These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

44 files changed, 2372 insertions, 8415 deletions

diff --git a/kernel/drivers/usb/host/Kconfig b/kernel/drivers/usb/host/Kconfig
index 197a6a3e6..3bb088701 100644
--- a/kernel/drivers/usb/host/Kconfig
+++ b/kernel/drivers/usb/host/Kconfig
@@ -32,7 +32,14 @@ config USB_XHCI_PCI
        default y
 
 config USB_XHCI_PLATFORM
-	tristate
+	tristate "Generic xHCI driver for a platform device"
+	---help---
+	  Adds an xHCI host driver for a generic platform device, which
+	  provides a memory space and an irq.
+	  It is also a prerequisite for platform specific drivers that
+	  implement some extra quirks.
+
+	  If unsure, say N.
 
 config USB_XHCI_MVEBU
 	tristate "xHCI support for Marvell Armada 375/38x"
@@ -137,7 +144,7 @@ config XPS_USB_HCD_XILINX
 		devices only.
 
 config USB_EHCI_FSL
-	bool "Support for Freescale PPC on-chip EHCI USB controller"
+	tristate "Support for Freescale PPC on-chip EHCI USB controller"
 	depends on FSL_SOC
 	select USB_EHCI_ROOT_HUB_TT
 	select USB_FSL_MPH_DR_OF if OF
@@ -295,7 +302,7 @@ config USB_OCTEON_EHCI
 	bool "Octeon on-chip EHCI support (DEPRECATED)"
 	depends on CAVIUM_OCTEON_SOC
 	default n
-	select USB_EHCI_BIG_ENDIAN_MMIO
+	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USB_EHCI_HCD_PLATFORM
 	help
 	  This option is deprecated now and the driver was removed, use
@@ -341,16 +348,6 @@ config USB_ISP1362_HCD
 	  To compile this driver as a module, choose M here: the
 	  module will be called isp1362-hcd.
 
-config USB_FUSBH200_HCD
-	tristate "FUSBH200 HCD support"
-	depends on USB
-	---help---
-	Faraday FUSBH200 is designed to meet USB2.0 EHCI specification
-	with minor modification.
-
-	To compile this driver as a module, choose M here: the
-	module will be called fusbh200-hcd.
-
 config USB_FOTG210_HCD
 	tristate "FOTG210 HCD support"
 	depends on USB
@@ -441,10 +438,10 @@ config USB_OHCI_HCD_PXA27X
 	  PXA27x/PXA3xx chips.
 
 config USB_OHCI_HCD_AT91
-        tristate "Support for Atmel on-chip OHCI USB controller"
-        depends on USB_OHCI_HCD && ARCH_AT91
-        default y
-        ---help---
+	tristate "Support for Atmel on-chip OHCI USB controller"
+	depends on USB_OHCI_HCD && ARCH_AT91 && OF
+	default y
+	---help---
           Enables support for the on-chip OHCI controller on
           Atmel chips.
 
@@ -568,7 +565,7 @@ config USB_OCTEON_OHCI
 	bool "Octeon on-chip OHCI support (DEPRECATED)"
 	depends on CAVIUM_OCTEON_SOC
 	default USB_OCTEON_EHCI
-	select USB_OHCI_BIG_ENDIAN_MMIO
+	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USB_OHCI_LITTLE_ENDIAN
 	select USB_OHCI_HCD_PLATFORM
 	help
diff --git a/kernel/drivers/usb/host/Makefile b/kernel/drivers/usb/host/Makefile
index 65b0b6a58..e7558abc9 100644
--- a/kernel/drivers/usb/host/Makefile
+++ b/kernel/drivers/usb/host/Makefile
@@ -24,10 +24,9 @@ endif
 
 obj-$(CONFIG_USB_WHCI_HCD)	+= whci/
 
-obj-$(CONFIG_PCI)		+= pci-quirks.o
-
-obj-$(CONFIG_USB_XHCI_PCI)	+= xhci-pci.o
-obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
+ifneq ($(CONFIG_USB), )
+	obj-$(CONFIG_PCI)	+= pci-quirks.o
+endif
 
 obj-$(CONFIG_USB_EHCI_HCD)	+= ehci-hcd.o
 obj-$(CONFIG_USB_EHCI_PCI)	+= ehci-pci.o
@@ -63,6 +62,8 @@ obj-$(CONFIG_USB_OHCI_HCD_PXA27X)	+= ohci-pxa27x.o
 obj-$(CONFIG_USB_UHCI_HCD)	+= uhci-hcd.o
 obj-$(CONFIG_USB_FHCI_HCD)	+= fhci.o
 obj-$(CONFIG_USB_XHCI_HCD)	+= xhci-hcd.o
+obj-$(CONFIG_USB_XHCI_PCI)	+= xhci-pci.o
+obj-$(CONFIG_USB_XHCI_PLATFORM) += xhci-plat-hcd.o
 obj-$(CONFIG_USB_SL811_HCD)	+= sl811-hcd.o
 obj-$(CONFIG_USB_SL811_CS)	+= sl811_cs.o
 obj-$(CONFIG_USB_U132_HCD)	+= u132-hcd.o
@@ -70,8 +71,8 @@ obj-$(CONFIG_USB_R8A66597_HCD)	+= r8a66597-hcd.o
 obj-$(CONFIG_USB_HWA_HCD)	+= hwa-hc.o
 obj-$(CONFIG_USB_IMX21_HCD)	+= imx21-hcd.o
 obj-$(CONFIG_USB_FSL_MPH_DR_OF)	+= fsl-mph-dr-of.o
+obj-$(CONFIG_USB_EHCI_FSL)	+= ehci-fsl.o
 obj-$(CONFIG_USB_HCD_BCMA)	+= bcma-hcd.o
 obj-$(CONFIG_USB_HCD_SSB)	+= ssb-hcd.o
-obj-$(CONFIG_USB_FUSBH200_HCD)	+= fusbh200-hcd.o
 obj-$(CONFIG_USB_FOTG210_HCD)	+= fotg210-hcd.o
 obj-$(CONFIG_USB_MAX3421_HCD)	+= max3421-hcd.o
diff --git a/kernel/drivers/usb/host/bcma-hcd.c b/kernel/drivers/usb/host/bcma-hcd.c
index 526cfab41..5398e3d42 100644
--- a/kernel/drivers/usb/host/bcma-hcd.c
+++ b/kernel/drivers/usb/host/bcma-hcd.c
@@ -2,7 +2,8 @@
  * Broadcom specific Advanced Microcontroller Bus
  * Broadcom USB-core driver (BCMA bus glue)
  *
- * Copyright 2011-2012 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2011-2015 Hauke Mehrtens <hauke@hauke-m.de>
+ * Copyright 2015 Felix Fietkau <nbd@openwrt.org>
  *
  * Based on ssb-ohci driver
  * Copyright 2007 Michael Buesch <m@bues.ch>
@@ -23,6 +24,8 @@
 #include <linux/platform_device.h>
 #include <linux/module.h>
 #include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
 #include <linux/usb/ehci_pdriver.h>
 #include <linux/usb/ohci_pdriver.h>
 
@@ -88,7 +91,7 @@ static void bcma_hcd_4716wa(struct bcma_device *dev)
 }
 
 /* based on arch/mips/brcm-boards/bcm947xx/pcibios.c */
-static void bcma_hcd_init_chip(struct bcma_device *dev)
+static void bcma_hcd_init_chip_mips(struct bcma_device *dev)
 {
 	u32 tmp;
 
@@ -159,6 +162,87 @@ static void bcma_hcd_init_chip(struct bcma_device *dev)
 	}
 }
 
+static void bcma_hcd_init_chip_arm_phy(struct bcma_device *dev)
+{
+	struct bcma_device *arm_core;
+	void __iomem *dmu;
+
+	arm_core = bcma_find_core(dev->bus, BCMA_CORE_ARMCA9);
+	if (!arm_core) {
+		dev_err(&dev->dev, "can not find ARM Cortex A9 ihost core\n");
+		return;
+	}
+
+	dmu = ioremap_nocache(arm_core->addr_s[0], 0x1000);
+	if (!dmu) {
+		dev_err(&dev->dev, "can not map ARM Cortex A9 ihost core\n");
+		return;
+	}
+
+	/* Unlock DMU PLL settings */
+	iowrite32(0x0000ea68, dmu + 0x180);
+
+	/* Write USB 2.0 PLL control setting */
+	iowrite32(0x00dd10c3, dmu + 0x164);
+
+	/* Lock DMU PLL settings */
+	iowrite32(0x00000000, dmu + 0x180);
+
+	iounmap(dmu);
+}
+
+static void bcma_hcd_init_chip_arm_hc(struct bcma_device *dev)
+{
+	u32 val;
+
+	/*
+	 * Delay after PHY initialized to ensure HC is ready to be configured
+	 */
+	usleep_range(1000, 2000);
+
+	/* Set packet buffer OUT threshold */
+	val = bcma_read32(dev, 0x94);
+	val &= 0xffff;
+	val |= 0x80 << 16;
+	bcma_write32(dev, 0x94, val);
+
+	/* Enable break memory transfer */
+	val = bcma_read32(dev, 0x9c);
+	val |= 1;
+	bcma_write32(dev, 0x9c, val);
+}
+
+static void bcma_hcd_init_chip_arm(struct bcma_device *dev)
+{
+	bcma_core_enable(dev, 0);
+
+	if (dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM4707 ||
+	    dev->bus->chipinfo.id == BCMA_CHIP_ID_BCM53018) {
+		if (dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4707 ||
+		    dev->bus->chipinfo.pkg == BCMA_PKG_ID_BCM4708)
+			bcma_hcd_init_chip_arm_phy(dev);
+
+		bcma_hcd_init_chip_arm_hc(dev);
+	}
+}
+
+static void bcma_hci_platform_power_gpio(struct bcma_device *dev, bool val)
+{
+	int gpio;
+
+	gpio = of_get_named_gpio(dev->dev.of_node, "vcc-gpio", 0);
+	if (!gpio_is_valid(gpio))
+		return;
+
+	if (val) {
+		gpio_request(gpio, "bcma-hcd-gpio");
+		gpio_set_value(gpio, 1);
+	} else {
+		gpio_set_value(gpio, 0);
+		gpio_free(gpio);
+	}
+}
+
 static const struct usb_ehci_pdata ehci_pdata = {
 };
 
@@ -169,7 +253,7 @@ static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, boo
 {
 	struct platform_device *hci_dev;
 	struct resource hci_res[2];
-	int ret = -ENOMEM;
+	int ret;
 
 	memset(hci_res, 0, sizeof(hci_res));
 
@@ -183,7 +267,7 @@ static struct platform_device *bcma_hcd_create_pdev(struct bcma_device *dev, boo
 	hci_dev = platform_device_alloc(ohci ? "ohci-platform" :
 					"ehci-platform" , 0);
 	if (!hci_dev)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	hci_dev->dev.parent = &dev->dev;
 	hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
@@ -214,39 +298,45 @@ err_alloc:
 static int bcma_hcd_probe(struct bcma_device *dev)
 {
 	int err;
-	u16 chipid_top;
 	u32 ohci_addr;
 	struct bcma_hcd_device *usb_dev;
 	struct bcma_chipinfo *chipinfo;
 
 	chipinfo = &dev->bus->chipinfo;
-	/* USBcores are only connected on embedded devices. */
-	chipid_top = (chipinfo->id & 0xFF00);
-	if (chipid_top != 0x4700 && chipid_top != 0x5300)
-		return -ENODEV;
 
 	/* TODO: Probably need checks here; is the core connected? */
 
 	if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
 		return -EOPNOTSUPP;
 
-	usb_dev = kzalloc(sizeof(struct bcma_hcd_device), GFP_KERNEL);
+	usb_dev = devm_kzalloc(&dev->dev, sizeof(struct bcma_hcd_device),
+			       GFP_KERNEL);
 	if (!usb_dev)
 		return -ENOMEM;
 
-	bcma_hcd_init_chip(dev);
+	bcma_hci_platform_power_gpio(dev, true);
+
+	switch (dev->id.id) {
+	case BCMA_CORE_NS_USB20:
+		bcma_hcd_init_chip_arm(dev);
+		break;
+	case BCMA_CORE_USB20_HOST:
+		bcma_hcd_init_chip_mips(dev);
+		break;
+	default:
+		return -ENODEV;
+	}
 
 	/* In AI chips EHCI is addrspace 0, OHCI is 1 */
 	ohci_addr = dev->addr_s[0];
-	if ((chipinfo->id == 0x5357 || chipinfo->id == 0x4749)
+	if ((chipinfo->id == BCMA_CHIP_ID_BCM5357 ||
+	     chipinfo->id == BCMA_CHIP_ID_BCM4749)
 	    && chipinfo->rev == 0)
 		ohci_addr = 0x18009000;
 
 	usb_dev->ohci_dev = bcma_hcd_create_pdev(dev, true, ohci_addr);
-	if (IS_ERR(usb_dev->ohci_dev)) {
-		err = PTR_ERR(usb_dev->ohci_dev);
-		goto err_free_usb_dev;
-	}
+	if (IS_ERR(usb_dev->ohci_dev))
+		return PTR_ERR(usb_dev->ohci_dev);
 
 	usb_dev->ehci_dev = bcma_hcd_create_pdev(dev, false, dev->addr);
 	if (IS_ERR(usb_dev->ehci_dev)) {
@@ -259,8 +349,6 @@ static int bcma_hcd_probe(struct bcma_device *dev)
 
 err_unregister_ohci_dev:
 	platform_device_unregister(usb_dev->ohci_dev);
-err_free_usb_dev:
-	kfree(usb_dev);
 	return err;
 }
 
@@ -280,6 +368,7 @@ static void bcma_hcd_remove(struct bcma_device *dev)
 
 static void bcma_hcd_shutdown(struct bcma_device *dev)
 {
+	bcma_hci_platform_power_gpio(dev, false);
 	bcma_core_disable(dev, 0);
 }
 
@@ -287,6 +376,7 @@ static void bcma_hcd_shutdown(struct bcma_device *dev)
 
 static int bcma_hcd_suspend(struct bcma_device *dev)
 {
+	bcma_hci_platform_power_gpio(dev, false);
 	bcma_core_disable(dev, 0);
 
 	return 0;
@@ -294,6 +384,7 @@ static int bcma_hcd_suspend(struct bcma_device *dev)
 
 static int bcma_hcd_resume(struct bcma_device *dev)
 {
+	bcma_hci_platform_power_gpio(dev, true);
 	bcma_core_enable(dev, 0);
 
 	return 0;
@@ -306,6 +397,7 @@ static int bcma_hcd_resume(struct bcma_device *dev)
 
 static const struct bcma_device_id bcma_hcd_table[] = {
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_USB20_HOST, BCMA_ANY_REV, BCMA_ANY_CLASS),
+	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_NS_USB20, BCMA_ANY_REV, BCMA_ANY_CLASS),
 	{},
 };
 MODULE_DEVICE_TABLE(bcma, bcma_hcd_table);
diff --git a/kernel/drivers/usb/host/ehci-dbg.c b/kernel/drivers/usb/host/ehci-dbg.c
index 524cbf26d..b26b96e25 100644
--- a/kernel/drivers/usb/host/ehci-dbg.c
+++ b/kernel/drivers/usb/host/ehci-dbg.c
@@ -628,7 +628,8 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 	unsigned		i;
 	__hc32			tag;
 
-	if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
+	seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC);
+	if (!seen)
 		return 0;
 	seen_count = 0;
 
diff --git a/kernel/drivers/usb/host/ehci-fsl.c b/kernel/drivers/usb/host/ehci-fsl.c
index ab4eee3df..3b6eb219d 100644
--- a/kernel/drivers/usb/host/ehci-fsl.c
+++ b/kernel/drivers/usb/host/ehci-fsl.c
@@ -1,6 +1,6 @@
 /*
  * Copyright 2005-2009 MontaVista Software, Inc.
- * Copyright 2008,2012      Freescale Semiconductor, Inc.
+ * Copyright 2008,2012,2015      Freescale Semiconductor, Inc.
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by the
@@ -24,29 +24,38 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/module.h>
 #include <linux/types.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/err.h>
+#include <linux/usb.h>
+#include <linux/usb/ehci_def.h>
+#include <linux/usb/hcd.h>
+#include <linux/usb/otg.h>
 #include <linux/platform_device.h>
 #include <linux/fsl_devices.h>
 
+#include "ehci.h"
 #include "ehci-fsl.h"
 
+#define DRIVER_DESC "Freescale EHCI Host controller driver"
+#define DRV_NAME "ehci-fsl"
+
+static struct hc_driver __read_mostly fsl_ehci_hc_driver;
+
 /* configure so an HC device and id are always provided */
 /* always called with process context; sleeping is OK */
 
-/**
- * usb_hcd_fsl_probe - initialize FSL-based HCDs
- * @drvier: Driver to be used for this HCD
+/*
+ * fsl_ehci_drv_probe - initialize FSL-based HCDs
  * @pdev: USB Host Controller being probed
  * Context: !in_interrupt()
  *
  * Allocates basic resources for this USB host controller.
  *
  */
-static int usb_hcd_fsl_probe(const struct hc_driver *driver,
-			     struct platform_device *pdev)
+static int fsl_ehci_drv_probe(struct platform_device *pdev)
 {
 	struct fsl_usb2_platform_data *pdata;
 	struct usb_hcd *hcd;
@@ -86,7 +95,8 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 	}
 	irq = res->start;
 
-	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
+	hcd = usb_create_hcd(&fsl_ehci_hc_driver, &pdev->dev,
+				dev_name(&pdev->dev));
 	if (!hcd) {
 		retval = -ENOMEM;
 		goto err1;
@@ -117,7 +127,18 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 
 	/* Enable USB controller, 83xx or 8536 */
 	if (pdata->have_sysif_regs && pdata->controller_ver < FSL_USB_VER_1_6)
-		setbits32(hcd->regs + FSL_SOC_USB_CTRL, 0x4);
+		clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
+				CONTROL_REGISTER_W1C_MASK, 0x4);
+
+	/*
+	 * Enable UTMI phy and program PTS field in UTMI mode before asserting
+	 * controller reset for USB Controller version 2.5
+	 */
+	if (pdata->has_fsl_erratum_a007792) {
+		clrsetbits_be32(hcd->regs + FSL_SOC_USB_CTRL,
+				CONTROL_REGISTER_W1C_MASK, CTRL_UTMI_PHY_EN);
+		writel(PORT_PTS_UTMI, hcd->regs + FSL_SOC_USB_PORTSC1);
+	}
 
 	/* Don't need to set host mode here. It will be done by tdi_reset() */
 
@@ -159,38 +180,6 @@ static int usb_hcd_fsl_probe(const struct hc_driver *driver,
 	return retval;
 }
 
-/* may be called without controller electrically present */
-/* may be called with controller, bus, and devices active */
-
-/**
- * usb_hcd_fsl_remove - shutdown processing for FSL-based HCDs
- * @dev: USB Host Controller being removed
- * Context: !in_interrupt()
- *
- * Reverses the effect of usb_hcd_fsl_probe().
- *
- */
-static void usb_hcd_fsl_remove(struct usb_hcd *hcd,
-			       struct platform_device *pdev)
-{
-	struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
-
-	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
-		otg_set_host(hcd->usb_phy->otg, NULL);
-		usb_put_phy(hcd->usb_phy);
-	}
-
-	usb_remove_hcd(hcd);
-
-	/*
-	 * do platform specific un-initialization:
-	 * release iomux pins, disable clock, etc.
-	 */
-	if (pdata->exit)
-		pdata->exit(pdev);
-	usb_put_hcd(hcd);
-}
-
 static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
 			       enum fsl_usb2_phy_modes phy_mode,
 			       unsigned int port_offset)
@@ -213,9 +202,11 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
 	case FSL_USB2_PHY_ULPI:
 		if (pdata->have_sysif_regs && pdata->controller_ver) {
 			/* controller version 1.6 or above */
-			clrbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
-			setbits32(non_ehci + FSL_SOC_USB_CTRL,
-				ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
+			clrbits32(non_ehci + FSL_SOC_USB_CTRL,
+				  CONTROL_REGISTER_W1C_MASK | UTMI_PHY_EN);
+			clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+					CONTROL_REGISTER_W1C_MASK,
+					ULPI_PHY_CLK_SEL | USB_CTRL_USB_EN);
 		}
 		portsc |= PORT_PTS_ULPI;
 		break;
@@ -226,30 +217,33 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
 		portsc |= PORT_PTS_PTW;
 		/* fall through */
 	case FSL_USB2_PHY_UTMI:
+	case FSL_USB2_PHY_UTMI_DUAL:
 		if (pdata->have_sysif_regs && pdata->controller_ver) {
 			/* controller version 1.6 or above */
-			setbits32(non_ehci + FSL_SOC_USB_CTRL, UTMI_PHY_EN);
+			clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+					CONTROL_REGISTER_W1C_MASK, UTMI_PHY_EN);
 			mdelay(FSL_UTMI_PHY_DLY);  /* Delay for UTMI PHY CLK to
 						become stable - 10ms*/
 		}
 		/* enable UTMI PHY */
 		if (pdata->have_sysif_regs)
-			setbits32(non_ehci + FSL_SOC_USB_CTRL,
-				  CTRL_UTMI_PHY_EN);
+			clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+					CONTROL_REGISTER_W1C_MASK,
+					CTRL_UTMI_PHY_EN);
 		portsc |= PORT_PTS_UTMI;
 		break;
 	case FSL_USB2_PHY_NONE:
 		break;
 	}
 
-	if (pdata->have_sysif_regs &&
-	    pdata->controller_ver > FSL_USB_VER_1_6 &&
-	    (phy_mode == FSL_USB2_PHY_ULPI)) {
-		/* check PHY_CLK_VALID to get phy clk valid */
-		if (!(spin_event_timeout(in_be32(non_ehci + FSL_SOC_USB_CTRL) &
-				PHY_CLK_VALID, FSL_USB_PHY_CLK_TIMEOUT, 0) ||
-				in_be32(non_ehci + FSL_SOC_USB_PRICTRL))) {
-			dev_warn(hcd->self.controller, "USB PHY clock invalid\n");
+	/*
+	 * check PHY_CLK_VALID to determine phy clock presence before writing
+	 * to portsc
+	 */
+	if (pdata->check_phy_clk_valid) {
+		if (!(in_be32(non_ehci + FSL_SOC_USB_CTRL) & PHY_CLK_VALID)) {
+			dev_warn(hcd->self.controller,
+				 "USB PHY clock invalid\n");
 			return -EINVAL;
 		}
 	}
@@ -257,7 +251,8 @@ static int ehci_fsl_setup_phy(struct usb_hcd *hcd,
 	ehci_writel(ehci, portsc, &ehci->regs->port_status[port_offset]);
 
 	if (phy_mode != FSL_USB2_PHY_ULPI && pdata->have_sysif_regs)
-		setbits32(non_ehci + FSL_SOC_USB_CTRL, USB_CTRL_USB_EN);
+		clrsetbits_be32(non_ehci + FSL_SOC_USB_CTRL,
+				CONTROL_REGISTER_W1C_MASK, USB_CTRL_USB_EN);
 
 	return 0;
 }
@@ -283,6 +278,10 @@ static int ehci_fsl_usb_setup(struct ehci_hcd *ehci)
 		out_be32(non_ehci + FSL_SOC_USB_SNOOP2, 0x80000000 | SNOOP_SIZE_2GB);
 	}
 
+	/* Deal with USB erratum A-005275 */
+	if (pdata->has_fsl_erratum_a005275 == 1)
+		ehci->has_fsl_hs_errata = 1;
+
 	if ((pdata->operating_mode == FSL_USB2_DR_HOST) ||
 			(pdata->operating_mode == FSL_USB2_DR_OTG))
 		if (ehci_fsl_setup_phy(hcd, pdata->phy_mode, 0))
@@ -636,79 +635,77 @@ static int ehci_start_port_reset(struct usb_hcd *hcd, unsigned port)
 #define ehci_start_port_reset	NULL
 #endif /* CONFIG_USB_OTG */
 
+static struct ehci_driver_overrides ehci_fsl_overrides __initdata = {
+	.extra_priv_size = sizeof(struct ehci_fsl),
+	.reset = ehci_fsl_setup,
+};
 
-static const struct hc_driver ehci_fsl_hc_driver = {
-	.description = hcd_name,
-	.product_desc = "Freescale On-Chip EHCI Host Controller",
-	.hcd_priv_size = sizeof(struct ehci_fsl),
+/**
+ * fsl_ehci_drv_remove - shutdown processing for FSL-based HCDs
+ * @dev: USB Host Controller being removed
+ * Context: !in_interrupt()
+ *
+ * Reverses the effect of usb_hcd_fsl_probe().
+ *
+ */
 
-	/*
-	 * generic hardware linkage
-	 */
-	.irq = ehci_irq,
-	.flags = HCD_USB2 | HCD_MEMORY | HCD_BH,
+static int fsl_ehci_drv_remove(struct platform_device *pdev)
+{
+	struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev);
+	struct usb_hcd *hcd = platform_get_drvdata(pdev);
 
-	/*
-	 * basic lifecycle operations
-	 */
-	.reset = ehci_fsl_setup,
-	.start = ehci_run,
-	.stop = ehci_stop,
-	.shutdown = ehci_shutdown,
+	if (!IS_ERR_OR_NULL(hcd->usb_phy)) {
+		otg_set_host(hcd->usb_phy->otg, NULL);
+		usb_put_phy(hcd->usb_phy);
+	}
 
-	/*
-	 * managing i/o requests and associated device resources
-	 */
-	.urb_enqueue = ehci_urb_enqueue,
-	.urb_dequeue = ehci_urb_dequeue,
-	.endpoint_disable = ehci_endpoint_disable,
-	.endpoint_reset = ehci_endpoint_reset,
+	usb_remove_hcd(hcd);
 
 	/*
-	 * scheduling support
+	 * do platform specific un-initialization:
+	 * release iomux pins, disable clock, etc.
 	 */
-	.get_frame_number = ehci_get_frame,
+	if (pdata->exit)
+		pdata->exit(pdev);
+	usb_put_hcd(hcd);
 
-	/*
-	 * root hub support
-	 */
-	.hub_status_data = ehci_hub_status_data,
-	.hub_control = ehci_hub_control,
-	.bus_suspend = ehci_bus_suspend,
-	.bus_resume = ehci_bus_resume,
-	.start_port_reset = ehci_start_port_reset,
-	.relinquish_port = ehci_relinquish_port,
-	.port_handed_over = ehci_port_handed_over,
-
-	.clear_tt_buffer_complete = ehci_clear_tt_buffer_complete,
+	return 0;
+}
+
+static struct platform_driver ehci_fsl_driver = {
+	.probe = fsl_ehci_drv_probe,
+	.remove = fsl_ehci_drv_remove,
+	.shutdown = usb_hcd_platform_shutdown,
+	.driver = {
+		.name = "fsl-ehci",
+		.pm = EHCI_FSL_PM_OPS,
+	},
 };
 
-static int ehci_fsl_drv_probe(struct platform_device *pdev)
+static int __init ehci_fsl_init(void)
 {
 	if (usb_disabled())
 		return -ENODEV;
 
-	/* FIXME we only want one one probe() not two */
-	return usb_hcd_fsl_probe(&ehci_fsl_hc_driver, pdev);
-}
+	pr_info(DRV_NAME ": " DRIVER_DESC "\n");
 
-static int ehci_fsl_drv_remove(struct platform_device *pdev)
-{
-	struct usb_hcd *hcd = platform_get_drvdata(pdev);
+	ehci_init_driver(&fsl_ehci_hc_driver, &ehci_fsl_overrides);
 
-	/* FIXME we only want one one remove() not two */
-	usb_hcd_fsl_remove(hcd, pdev);
-	return 0;
+	fsl_ehci_hc_driver.product_desc =
+			"Freescale On-Chip EHCI Host Controller";
+	fsl_ehci_hc_driver.start_port_reset = ehci_start_port_reset;
+
+
+	return platform_driver_register(&ehci_fsl_driver);
 }
+module_init(ehci_fsl_init);
 
-MODULE_ALIAS("platform:fsl-ehci");
+static void __exit ehci_fsl_cleanup(void)
+{
+	platform_driver_unregister(&ehci_fsl_driver);
+}
+module_exit(ehci_fsl_cleanup);
 
-static struct platform_driver ehci_fsl_driver = {
-	.probe = ehci_fsl_drv_probe,
-	.remove = ehci_fsl_drv_remove,
-	.shutdown = usb_hcd_platform_shutdown,
-	.driver = {
-		.name = "fsl-ehci",
-		.pm = EHCI_FSL_PM_OPS,
-	},
-};
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" DRV_NAME);
diff --git a/kernel/drivers/usb/host/ehci-fsl.h b/kernel/drivers/usb/host/ehci-fsl.h
index dbd292e9f..1a8a60a57 100644
--- a/kernel/drivers/usb/host/ehci-fsl.h
+++ b/kernel/drivers/usb/host/ehci-fsl.h
@@ -52,6 +52,7 @@
 #define SNOOP_SIZE_2GB		0x1e
 
 /* control Register Bit Masks */
+#define CONTROL_REGISTER_W1C_MASK       0x00020000  /* W1C: PHY_CLK_VALID */
 #define ULPI_INT_EN             (1<<0)
 #define WU_INT_EN               (1<<1)
 #define USB_CTRL_USB_EN         (1<<2)
diff --git a/kernel/drivers/usb/host/ehci-hcd.c b/kernel/drivers/usb/host/ehci-hcd.c
index f4d88dfb2..48c92bf78 100644
--- a/kernel/drivers/usb/host/ehci-hcd.c
+++ b/kernel/drivers/usb/host/ehci-hcd.c
@@ -239,7 +239,7 @@ static void tdi_reset (struct ehci_hcd *ehci)
  * Reset a non-running (STS_HALT == 1) controller.
  * Must be called with interrupts enabled and the lock not held.
  */
-static int ehci_reset (struct ehci_hcd *ehci)
+int ehci_reset(struct ehci_hcd *ehci)
 {
 	int	retval;
 	u32	command = ehci_readl(ehci, &ehci->regs->command);
@@ -275,6 +275,7 @@ static int ehci_reset (struct ehci_hcd *ehci)
 			ehci->resuming_ports = 0;
 	return retval;
 }
+EXPORT_SYMBOL_GPL(ehci_reset);
 
 /*
  * Idle the controller (turn off the schedules).
@@ -588,7 +589,7 @@ static int ehci_run (struct usb_hcd *hcd)
 	 * streaming mappings for I/O buffers, like pci_map_single(),
 	 * can return segments above 4GB, if the device allows.
 	 *
-	 * NOTE:  the dma mask is visible through dma_supported(), so
+	 * NOTE:  the dma mask is visible through dev->dma_mask, so
 	 * drivers can pass this info along ... like NETIF_F_HIGHDMA,
 	 * Scsi_Host.highmem_io, and so forth.  It's readonly to all
 	 * host side drivers though.
@@ -1250,11 +1251,6 @@ MODULE_DESCRIPTION(DRIVER_DESC);
 MODULE_AUTHOR (DRIVER_AUTHOR);
 MODULE_LICENSE ("GPL");
 
-#ifdef CONFIG_USB_EHCI_FSL
-#include "ehci-fsl.c"
-#define	PLATFORM_DRIVER		ehci_fsl_driver
-#endif
-
 #ifdef CONFIG_USB_EHCI_SH
 #include "ehci-sh.c"
 #define PLATFORM_DRIVER		ehci_hcd_sh_driver
diff --git a/kernel/drivers/usb/host/ehci-hub.c b/kernel/drivers/usb/host/ehci-hub.c
index 69208447d..086a7115d 100644
--- a/kernel/drivers/usb/host/ehci-hub.c
+++ b/kernel/drivers/usb/host/ehci-hub.c
@@ -155,7 +155,7 @@ static int ehci_port_change(struct ehci_hcd *ehci)
 	return 0;
 }
 
-static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
+void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
 		bool suspending, bool do_wakeup)
 {
 	int		port;
@@ -220,6 +220,7 @@ static void ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
 
 	spin_unlock_irq(&ehci->lock);
 }
+EXPORT_SYMBOL_GPL(ehci_adjust_port_wakeup_flags);
 
 static int ehci_bus_suspend (struct usb_hcd *hcd)
 {
@@ -1220,6 +1221,13 @@ int ehci_hub_control(
 				 */
 				ehci->reset_done [wIndex] = jiffies
 						+ msecs_to_jiffies (50);
+
+				/*
+				 * Force full-speed connect for FSL high-speed
+				 * erratum; disable HS Chirp by setting PFSC bit
+				 */
+				if (ehci_has_fsl_hs_errata(ehci))
+					temp |= (1 << PORTSC_FSL_PFSC);
 			}
 			ehci_writel(ehci, temp, status_reg);
 			break;
diff --git a/kernel/drivers/usb/host/ehci-msm.c b/kernel/drivers/usb/host/ehci-msm.c
index 275c92e53..c4f84c81d 100644
--- a/kernel/drivers/usb/host/ehci-msm.c
+++ b/kernel/drivers/usb/host/ehci-msm.c
@@ -80,12 +80,12 @@ static int ehci_msm_probe(struct platform_device *pdev)
 		return  -ENOMEM;
 	}
 
-	hcd->irq = platform_get_irq(pdev, 0);
-	if (hcd->irq < 0) {
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0) {
 		dev_err(&pdev->dev, "Unable to get IRQ resource\n");
-		ret = hcd->irq;
 		goto put_hcd;
 	}
+	hcd->irq = ret;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	if (!res) {
diff --git a/kernel/drivers/usb/host/ehci-orion.c b/kernel/drivers/usb/host/ehci-orion.c
index bfcbb9aa8..ee8d5faa0 100644
--- a/kernel/drivers/usb/host/ehci-orion.c
+++ b/kernel/drivers/usb/host/ehci-orion.c
@@ -224,7 +224,8 @@ static int ehci_orion_drv_probe(struct platform_device *pdev)
 	priv->phy = devm_phy_optional_get(&pdev->dev, "usb");
 	if (IS_ERR(priv->phy)) {
 		err = PTR_ERR(priv->phy);
-		goto err_phy_get;
+		if (err != -ENOSYS)
+			goto err_phy_get;
 	} else {
 		err = phy_init(priv->phy);
 		if (err)
diff --git a/kernel/drivers/usb/host/ehci-platform.c b/kernel/drivers/usb/host/ehci-platform.c
index d8a75a51d..bd7082f29 100644
--- a/kernel/drivers/usb/host/ehci-platform.c
+++ b/kernel/drivers/usb/host/ehci-platform.c
@@ -19,6 +19,7 @@
  *
  * Licensed under the GNU/GPL. See COPYING for details.
  */
+#include <linux/acpi.h>
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/err.h>
@@ -45,6 +46,7 @@ struct ehci_platform_priv {
 	struct reset_control *rst;
 	struct phy **phys;
 	int num_phys;
+	bool reset_on_resume;
 };
 
 static const char hcd_name[] = "ehci-platform";
@@ -56,7 +58,6 @@ static int ehci_platform_reset(struct usb_hcd *hcd)
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
 	int retval;
 
-	hcd->has_tt = pdata->has_tt;
 	ehci->has_synopsys_hc_bug = pdata->has_synopsys_hc_bug;
 
 	if (pdata->pre_setup) {
@@ -88,15 +89,13 @@ static int ehci_platform_power_on(struct platform_device *dev)
 	}
 
 	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		if (priv->phys[phy_num]) {
-			ret = phy_init(priv->phys[phy_num]);
-			if (ret)
-				goto err_exit_phy;
-			ret = phy_power_on(priv->phys[phy_num]);
-			if (ret) {
-				phy_exit(priv->phys[phy_num]);
-				goto err_exit_phy;
-			}
+		ret = phy_init(priv->phys[phy_num]);
+		if (ret)
+			goto err_exit_phy;
+		ret = phy_power_on(priv->phys[phy_num]);
+		if (ret) {
+			phy_exit(priv->phys[phy_num]);
+			goto err_exit_phy;
 		}
 	}
 
@@ -104,10 +103,8 @@ static int ehci_platform_power_on(struct platform_device *dev)
 
 err_exit_phy:
 	while (--phy_num >= 0) {
-		if (priv->phys[phy_num]) {
-			phy_power_off(priv->phys[phy_num]);
-			phy_exit(priv->phys[phy_num]);
-		}
+		phy_power_off(priv->phys[phy_num]);
+		phy_exit(priv->phys[phy_num]);
 	}
 err_disable_clks:
 	while (--clk >= 0)
@@ -123,10 +120,8 @@ static void ehci_platform_power_off(struct platform_device *dev)
 	int clk, phy_num;
 
 	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		if (priv->phys[phy_num]) {
-			phy_power_off(priv->phys[phy_num]);
-			phy_exit(priv->phys[phy_num]);
-		}
+		phy_power_off(priv->phys[phy_num]);
+		phy_exit(priv->phys[phy_num]);
 	}
 
 	for (clk = EHCI_MAX_CLKS - 1; clk >= 0; clk--)
@@ -154,7 +149,6 @@ static int ehci_platform_probe(struct platform_device *dev)
 	struct usb_ehci_pdata *pdata = dev_get_platdata(&dev->dev);
 	struct ehci_platform_priv *priv;
 	struct ehci_hcd *ehci;
-	const char *phy_name;
 	int err, irq, phy_num, clk = 0;
 
 	if (usb_disabled())
@@ -169,8 +163,10 @@ static int ehci_platform_probe(struct platform_device *dev)
 
 	err = dma_coerce_mask_and_coherent(&dev->dev,
 		pdata->dma_mask_64 ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32));
-	if (err)
+	if (err) {
+		dev_err(&dev->dev, "Error: DMA mask configuration failed\n");
 		return err;
+	}
 
 	irq = platform_get_irq(dev, 0);
 	if (irq < 0) {
@@ -200,40 +196,30 @@ static int ehci_platform_probe(struct platform_device *dev)
 
 		if (of_property_read_bool(dev->dev.of_node,
 					  "needs-reset-on-resume"))
-			pdata->reset_on_resume = 1;
+			priv->reset_on_resume = true;
+
+		if (of_property_read_bool(dev->dev.of_node,
+					  "has-transaction-translator"))
+			hcd->has_tt = 1;
 
 		priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
 				"phys", "#phy-cells");
-		priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
 
-		priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
-				sizeof(struct phy *), GFP_KERNEL);
-		if (!priv->phys)
-			return -ENOMEM;
+		if (priv->num_phys > 0) {
+			priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
+					    sizeof(struct phy *), GFP_KERNEL);
+			if (!priv->phys)
+				return -ENOMEM;
+		} else
+			priv->num_phys = 0;
 
 		for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-				err = of_property_read_string_index(
-						dev->dev.of_node,
-						"phy-names", phy_num,
-						&phy_name);
-
-				if (err < 0) {
-					if (priv->num_phys > 1) {
-						dev_err(&dev->dev, "phy-names not provided");
-						goto err_put_hcd;
-					} else
-						phy_name = "usb";
-				}
-
-				priv->phys[phy_num] = devm_phy_get(&dev->dev,
-						phy_name);
-				if (IS_ERR(priv->phys[phy_num])) {
-					err = PTR_ERR(priv->phys[phy_num]);
-					if ((priv->num_phys > 1) ||
-					    (err == -EPROBE_DEFER))
-						goto err_put_hcd;
-					priv->phys[phy_num] = NULL;
-				}
+			priv->phys[phy_num] = devm_of_phy_get_by_index(
+					&dev->dev, dev->dev.of_node, phy_num);
+			if (IS_ERR(priv->phys[phy_num])) {
+				err = PTR_ERR(priv->phys[phy_num]);
+					goto err_put_hcd;
+			}
 		}
 
 		for (clk = 0; clk < EHCI_MAX_CLKS; clk++) {
@@ -264,6 +250,10 @@ static int ehci_platform_probe(struct platform_device *dev)
 		ehci->big_endian_desc = 1;
 	if (pdata->big_endian_mmio)
 		ehci->big_endian_mmio = 1;
+	if (pdata->has_tt)
+		hcd->has_tt = 1;
+	if (pdata->reset_on_resume)
+		priv->reset_on_resume = true;
 
 #ifndef CONFIG_USB_EHCI_BIG_ENDIAN_MMIO
 	if (ehci->big_endian_mmio) {
@@ -376,6 +366,7 @@ static int ehci_platform_resume(struct device *dev)
 	struct usb_ehci_pdata *pdata = dev_get_platdata(dev);
 	struct platform_device *pdev =
 		container_of(dev, struct platform_device, dev);
+	struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd);
 
 	if (pdata->power_on) {
 		int err = pdata->power_on(pdev);
@@ -383,7 +374,7 @@ static int ehci_platform_resume(struct device *dev)
 			return err;
 	}
 
-	ehci_resume(hcd, pdata->reset_on_resume);
+	ehci_resume(hcd, priv->reset_on_resume);
 	return 0;
 }
 #endif /* CONFIG_PM_SLEEP */
@@ -397,6 +388,12 @@ static const struct of_device_id vt8500_ehci_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, vt8500_ehci_ids);
 
+static const struct acpi_device_id ehci_acpi_match[] = {
+	{ "PNP0D20", 0 }, /* EHCI controller without debug */
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, ehci_acpi_match);
+
 static const struct platform_device_id ehci_platform_table[] = {
 	{ "ehci-platform", 0 },
 	{ }
@@ -415,6 +412,7 @@ static struct platform_driver ehci_platform_driver = {
 		.name	= "ehci-platform",
 		.pm	= &ehci_platform_pm_ops,
 		.of_match_table = vt8500_ehci_ids,
+		.acpi_match_table = ACPI_PTR(ehci_acpi_match),
 	}
 };
 
diff --git a/kernel/drivers/usb/host/ehci-spear.c b/kernel/drivers/usb/host/ehci-spear.c
index 34e14746b..3c4e52539 100644
--- a/kernel/drivers/usb/host/ehci-spear.c
+++ b/kernel/drivers/usb/host/ehci-spear.c
@@ -149,6 +149,7 @@ static const struct of_device_id spear_ehci_id_table[] = {
 	{ .compatible = "st,spear600-ehci", },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, spear_ehci_id_table);
 
 static struct platform_driver spear_ehci_hcd_driver = {
 	.probe		= spear_ehci_hcd_drv_probe,
diff --git a/kernel/drivers/usb/host/ehci-st.c b/kernel/drivers/usb/host/ehci-st.c
index 7e4bd39cf..b7c5cfa37 100644
--- a/kernel/drivers/usb/host/ehci-st.c
+++ b/kernel/drivers/usb/host/ehci-st.c
@@ -54,7 +54,6 @@ static int st_ehci_platform_reset(struct usb_hcd *hcd)
 	struct platform_device *pdev = to_platform_device(hcd->self.controller);
 	struct usb_ehci_pdata *pdata = dev_get_platdata(&pdev->dev);
 	struct ehci_hcd *ehci = hcd_to_ehci(hcd);
-	int retval;
 	u32 threshold;
 
 	/* Set EHCI packet buffer IN/OUT threshold to 128 bytes */
@@ -62,11 +61,7 @@ static int st_ehci_platform_reset(struct usb_hcd *hcd)
 	writel(threshold, hcd->regs + AHB2STBUS_INSREG01);
 
 	ehci->caps = hcd->regs + pdata->caps_offset;
-	retval = ehci_setup(hcd);
-	if (retval)
-		return retval;
-
-	return 0;
+	return ehci_setup(hcd);
 }
 
 static int st_ehci_platform_power_on(struct platform_device *dev)
diff --git a/kernel/drivers/usb/host/ehci-tegra.c b/kernel/drivers/usb/host/ehci-tegra.c
index ff9af29b4..4031b3720 100644
--- a/kernel/drivers/usb/host/ehci-tegra.c
+++ b/kernel/drivers/usb/host/ehci-tegra.c
@@ -304,6 +304,7 @@ struct dma_aligned_buffer {
 static void free_dma_aligned_buffer(struct urb *urb)
 {
 	struct dma_aligned_buffer *temp;
+	size_t length;
 
 	if (!(urb->transfer_flags & URB_ALIGNED_TEMP_BUFFER))
 		return;
@@ -311,9 +312,14 @@ static void free_dma_aligned_buffer(struct urb *urb)
 	temp = container_of(urb->transfer_buffer,
 		struct dma_aligned_buffer, data);
 
-	if (usb_urb_dir_in(urb))
-		memcpy(temp->old_xfer_buffer, temp->data,
-		       urb->transfer_buffer_length);
+	if (usb_urb_dir_in(urb)) {
+		if (usb_pipeisoc(urb->pipe))
+			length = urb->transfer_buffer_length;
+		else
+			length = urb->actual_length;
+
+		memcpy(temp->old_xfer_buffer, temp->data, length);
+	}
 	urb->transfer_buffer = temp->old_xfer_buffer;
 	kfree(temp->kmalloc_ptr);
 
diff --git a/kernel/drivers/usb/host/ehci.h b/kernel/drivers/usb/host/ehci.h
index 52ef0844a..46f62e41b 100644
--- a/kernel/drivers/usb/host/ehci.h
+++ b/kernel/drivers/usb/host/ehci.h
@@ -215,6 +215,7 @@ struct ehci_hcd {			/* one per controller */
 	/* SILICON QUIRKS */
 	unsigned		no_selective_suspend:1;
 	unsigned		has_fsl_port_bug:1; /* FreeScale */
+	unsigned		has_fsl_hs_errata:1;	/* Freescale HS quirk */
 	unsigned		big_endian_mmio:1;
 	unsigned		big_endian_desc:1;
 	unsigned		big_endian_capbase:1;
@@ -686,6 +687,17 @@ ehci_port_speed(struct ehci_hcd *ehci, unsigned int portsc)
 #define	ehci_has_fsl_portno_bug(e)		(0)
 #endif
 
+#define PORTSC_FSL_PFSC	24	/* Port Force Full-Speed Connect */
+
+#if defined(CONFIG_PPC_85xx)
+/* Some Freescale processors have an erratum (USB A-005275) in which
+ * incoming packets get corrupted in HS mode
+ */
+#define ehci_has_fsl_hs_errata(e)	((e)->has_fsl_hs_errata)
+#else
+#define ehci_has_fsl_hs_errata(e)	(0)
+#endif
+
 /*
  * While most USB host controllers implement their registers in
  * little-endian format, a minority (celleb companion chip) implement
@@ -868,10 +880,13 @@ extern void	ehci_init_driver(struct hc_driver *drv,
 extern int	ehci_setup(struct usb_hcd *hcd);
 extern int	ehci_handshake(struct ehci_hcd *ehci, void __iomem *ptr,
 				u32 mask, u32 done, int usec);
+extern int	ehci_reset(struct ehci_hcd *ehci);
 
 #ifdef CONFIG_PM
 extern int	ehci_suspend(struct usb_hcd *hcd, bool do_wakeup);
 extern int	ehci_resume(struct usb_hcd *hcd, bool force_reset);
+extern void	ehci_adjust_port_wakeup_flags(struct ehci_hcd *ehci,
+			bool suspending, bool do_wakeup);
 #endif	/* CONFIG_PM */
 
 extern int	ehci_hub_control(struct usb_hcd	*hcd, u16 typeReq, u16 wValue,
diff --git a/kernel/drivers/usb/host/fotg210-hcd.c b/kernel/drivers/usb/host/fotg210-hcd.c
index 000ed80ab..2341af4f3 100644
--- a/kernel/drivers/usb/host/fotg210-hcd.c
+++ b/kernel/drivers/usb/host/fotg210-hcd.c
@@ -1,5 +1,4 @@
-/*
- * Faraday FOTG210 EHCI-like driver
+/* Faraday FOTG210 EHCI-like driver
  *
  * Copyright (c) 2013 Faraday Technology Corporation
  *
@@ -50,32 +49,29 @@
 #include <asm/irq.h>
 #include <asm/unaligned.h>
 
-/*-------------------------------------------------------------------------*/
 #define DRIVER_AUTHOR "Yuan-Hsin Chen"
 #define DRIVER_DESC "FOTG210 Host Controller (EHCI) Driver"
-
-static const char	hcd_name[] = "fotg210_hcd";
+static const char hcd_name[] = "fotg210_hcd";
 
 #undef FOTG210_URB_TRACE
-
 #define FOTG210_STATS
 
 /* magic numbers that can affect system performance */
-#define	FOTG210_TUNE_CERR		3 /* 0-3 qtd retries; 0 == don't stop */
-#define	FOTG210_TUNE_RL_HS		4 /* nak throttle; see 4.9 */
-#define	FOTG210_TUNE_RL_TT		0
-#define	FOTG210_TUNE_MULT_HS	1	/* 1-3 transactions/uframe; 4.10.3 */
-#define	FOTG210_TUNE_MULT_TT	1
-/*
- * Some drivers think it's safe to schedule isochronous transfers more than
- * 256 ms into the future (partly as a result of an old bug in the scheduling
+#define FOTG210_TUNE_CERR	3 /* 0-3 qtd retries; 0 == don't stop */
+#define FOTG210_TUNE_RL_HS	4 /* nak throttle; see 4.9 */
+#define FOTG210_TUNE_RL_TT	0
+#define FOTG210_TUNE_MULT_HS	1 /* 1-3 transactions/uframe; 4.10.3 */
+#define FOTG210_TUNE_MULT_TT	1
+
+/* Some drivers think it's safe to schedule isochronous transfers more than 256
+ * ms into the future (partly as a result of an old bug in the scheduling
  * code).  In an attempt to avoid trouble, we will use a minimum scheduling
  * length of 512 frames instead of 256.
  */
-#define	FOTG210_TUNE_FLS		1 /* (medium) 512-frame schedule */
+#define FOTG210_TUNE_FLS 1 /* (medium) 512-frame schedule */
 
 /* Initial IRQ latency:  faster than hw default */
-static int log2_irq_thresh;		/* 0 to 6 */
+static int log2_irq_thresh; /* 0 to 6 */
 module_param(log2_irq_thresh, int, S_IRUGO);
 MODULE_PARM_DESC(log2_irq_thresh, "log2 IRQ latency, 1-64 microframes");
 
@@ -89,66 +85,57 @@ static unsigned int hird;
 module_param(hird, int, S_IRUGO);
 MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
 
-#define	INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
+#define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
 
 #include "fotg210.h"
 
-/*-------------------------------------------------------------------------*/
-
 #define fotg210_dbg(fotg210, fmt, args...) \
-	dev_dbg(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+	dev_dbg(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
 #define fotg210_err(fotg210, fmt, args...) \
-	dev_err(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+	dev_err(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
 #define fotg210_info(fotg210, fmt, args...) \
-	dev_info(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+	dev_info(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
 #define fotg210_warn(fotg210, fmt, args...) \
-	dev_warn(fotg210_to_hcd(fotg210)->self.controller , fmt , ## args)
+	dev_warn(fotg210_to_hcd(fotg210)->self.controller, fmt, ## args)
 
-/* check the values in the HCSPARAMS register
- * (host controller _Structural_ parameters)
- * see EHCI spec, Table 2-4 for each value
+/* check the values in the HCSPARAMS register (host controller _Structural_
+ * parameters) see EHCI spec, Table 2-4 for each value
  */
 static void dbg_hcs_params(struct fotg210_hcd *fotg210, char *label)
 {
-	u32	params = fotg210_readl(fotg210, &fotg210->caps->hcs_params);
+	u32 params = fotg210_readl(fotg210, &fotg210->caps->hcs_params);
 
-	fotg210_dbg(fotg210,
-		"%s hcs_params 0x%x ports=%d\n",
-		label, params,
-		HCS_N_PORTS(params)
-		);
+	fotg210_dbg(fotg210, "%s hcs_params 0x%x ports=%d\n", label, params,
+			HCS_N_PORTS(params));
 }
 
-/* check the values in the HCCPARAMS register
- * (host controller _Capability_ parameters)
- * see EHCI Spec, Table 2-5 for each value
- * */
+/* check the values in the HCCPARAMS register (host controller _Capability_
+ * parameters) see EHCI Spec, Table 2-5 for each value
+ */
 static void dbg_hcc_params(struct fotg210_hcd *fotg210, char *label)
 {
-	u32	params = fotg210_readl(fotg210, &fotg210->caps->hcc_params);
+	u32 params = fotg210_readl(fotg210, &fotg210->caps->hcc_params);
 
-	fotg210_dbg(fotg210,
-		"%s hcc_params %04x uframes %s%s\n",
-		label,
-		params,
-		HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
-		HCC_CANPARK(params) ? " park" : "");
+	fotg210_dbg(fotg210, "%s hcc_params %04x uframes %s%s\n", label,
+			params,
+			HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
+			HCC_CANPARK(params) ? " park" : "");
 }
 
 static void __maybe_unused
 dbg_qtd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd)
 {
 	fotg210_dbg(fotg210, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
-		hc32_to_cpup(fotg210, &qtd->hw_next),
-		hc32_to_cpup(fotg210, &qtd->hw_alt_next),
-		hc32_to_cpup(fotg210, &qtd->hw_token),
-		hc32_to_cpup(fotg210, &qtd->hw_buf[0]));
+			hc32_to_cpup(fotg210, &qtd->hw_next),
+			hc32_to_cpup(fotg210, &qtd->hw_alt_next),
+			hc32_to_cpup(fotg210, &qtd->hw_token),
+			hc32_to_cpup(fotg210, &qtd->hw_buf[0]));
 	if (qtd->hw_buf[1])
 		fotg210_dbg(fotg210, "  p1=%08x p2=%08x p3=%08x p4=%08x\n",
-			hc32_to_cpup(fotg210, &qtd->hw_buf[1]),
-			hc32_to_cpup(fotg210, &qtd->hw_buf[2]),
-			hc32_to_cpup(fotg210, &qtd->hw_buf[3]),
-			hc32_to_cpup(fotg210, &qtd->hw_buf[4]));
+				hc32_to_cpup(fotg210, &qtd->hw_buf[1]),
+				hc32_to_cpup(fotg210, &qtd->hw_buf[2]),
+				hc32_to_cpup(fotg210, &qtd->hw_buf[3]),
+				hc32_to_cpup(fotg210, &qtd->hw_buf[4]));
 }
 
 static void __maybe_unused
@@ -156,101 +143,100 @@ dbg_qh(const char *label, struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 {
 	struct fotg210_qh_hw *hw = qh->hw;
 
-	fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label,
-		qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
+	fotg210_dbg(fotg210, "%s qh %p n%08x info %x %x qtd %x\n", label, qh,
+			hw->hw_next, hw->hw_info1, hw->hw_info2,
+			hw->hw_current);
+
 	dbg_qtd("overlay", fotg210, (struct fotg210_qtd *) &hw->hw_qtd_next);
 }
 
 static void __maybe_unused
 dbg_itd(const char *label, struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
 {
-	fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n",
-		label, itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next),
-		itd->urb);
+	fotg210_dbg(fotg210, "%s[%d] itd %p, next %08x, urb %p\n", label,
+			itd->frame, itd, hc32_to_cpu(fotg210, itd->hw_next),
+			itd->urb);
+
 	fotg210_dbg(fotg210,
-		"  trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
-		hc32_to_cpu(fotg210, itd->hw_transaction[0]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[1]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[2]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[3]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[4]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[5]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[6]),
-		hc32_to_cpu(fotg210, itd->hw_transaction[7]));
+			"  trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
+			hc32_to_cpu(fotg210, itd->hw_transaction[0]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[1]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[2]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[3]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[4]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[5]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[6]),
+			hc32_to_cpu(fotg210, itd->hw_transaction[7]));
+
 	fotg210_dbg(fotg210,
-		"  buf:   %08x %08x %08x %08x %08x %08x %08x\n",
-		hc32_to_cpu(fotg210, itd->hw_bufp[0]),
-		hc32_to_cpu(fotg210, itd->hw_bufp[1]),
-		hc32_to_cpu(fotg210, itd->hw_bufp[2]),
-		hc32_to_cpu(fotg210, itd->hw_bufp[3]),
-		hc32_to_cpu(fotg210, itd->hw_bufp[4]),
-		hc32_to_cpu(fotg210, itd->hw_bufp[5]),
-		hc32_to_cpu(fotg210, itd->hw_bufp[6]));
+			"  buf:   %08x %08x %08x %08x %08x %08x %08x\n",
+			hc32_to_cpu(fotg210, itd->hw_bufp[0]),
+			hc32_to_cpu(fotg210, itd->hw_bufp[1]),
+			hc32_to_cpu(fotg210, itd->hw_bufp[2]),
+			hc32_to_cpu(fotg210, itd->hw_bufp[3]),
+			hc32_to_cpu(fotg210, itd->hw_bufp[4]),
+			hc32_to_cpu(fotg210, itd->hw_bufp[5]),
+			hc32_to_cpu(fotg210, itd->hw_bufp[6]));
+
 	fotg210_dbg(fotg210, "  index: %d %d %d %d %d %d %d %d\n",
-		itd->index[0], itd->index[1], itd->index[2],
-		itd->index[3], itd->index[4], itd->index[5],
-		itd->index[6], itd->index[7]);
+			itd->index[0], itd->index[1], itd->index[2],
+			itd->index[3], itd->index[4], itd->index[5],
+			itd->index[6], itd->index[7]);
 }
 
 static int __maybe_unused
 dbg_status_buf(char *buf, unsigned len, const char *label, u32 status)
 {
-	return scnprintf(buf, len,
-		"%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
-		label, label[0] ? " " : "", status,
-		(status & STS_ASS) ? " Async" : "",
-		(status & STS_PSS) ? " Periodic" : "",
-		(status & STS_RECL) ? " Recl" : "",
-		(status & STS_HALT) ? " Halt" : "",
-		(status & STS_IAA) ? " IAA" : "",
-		(status & STS_FATAL) ? " FATAL" : "",
-		(status & STS_FLR) ? " FLR" : "",
-		(status & STS_PCD) ? " PCD" : "",
-		(status & STS_ERR) ? " ERR" : "",
-		(status & STS_INT) ? " INT" : ""
-		);
+	return scnprintf(buf, len, "%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
+			label, label[0] ? " " : "", status,
+			(status & STS_ASS) ? " Async" : "",
+			(status & STS_PSS) ? " Periodic" : "",
+			(status & STS_RECL) ? " Recl" : "",
+			(status & STS_HALT) ? " Halt" : "",
+			(status & STS_IAA) ? " IAA" : "",
+			(status & STS_FATAL) ? " FATAL" : "",
+			(status & STS_FLR) ? " FLR" : "",
+			(status & STS_PCD) ? " PCD" : "",
+			(status & STS_ERR) ? " ERR" : "",
+			(status & STS_INT) ? " INT" : "");
 }
 
 static int __maybe_unused
 dbg_intr_buf(char *buf, unsigned len, const char *label, u32 enable)
 {
-	return scnprintf(buf, len,
-		"%s%sintrenable %02x%s%s%s%s%s%s",
-		label, label[0] ? " " : "", enable,
-		(enable & STS_IAA) ? " IAA" : "",
-		(enable & STS_FATAL) ? " FATAL" : "",
-		(enable & STS_FLR) ? " FLR" : "",
-		(enable & STS_PCD) ? " PCD" : "",
-		(enable & STS_ERR) ? " ERR" : "",
-		(enable & STS_INT) ? " INT" : ""
-		);
+	return scnprintf(buf, len, "%s%sintrenable %02x%s%s%s%s%s%s",
+			label, label[0] ? " " : "", enable,
+			(enable & STS_IAA) ? " IAA" : "",
+			(enable & STS_FATAL) ? " FATAL" : "",
+			(enable & STS_FLR) ? " FLR" : "",
+			(enable & STS_PCD) ? " PCD" : "",
+			(enable & STS_ERR) ? " ERR" : "",
+			(enable & STS_INT) ? " INT" : "");
 }
 
 static const char *const fls_strings[] = { "1024", "512", "256", "??" };
 
-static int
-dbg_command_buf(char *buf, unsigned len, const char *label, u32 command)
+static int dbg_command_buf(char *buf, unsigned len, const char *label,
+		u32 command)
 {
 	return scnprintf(buf, len,
-		"%s%scommand %07x %s=%d ithresh=%d%s%s%s "
-		"period=%s%s %s",
-		label, label[0] ? " " : "", command,
-		(command & CMD_PARK) ? " park" : "(park)",
-		CMD_PARK_CNT(command),
-		(command >> 16) & 0x3f,
-		(command & CMD_IAAD) ? " IAAD" : "",
-		(command & CMD_ASE) ? " Async" : "",
-		(command & CMD_PSE) ? " Periodic" : "",
-		fls_strings[(command >> 2) & 0x3],
-		(command & CMD_RESET) ? " Reset" : "",
-		(command & CMD_RUN) ? "RUN" : "HALT"
-		);
-}
-
-static char
-*dbg_port_buf(char *buf, unsigned len, const char *label, int port, u32 status)
-{
-	char	*sig;
+			"%s%scommand %07x %s=%d ithresh=%d%s%s%s period=%s%s %s",
+			label, label[0] ? " " : "", command,
+			(command & CMD_PARK) ? " park" : "(park)",
+			CMD_PARK_CNT(command),
+			(command >> 16) & 0x3f,
+			(command & CMD_IAAD) ? " IAAD" : "",
+			(command & CMD_ASE) ? " Async" : "",
+			(command & CMD_PSE) ? " Periodic" : "",
+			fls_strings[(command >> 2) & 0x3],
+			(command & CMD_RESET) ? " Reset" : "",
+			(command & CMD_RUN) ? "RUN" : "HALT");
+}
+
+static char *dbg_port_buf(char *buf, unsigned len, const char *label, int port,
+		u32 status)
+{
+	char *sig;
 
 	/* signaling state */
 	switch (status & (3 << 10)) {
@@ -268,44 +254,41 @@ static char
 		break;
 	}
 
-	scnprintf(buf, len,
-		"%s%sport:%d status %06x %d "
-		"sig=%s%s%s%s%s%s%s%s",
-		label, label[0] ? " " : "", port, status,
-		status>>25,/*device address */
-		sig,
-		(status & PORT_RESET) ? " RESET" : "",
-		(status & PORT_SUSPEND) ? " SUSPEND" : "",
-		(status & PORT_RESUME) ? " RESUME" : "",
-		(status & PORT_PEC) ? " PEC" : "",
-		(status & PORT_PE) ? " PE" : "",
-		(status & PORT_CSC) ? " CSC" : "",
-		(status & PORT_CONNECT) ? " CONNECT" : "");
+	scnprintf(buf, len, "%s%sport:%d status %06x %d sig=%s%s%s%s%s%s%s%s",
+			label, label[0] ? " " : "", port, status,
+			status >> 25, /*device address */
+			sig,
+			(status & PORT_RESET) ? " RESET" : "",
+			(status & PORT_SUSPEND) ? " SUSPEND" : "",
+			(status & PORT_RESUME) ? " RESUME" : "",
+			(status & PORT_PEC) ? " PEC" : "",
+			(status & PORT_PE) ? " PE" : "",
+			(status & PORT_CSC) ? " CSC" : "",
+			(status & PORT_CONNECT) ? " CONNECT" : "");
+
 	return buf;
 }
 
 /* functions have the "wrong" filename when they're output... */
-#define dbg_status(fotg210, label, status) { \
-	char _buf[80]; \
-	dbg_status_buf(_buf, sizeof(_buf), label, status); \
-	fotg210_dbg(fotg210, "%s\n", _buf); \
+#define dbg_status(fotg210, label, status) {			\
+	char _buf[80];						\
+	dbg_status_buf(_buf, sizeof(_buf), label, status);	\
+	fotg210_dbg(fotg210, "%s\n", _buf);			\
 }
 
-#define dbg_cmd(fotg210, label, command) { \
-	char _buf[80]; \
-	dbg_command_buf(_buf, sizeof(_buf), label, command); \
-	fotg210_dbg(fotg210, "%s\n", _buf); \
+#define dbg_cmd(fotg210, label, command) {			\
+	char _buf[80];						\
+	dbg_command_buf(_buf, sizeof(_buf), label, command);	\
+	fotg210_dbg(fotg210, "%s\n", _buf);			\
 }
 
-#define dbg_port(fotg210, label, port, status) { \
-	char _buf[80]; \
-	fotg210_dbg(fotg210, "%s\n", dbg_port_buf(_buf, sizeof(_buf), label, port, status) ); \
+#define dbg_port(fotg210, label, port, status) {			       \
+	char _buf[80];							       \
+	fotg210_dbg(fotg210, "%s\n",					       \
+			dbg_port_buf(_buf, sizeof(_buf), label, port, status));\
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* troubleshooting help: expose state in debugfs */
-
 static int debug_async_open(struct inode *, struct file *);
 static int debug_periodic_open(struct inode *, struct file *);
 static int debug_registers_open(struct inode *, struct file *);
@@ -347,17 +330,22 @@ struct debug_buffer {
 	size_t alloc_size;
 };
 
-#define speed_char(info1)({ char tmp; \
-		switch (info1 & (3 << 12)) { \
-		case QH_FULL_SPEED:	\
-			tmp = 'f'; break; \
-		case QH_LOW_SPEED:	\
-			tmp = 'l'; break; \
-		case QH_HIGH_SPEED:	\
-			tmp = 'h'; break; \
-		default:		\
-			tmp = '?'; break; \
-		} tmp; })
+static inline char speed_char(u32 scratch)
+{
+	switch (scratch & (3 << 12)) {
+	case QH_FULL_SPEED:
+		return 'f';
+
+	case QH_LOW_SPEED:
+		return 'l';
+
+	case QH_HIGH_SPEED:
+		return 'h';
+
+	default:
+		return '?';
+	}
+}
 
 static inline char token_mark(struct fotg210_hcd *fotg210, __hc32 token)
 {
@@ -373,33 +361,29 @@ static inline char token_mark(struct fotg210_hcd *fotg210, __hc32 token)
 	return '/';
 }
 
-static void qh_lines(
-	struct fotg210_hcd *fotg210,
-	struct fotg210_qh *qh,
-	char **nextp,
-	unsigned *sizep
-)
-{
-	u32			scratch;
-	u32			hw_curr;
-	struct fotg210_qtd	*td;
-	unsigned		temp;
-	unsigned		size = *sizep;
-	char			*next = *nextp;
-	char			mark;
-	__le32			list_end = FOTG210_LIST_END(fotg210);
-	struct fotg210_qh_hw	*hw = qh->hw;
-
-	if (hw->hw_qtd_next == list_end)	/* NEC does this */
+static void qh_lines(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
+		char **nextp, unsigned *sizep)
+{
+	u32 scratch;
+	u32 hw_curr;
+	struct fotg210_qtd *td;
+	unsigned temp;
+	unsigned size = *sizep;
+	char *next = *nextp;
+	char mark;
+	__le32 list_end = FOTG210_LIST_END(fotg210);
+	struct fotg210_qh_hw *hw = qh->hw;
+
+	if (hw->hw_qtd_next == list_end) /* NEC does this */
 		mark = '@';
 	else
 		mark = token_mark(fotg210, hw->hw_token);
-	if (mark == '/') {	/* qh_alt_next controls qh advance? */
-		if ((hw->hw_alt_next & QTD_MASK(fotg210))
-				== fotg210->async->hw->hw_alt_next)
-			mark = '#';	/* blocked */
+	if (mark == '/') { /* qh_alt_next controls qh advance? */
+		if ((hw->hw_alt_next & QTD_MASK(fotg210)) ==
+		    fotg210->async->hw->hw_alt_next)
+			mark = '#'; /* blocked */
 		else if (hw->hw_alt_next == list_end)
-			mark = '.';	/* use hw_qtd_next */
+			mark = '.'; /* use hw_qtd_next */
 		/* else alt_next points to some other qtd */
 	}
 	scratch = hc32_to_cpup(fotg210, &hw->hw_info1);
@@ -462,6 +446,7 @@ static void qh_lines(
 	temp = snprintf(next, size, "\n");
 	if (size < temp)
 		temp = size;
+
 	size -= temp;
 	next += temp;
 
@@ -472,12 +457,12 @@ done:
 
 static ssize_t fill_async_buffer(struct debug_buffer *buf)
 {
-	struct usb_hcd		*hcd;
-	struct fotg210_hcd	*fotg210;
-	unsigned long		flags;
-	unsigned		temp, size;
-	char			*next;
-	struct fotg210_qh		*qh;
+	struct usb_hcd *hcd;
+	struct fotg210_hcd *fotg210;
+	unsigned long flags;
+	unsigned temp, size;
+	char *next;
+	struct fotg210_qh *qh;
 
 	hcd = bus_to_hcd(buf->bus);
 	fotg210 = hcd_to_fotg210(hcd);
@@ -492,7 +477,7 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf)
 	 */
 	spin_lock_irqsave(&fotg210->lock, flags);
 	for (qh = fotg210->async->qh_next.qh; size > 0 && qh;
-	     qh = qh->qh_next.qh)
+			qh = qh->qh_next.qh)
 		qh_lines(fotg210, qh, &next, &size);
 	if (fotg210->async_unlink && size > 0) {
 		temp = scnprintf(next, size, "\nunlink =\n");
@@ -508,21 +493,50 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf)
 	return strlen(buf->output_buf);
 }
 
+/* count tds, get ep direction */
+static unsigned output_buf_tds_dir(char *buf, struct fotg210_hcd *fotg210,
+		struct fotg210_qh_hw *hw, struct fotg210_qh *qh, unsigned size)
+{
+	u32 scratch = hc32_to_cpup(fotg210, &hw->hw_info1);
+	struct fotg210_qtd *qtd;
+	char *type = "";
+	unsigned temp = 0;
+
+	/* count tds, get ep direction */
+	list_for_each_entry(qtd, &qh->qtd_list, qtd_list) {
+		temp++;
+		switch ((hc32_to_cpu(fotg210, qtd->hw_token) >> 8) & 0x03) {
+		case 0:
+			type = "out";
+			continue;
+		case 1:
+			type = "in";
+			continue;
+		}
+	}
+
+	return scnprintf(buf, size, "(%c%d ep%d%s [%d/%d] q%d p%d)",
+			speed_char(scratch), scratch & 0x007f,
+			(scratch >> 8) & 0x000f, type, qh->usecs,
+			qh->c_usecs, temp, (scratch >> 16) & 0x7ff);
+}
+
 #define DBG_SCHED_LIMIT 64
 static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 {
-	struct usb_hcd		*hcd;
-	struct fotg210_hcd		*fotg210;
-	unsigned long		flags;
-	union fotg210_shadow	p, *seen;
-	unsigned		temp, size, seen_count;
-	char			*next;
-	unsigned		i;
-	__hc32			tag;
-
-	seen = kmalloc(DBG_SCHED_LIMIT * sizeof(*seen), GFP_ATOMIC);
+	struct usb_hcd *hcd;
+	struct fotg210_hcd *fotg210;
+	unsigned long flags;
+	union fotg210_shadow p, *seen;
+	unsigned temp, size, seen_count;
+	char *next;
+	unsigned i;
+	__hc32 tag;
+
+	seen = kmalloc_array(DBG_SCHED_LIMIT, sizeof(*seen), GFP_ATOMIC);
 	if (!seen)
 		return 0;
+
 	seen_count = 0;
 
 	hcd = bus_to_hcd(buf->bus);
@@ -542,6 +556,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 		p = fotg210->pshadow[i];
 		if (likely(!p.ptr))
 			continue;
+
 		tag = Q_NEXT_TYPE(fotg210, fotg210->periodic[i]);
 
 		temp = scnprintf(next, size, "%4d: ", i);
@@ -569,7 +584,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 						continue;
 					if (p.qh->qh_next.ptr) {
 						temp = scnprintf(next, size,
-							" ...");
+								" ...");
 						size -= temp;
 						next += temp;
 					}
@@ -577,38 +592,9 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 				}
 				/* show more info the first time around */
 				if (temp == seen_count) {
-					u32	scratch = hc32_to_cpup(fotg210,
-							&hw->hw_info1);
-					struct fotg210_qtd	*qtd;
-					char		*type = "";
-
-					/* count tds, get ep direction */
-					temp = 0;
-					list_for_each_entry(qtd,
-							&p.qh->qtd_list,
-							qtd_list) {
-						temp++;
-						switch (0x03 & (hc32_to_cpu(
-							fotg210,
-							qtd->hw_token) >> 8)) {
-						case 0:
-							type = "out";
-							continue;
-						case 1:
-							type = "in";
-							continue;
-						}
-					}
-
-					temp = scnprintf(next, size,
-						"(%c%d ep%d%s "
-						"[%d/%d] q%d p%d)",
-						speed_char(scratch),
-						scratch & 0x007f,
-						(scratch >> 8) & 0x000f, type,
-						p.qh->usecs, p.qh->c_usecs,
-						temp,
-						0x7ff & (scratch >> 16));
+					temp = output_buf_tds_dir(next,
+							fotg210, hw,
+							p.qh, size);
 
 					if (seen_count < DBG_SCHED_LIMIT)
 						seen[seen_count++].qh = p.qh;
@@ -619,14 +605,14 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 				break;
 			case Q_TYPE_FSTN:
 				temp = scnprintf(next, size,
-					" fstn-%8x/%p", p.fstn->hw_prev,
-					p.fstn);
+						" fstn-%8x/%p",
+						p.fstn->hw_prev, p.fstn);
 				tag = Q_NEXT_TYPE(fotg210, p.fstn->hw_next);
 				p = p.fstn->fstn_next;
 				break;
 			case Q_TYPE_ITD:
 				temp = scnprintf(next, size,
-					" itd/%p", p.itd);
+						" itd/%p", p.itd);
 				tag = Q_NEXT_TYPE(fotg210, p.itd->hw_next);
 				p = p.itd->itd_next;
 				break;
@@ -663,13 +649,13 @@ static const char *rh_state_string(struct fotg210_hcd *fotg210)
 
 static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 {
-	struct usb_hcd		*hcd;
-	struct fotg210_hcd	*fotg210;
-	unsigned long		flags;
-	unsigned		temp, size, i;
-	char			*next, scratch[80];
-	static const char	fmt[] = "%*s\n";
-	static const char	label[] = "";
+	struct usb_hcd *hcd;
+	struct fotg210_hcd *fotg210;
+	unsigned long flags;
+	unsigned temp, size, i;
+	char *next, scratch[80];
+	static const char fmt[] = "%*s\n";
+	static const char label[] = "";
 
 	hcd = bus_to_hcd(buf->bus);
 	fotg210 = hcd_to_fotg210(hcd);
@@ -680,26 +666,26 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 
 	if (!HCD_HW_ACCESSIBLE(hcd)) {
 		size = scnprintf(next, size,
-			"bus %s, device %s\n"
-			"%s\n"
-			"SUSPENDED(no register access)\n",
-			hcd->self.controller->bus->name,
-			dev_name(hcd->self.controller),
-			hcd->product_desc);
+				"bus %s, device %s\n"
+				"%s\n"
+				"SUSPENDED(no register access)\n",
+				hcd->self.controller->bus->name,
+				dev_name(hcd->self.controller),
+				hcd->product_desc);
 		goto done;
 	}
 
 	/* Capability Registers */
 	i = HC_VERSION(fotg210, fotg210_readl(fotg210,
-					      &fotg210->caps->hc_capbase));
+			&fotg210->caps->hc_capbase));
 	temp = scnprintf(next, size,
-		"bus %s, device %s\n"
-		"%s\n"
-		"EHCI %x.%02x, rh state %s\n",
-		hcd->self.controller->bus->name,
-		dev_name(hcd->self.controller),
-		hcd->product_desc,
-		i >> 8, i & 0x0ff, rh_state_string(fotg210));
+			"bus %s, device %s\n"
+			"%s\n"
+			"EHCI %x.%02x, rh state %s\n",
+			hcd->self.controller->bus->name,
+			dev_name(hcd->self.controller),
+			hcd->product_desc,
+			i >> 8, i & 0x0ff, rh_state_string(fotg210));
 	size -= temp;
 	next += temp;
 
@@ -747,14 +733,14 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
 
 #ifdef FOTG210_STATS
 	temp = scnprintf(next, size,
-		"irq normal %ld err %ld iaa %ld(lost %ld)\n",
-		fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa,
-		fotg210->stats.lost_iaa);
+			"irq normal %ld err %ld iaa %ld(lost %ld)\n",
+			fotg210->stats.normal, fotg210->stats.error,
+			fotg210->stats.iaa, fotg210->stats.lost_iaa);
 	size -= temp;
 	next += temp;
 
 	temp = scnprintf(next, size, "complete %ld unlink %ld\n",
-		fotg210->stats.complete, fotg210->stats.unlink);
+			fotg210->stats.complete, fotg210->stats.unlink);
 	size -= temp;
 	next += temp;
 #endif
@@ -765,8 +751,8 @@ done:
 	return buf->alloc_size - size;
 }
 
-static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
-				ssize_t (*fill_func)(struct debug_buffer *))
+static struct debug_buffer
+*alloc_buffer(struct usb_bus *bus, ssize_t (*fill_func)(struct debug_buffer *))
 {
 	struct debug_buffer *buf;
 
@@ -806,7 +792,7 @@ out:
 }
 
 static ssize_t debug_output(struct file *file, char __user *user_buf,
-			    size_t len, loff_t *offset)
+		size_t len, loff_t *offset)
 {
 	struct debug_buffer *buf = file->private_data;
 	int ret = 0;
@@ -822,7 +808,7 @@ static ssize_t debug_output(struct file *file, char __user *user_buf,
 	mutex_unlock(&buf->mutex);
 
 	ret = simple_read_from_buffer(user_buf, len, offset,
-				      buf->output_buf, buf->count);
+			buf->output_buf, buf->count);
 
 out:
 	return ret;
@@ -850,6 +836,7 @@ static int debug_async_open(struct inode *inode, struct file *file)
 static int debug_periodic_open(struct inode *inode, struct file *file)
 {
 	struct debug_buffer *buf;
+
 	buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
 	if (!buf)
 		return -ENOMEM;
@@ -862,7 +849,7 @@ static int debug_periodic_open(struct inode *inode, struct file *file)
 static int debug_registers_open(struct inode *inode, struct file *file)
 {
 	file->private_data = alloc_buffer(inode->i_private,
-					  fill_registers_buffer);
+			fill_registers_buffer);
 
 	return file->private_data ? 0 : -ENOMEM;
 }
@@ -872,20 +859,20 @@ static inline void create_debug_files(struct fotg210_hcd *fotg210)
 	struct usb_bus *bus = &fotg210_to_hcd(fotg210)->self;
 
 	fotg210->debug_dir = debugfs_create_dir(bus->bus_name,
-						fotg210_debug_root);
+			fotg210_debug_root);
 	if (!fotg210->debug_dir)
 		return;
 
 	if (!debugfs_create_file("async", S_IRUGO, fotg210->debug_dir, bus,
-						&debug_async_fops))
+			&debug_async_fops))
 		goto file_error;
 
 	if (!debugfs_create_file("periodic", S_IRUGO, fotg210->debug_dir, bus,
-						&debug_periodic_fops))
+			&debug_periodic_fops))
 		goto file_error;
 
 	if (!debugfs_create_file("registers", S_IRUGO, fotg210->debug_dir, bus,
-						    &debug_registers_fops))
+			&debug_registers_fops))
 		goto file_error;
 
 	return;
@@ -899,10 +886,7 @@ static inline void remove_debug_files(struct fotg210_hcd *fotg210)
 	debugfs_remove_recursive(fotg210->debug_dir);
 }
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * handshake - spin reading hc until handshake completes or fails
+/* handshake - spin reading hc until handshake completes or fails
  * @ptr: address of hc register to be read
  * @mask: bits to look at in result of read
  * @done: value of those bits when handshake succeeds
@@ -919,9 +903,9 @@ static inline void remove_debug_files(struct fotg210_hcd *fotg210)
  * bridge shutdown:  shutting down the bridge before the devices using it.
  */
 static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr,
-		      u32 mask, u32 done, int usec)
+		u32 mask, u32 done, int usec)
 {
-	u32	result;
+	u32 result;
 
 	do {
 		result = fotg210_readl(fotg210, ptr);
@@ -936,13 +920,12 @@ static int handshake(struct fotg210_hcd *fotg210, void __iomem *ptr,
 	return -ETIMEDOUT;
 }
 
-/*
- * Force HC to halt state from unknown (EHCI spec section 2.3).
+/* Force HC to halt state from unknown (EHCI spec section 2.3).
  * Must be called with interrupts enabled and the lock not held.
  */
 static int fotg210_halt(struct fotg210_hcd *fotg210)
 {
-	u32	temp;
+	u32 temp;
 
 	spin_lock_irq(&fotg210->lock);
 
@@ -962,20 +945,20 @@ static int fotg210_halt(struct fotg210_hcd *fotg210)
 	synchronize_irq(fotg210_to_hcd(fotg210)->irq);
 
 	return handshake(fotg210, &fotg210->regs->status,
-			  STS_HALT, STS_HALT, 16 * 125);
+			STS_HALT, STS_HALT, 16 * 125);
 }
 
-/*
- * Reset a non-running (STS_HALT == 1) controller.
+/* Reset a non-running (STS_HALT == 1) controller.
  * Must be called with interrupts enabled and the lock not held.
  */
 static int fotg210_reset(struct fotg210_hcd *fotg210)
 {
-	int	retval;
-	u32	command = fotg210_readl(fotg210, &fotg210->regs->command);
+	int retval;
+	u32 command = fotg210_readl(fotg210, &fotg210->regs->command);
 
 	/* If the EHCI debug controller is active, special care must be
-	 * taken before and after a host controller reset */
+	 * taken before and after a host controller reset
+	 */
 	if (fotg210->debug && !dbgp_reset_prep(fotg210_to_hcd(fotg210)))
 		fotg210->debug = NULL;
 
@@ -985,7 +968,7 @@ static int fotg210_reset(struct fotg210_hcd *fotg210)
 	fotg210->rh_state = FOTG210_RH_HALTED;
 	fotg210->next_statechange = jiffies;
 	retval = handshake(fotg210, &fotg210->regs->command,
-			    CMD_RESET, 0, 250 * 1000);
+			CMD_RESET, 0, 250 * 1000);
 
 	if (retval)
 		return retval;
@@ -998,13 +981,12 @@ static int fotg210_reset(struct fotg210_hcd *fotg210)
 	return retval;
 }
 
-/*
- * Idle the controller (turn off the schedules).
+/* Idle the controller (turn off the schedules).
  * Must be called with interrupts enabled and the lock not held.
  */
 static void fotg210_quiesce(struct fotg210_hcd *fotg210)
 {
-	u32	temp;
+	u32 temp;
 
 	if (fotg210->rh_state != FOTG210_RH_RUNNING)
 		return;
@@ -1012,7 +994,7 @@ static void fotg210_quiesce(struct fotg210_hcd *fotg210)
 	/* wait for any schedule enables/disables to take effect */
 	temp = (fotg210->command << 10) & (STS_ASS | STS_PSS);
 	handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, temp,
-		  16 * 125);
+			16 * 125);
 
 	/* then disable anything that's still active */
 	spin_lock_irq(&fotg210->lock);
@@ -1022,11 +1004,9 @@ static void fotg210_quiesce(struct fotg210_hcd *fotg210)
 
 	/* hardware can take 16 microframes to turn off ... */
 	handshake(fotg210, &fotg210->regs->status, STS_ASS | STS_PSS, 0,
-		  16 * 125);
+			16 * 125);
 }
 
-/*-------------------------------------------------------------------------*/
-
 static void end_unlink_async(struct fotg210_hcd *fotg210);
 static void unlink_empty_async(struct fotg210_hcd *fotg210);
 static void fotg210_work(struct fotg210_hcd *fotg210);
@@ -1034,8 +1014,6 @@ static void start_unlink_intr(struct fotg210_hcd *fotg210,
 			      struct fotg210_qh *qh);
 static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
 
-/*-------------------------------------------------------------------------*/
-
 /* Set a bit in the USBCMD register */
 static void fotg210_set_command_bit(struct fotg210_hcd *fotg210, u32 bit)
 {
@@ -1056,10 +1034,7 @@ static void fotg210_clear_command_bit(struct fotg210_hcd *fotg210, u32 bit)
 	fotg210_readl(fotg210, &fotg210->regs->command);
 }
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI timer support...  Now using hrtimers.
+/* EHCI timer support...  Now using hrtimers.
  *
  * Lots of different events are triggered from fotg210->hrtimer.  Whenever
  * the timer routine runs, it checks each possible event; events that are
@@ -1081,8 +1056,7 @@ static void fotg210_clear_command_bit(struct fotg210_hcd *fotg210, u32 bit)
  * allow for an expiration range of 1 ms.
  */
 
-/*
- * Delay lengths for the hrtimer event types.
+/* Delay lengths for the hrtimer event types.
  * Keep this list sorted by delay length, in the same order as
  * the event types indexed by enum fotg210_hrtimer_event in fotg210.h.
  */
@@ -1103,7 +1077,7 @@ static unsigned event_delays_ns[] = {
 static void fotg210_enable_event(struct fotg210_hcd *fotg210, unsigned event,
 		bool resched)
 {
-	ktime_t		*timeout = &fotg210->hr_timeouts[event];
+	ktime_t *timeout = &fotg210->hr_timeouts[event];
 
 	if (resched)
 		*timeout = ktime_add(ktime_get(),
@@ -1122,7 +1096,7 @@ static void fotg210_enable_event(struct fotg210_hcd *fotg210, unsigned event,
 /* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
 static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
 {
-	unsigned	actual, want;
+	unsigned actual, want;
 
 	/* Don't enable anything if the controller isn't running (e.g., died) */
 	if (fotg210->rh_state != FOTG210_RH_RUNNING)
@@ -1136,7 +1110,7 @@ static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
 		/* Poll again later, but give up after about 20 ms */
 		if (fotg210->ASS_poll_count++ < 20) {
 			fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_ASS,
-					     true);
+					true);
 			return;
 		}
 		fotg210_dbg(fotg210, "Waited too long for the async schedule status (%x/%x), giving up\n",
@@ -1154,8 +1128,8 @@ static void fotg210_poll_ASS(struct fotg210_hcd *fotg210)
 
 			/* Turn off the schedule after a while */
 			fotg210_enable_event(fotg210,
-					     FOTG210_HRTIMER_DISABLE_ASYNC,
-					     true);
+					FOTG210_HRTIMER_DISABLE_ASYNC,
+					true);
 		}
 	}
 }
@@ -1170,7 +1144,7 @@ static void fotg210_disable_ASE(struct fotg210_hcd *fotg210)
 /* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
 static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
 {
-	unsigned	actual, want;
+	unsigned actual, want;
 
 	/* Don't do anything if the controller isn't running (e.g., died) */
 	if (fotg210->rh_state != FOTG210_RH_RUNNING)
@@ -1184,7 +1158,7 @@ static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
 		/* Poll again later, but give up after about 20 ms */
 		if (fotg210->PSS_poll_count++ < 20) {
 			fotg210_enable_event(fotg210, FOTG210_HRTIMER_POLL_PSS,
-					     true);
+					true);
 			return;
 		}
 		fotg210_dbg(fotg210, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
@@ -1202,8 +1176,8 @@ static void fotg210_poll_PSS(struct fotg210_hcd *fotg210)
 
 			/* Turn off the schedule after a while */
 			fotg210_enable_event(fotg210,
-					     FOTG210_HRTIMER_DISABLE_PERIODIC,
-					     true);
+					FOTG210_HRTIMER_DISABLE_PERIODIC,
+					true);
 		}
 	}
 }
@@ -1224,7 +1198,7 @@ static void fotg210_handle_controller_death(struct fotg210_hcd *fotg210)
 		if (fotg210->died_poll_count++ < 5) {
 			/* Try again later */
 			fotg210_enable_event(fotg210,
-					     FOTG210_HRTIMER_POLL_DEAD, true);
+					FOTG210_HRTIMER_POLL_DEAD, true);
 			return;
 		}
 		fotg210_warn(fotg210, "Waited too long for the controller to stop, giving up\n");
@@ -1243,7 +1217,7 @@ static void fotg210_handle_controller_death(struct fotg210_hcd *fotg210)
 /* Handle unlinked interrupt QHs once they are gone from the hardware */
 static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
 {
-	bool		stopped = (fotg210->rh_state < FOTG210_RH_RUNNING);
+	bool stopped = (fotg210->rh_state < FOTG210_RH_RUNNING);
 
 	/*
 	 * Process all the QHs on the intr_unlink list that were added
@@ -1254,7 +1228,7 @@ static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
 	 */
 	fotg210->intr_unlinking = true;
 	while (fotg210->intr_unlink) {
-		struct fotg210_qh	*qh = fotg210->intr_unlink;
+		struct fotg210_qh *qh = fotg210->intr_unlink;
 
 		if (!stopped && qh->unlink_cycle == fotg210->intr_unlink_cycle)
 			break;
@@ -1266,7 +1240,7 @@ static void fotg210_handle_intr_unlinks(struct fotg210_hcd *fotg210)
 	/* Handle remaining entries later */
 	if (fotg210->intr_unlink) {
 		fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR,
-				     true);
+				true);
 		++fotg210->intr_unlink_cycle;
 	}
 	fotg210->intr_unlinking = false;
@@ -1288,7 +1262,7 @@ static void start_free_itds(struct fotg210_hcd *fotg210)
 /* Wait for controller to stop using old iTDs and siTDs */
 static void end_free_itds(struct fotg210_hcd *fotg210)
 {
-	struct fotg210_itd		*itd, *n;
+	struct fotg210_itd *itd, *n;
 
 	if (fotg210->rh_state < FOTG210_RH_RUNNING)
 		fotg210->last_itd_to_free = NULL;
@@ -1339,7 +1313,7 @@ static void fotg210_iaa_watchdog(struct fotg210_hcd *fotg210)
 		if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
 			COUNT(fotg210->stats.lost_iaa);
 			fotg210_writel(fotg210, STS_IAA,
-				       &fotg210->regs->status);
+					&fotg210->regs->status);
 		}
 
 		fotg210_dbg(fotg210, "IAA watchdog: status %x cmd %x\n",
@@ -1355,7 +1329,7 @@ static void turn_on_io_watchdog(struct fotg210_hcd *fotg210)
 	/* Not needed if the controller isn't running or it's already enabled */
 	if (fotg210->rh_state != FOTG210_RH_RUNNING ||
 			(fotg210->enabled_hrtimer_events &
-				BIT(FOTG210_HRTIMER_IO_WATCHDOG)))
+			BIT(FOTG210_HRTIMER_IO_WATCHDOG)))
 		return;
 
 	/*
@@ -1365,12 +1339,11 @@ static void turn_on_io_watchdog(struct fotg210_hcd *fotg210)
 	if (fotg210->isoc_count > 0 || (fotg210->need_io_watchdog &&
 			fotg210->async_count + fotg210->intr_count > 0))
 		fotg210_enable_event(fotg210, FOTG210_HRTIMER_IO_WATCHDOG,
-				     true);
+				true);
 }
 
 
-/*
- * Handler functions for the hrtimer event types.
+/* Handler functions for the hrtimer event types.
  * Keep this array in the same order as the event types indexed by
  * enum fotg210_hrtimer_event in fotg210.h.
  */
@@ -1391,10 +1364,10 @@ static enum hrtimer_restart fotg210_hrtimer_func(struct hrtimer *t)
 {
 	struct fotg210_hcd *fotg210 =
 			container_of(t, struct fotg210_hcd, hrtimer);
-	ktime_t		now;
-	unsigned long	events;
-	unsigned long	flags;
-	unsigned	e;
+	ktime_t now;
+	unsigned long events;
+	unsigned long flags;
+	unsigned e;
 
 	spin_lock_irqsave(&fotg210->lock, flags);
 
@@ -1418,50 +1391,37 @@ static enum hrtimer_restart fotg210_hrtimer_func(struct hrtimer *t)
 	return HRTIMER_NORESTART;
 }
 
-/*-------------------------------------------------------------------------*/
-
-#define fotg210_bus_suspend	NULL
-#define fotg210_bus_resume	NULL
+#define fotg210_bus_suspend NULL
+#define fotg210_bus_resume NULL
 
-/*-------------------------------------------------------------------------*/
-
-static int check_reset_complete(
-	struct fotg210_hcd	*fotg210,
-	int		index,
-	u32 __iomem	*status_reg,
-	int		port_status
-) {
+static int check_reset_complete(struct fotg210_hcd *fotg210, int index,
+		u32 __iomem *status_reg, int port_status)
+{
 	if (!(port_status & PORT_CONNECT))
 		return port_status;
 
 	/* if reset finished and it's still not enabled -- handoff */
-	if (!(port_status & PORT_PE)) {
+	if (!(port_status & PORT_PE))
 		/* with integrated TT, there's nobody to hand it to! */
-		fotg210_dbg(fotg210,
-			"Failed to enable port %d on root hub TT\n",
-			index+1);
-		return port_status;
-	} else {
+		fotg210_dbg(fotg210, "Failed to enable port %d on root hub TT\n",
+				index + 1);
+	else
 		fotg210_dbg(fotg210, "port %d reset complete, port enabled\n",
-			index + 1);
-	}
+				index + 1);
 
 	return port_status;
 }
 
-/*-------------------------------------------------------------------------*/
-
 
 /* build "status change" packet (one or two bytes) from HC registers */
 
-static int
-fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
+static int fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
 {
-	struct fotg210_hcd	*fotg210 = hcd_to_fotg210(hcd);
-	u32		temp, status;
-	u32		mask;
-	int		retval = 1;
-	unsigned long	flags;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	u32 temp, status;
+	u32 mask;
+	int retval = 1;
+	unsigned long flags;
 
 	/* init status to no-changes */
 	buf[0] = 0;
@@ -1488,9 +1448,9 @@ fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
 	 * controller by the user.
 	 */
 
-	if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend)
-			|| (fotg210->reset_done[0] && time_after_eq(
-				jiffies, fotg210->reset_done[0]))) {
+	if ((temp & mask) != 0 || test_bit(0, &fotg210->port_c_suspend) ||
+			(fotg210->reset_done[0] &&
+			time_after_eq(jiffies, fotg210->reset_done[0]))) {
 		buf[0] |= 1 << 1;
 		status = STS_PCD;
 	}
@@ -1499,15 +1459,11 @@ fotg210_hub_status_data(struct usb_hcd *hcd, char *buf)
 	return status ? retval : 0;
 }
 
-/*-------------------------------------------------------------------------*/
-
-static void
-fotg210_hub_descriptor(
-	struct fotg210_hcd		*fotg210,
-	struct usb_hub_descriptor	*desc
-) {
-	int		ports = HCS_N_PORTS(fotg210->hcs_params);
-	u16		temp;
+static void fotg210_hub_descriptor(struct fotg210_hcd *fotg210,
+		struct usb_hub_descriptor *desc)
+{
+	int ports = HCS_N_PORTS(fotg210->hcs_params);
+	u16 temp;
 
 	desc->bDescriptorType = USB_DT_HUB;
 	desc->bPwrOn2PwrGood = 10;	/* fotg210 1.0, 2.3.9 says 20ms max */
@@ -1526,23 +1482,16 @@ fotg210_hub_descriptor(
 	desc->wHubCharacteristics = cpu_to_le16(temp);
 }
 
-/*-------------------------------------------------------------------------*/
-
-static int fotg210_hub_control(
-	struct usb_hcd	*hcd,
-	u16		typeReq,
-	u16		wValue,
-	u16		wIndex,
-	char		*buf,
-	u16		wLength
-) {
-	struct fotg210_hcd	*fotg210 = hcd_to_fotg210(hcd);
-	int		ports = HCS_N_PORTS(fotg210->hcs_params);
-	u32 __iomem	*status_reg = &fotg210->regs->port_status;
-	u32		temp, temp1, status;
-	unsigned long	flags;
-	int		retval = 0;
-	unsigned	selector;
+static int fotg210_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+		u16 wIndex, char *buf, u16 wLength)
+{
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	int ports = HCS_N_PORTS(fotg210->hcs_params);
+	u32 __iomem *status_reg = &fotg210->regs->port_status;
+	u32 temp, temp1, status;
+	unsigned long flags;
+	int retval = 0;
+	unsigned selector;
 
 	/*
 	 * FIXME:  support SetPortFeatures USB_PORT_FEAT_INDICATOR.
@@ -1605,7 +1554,7 @@ static int fotg210_hub_control(
 			break;
 		case USB_PORT_FEAT_C_OVER_CURRENT:
 			fotg210_writel(fotg210, temp | OTGISR_OVC,
-				       &fotg210->regs->otgisr);
+					&fotg210->regs->otgisr);
 			break;
 		case USB_PORT_FEAT_C_RESET:
 			/* GetPortStatus clears reset */
@@ -1617,7 +1566,7 @@ static int fotg210_hub_control(
 		break;
 	case GetHubDescriptor:
 		fotg210_hub_descriptor(fotg210, (struct usb_hub_descriptor *)
-			buf);
+				buf);
 		break;
 	case GetHubStatus:
 		/* no hub-wide feature/status flags */
@@ -1663,16 +1612,16 @@ static int fotg210_hub_control(
 
 				/* stop resume signaling */
 				temp = fotg210_readl(fotg210, status_reg);
-				fotg210_writel(fotg210,
-					temp & ~(PORT_RWC_BITS | PORT_RESUME),
-					status_reg);
+				fotg210_writel(fotg210, temp &
+						~(PORT_RWC_BITS | PORT_RESUME),
+						status_reg);
 				clear_bit(wIndex, &fotg210->resuming_ports);
 				retval = handshake(fotg210, status_reg,
-					   PORT_RESUME, 0, 2000 /* 2msec */);
+						PORT_RESUME, 0, 2000);/* 2ms */
 				if (retval != 0) {
 					fotg210_err(fotg210,
-						"port %d resume error %d\n",
-						wIndex + 1, retval);
+							"port %d resume error %d\n",
+							wIndex + 1, retval);
 					goto error;
 				}
 				temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
@@ -1680,17 +1629,16 @@ static int fotg210_hub_control(
 		}
 
 		/* whoever resets must GetPortStatus to complete it!! */
-		if ((temp & PORT_RESET)
-				&& time_after_eq(jiffies,
-					fotg210->reset_done[wIndex])) {
+		if ((temp & PORT_RESET) && time_after_eq(jiffies,
+				fotg210->reset_done[wIndex])) {
 			status |= USB_PORT_STAT_C_RESET << 16;
 			fotg210->reset_done[wIndex] = 0;
 			clear_bit(wIndex, &fotg210->resuming_ports);
 
 			/* force reset to complete */
 			fotg210_writel(fotg210,
-				       temp & ~(PORT_RWC_BITS | PORT_RESET),
-				       status_reg);
+					temp & ~(PORT_RWC_BITS | PORT_RESET),
+					status_reg);
 			/* REVISIT:  some hardware needs 550+ usec to clear
 			 * this bit; seems too long to spin routinely...
 			 */
@@ -1698,7 +1646,7 @@ static int fotg210_hub_control(
 					PORT_RESET, 0, 1000);
 			if (retval != 0) {
 				fotg210_err(fotg210, "port %d reset error %d\n",
-					wIndex + 1, retval);
+						wIndex + 1, retval);
 				goto error;
 			}
 
@@ -1718,7 +1666,7 @@ static int fotg210_hub_control(
 			temp &= ~PORT_RWC_BITS;
 			fotg210_writel(fotg210, temp, status_reg);
 			fotg210_dbg(fotg210, "port %d --> companion\n",
-				    wIndex + 1);
+					wIndex + 1);
 			temp = fotg210_readl(fotg210, status_reg);
 		}
 
@@ -1788,7 +1736,7 @@ static int fotg210_hub_control(
 			 * mode if we have hostpc feature
 			 */
 			fotg210_writel(fotg210, temp | PORT_SUSPEND,
-				       status_reg);
+					status_reg);
 			set_bit(wIndex, &fotg210->suspended_ports);
 			break;
 		case USB_PORT_FEAT_RESET:
@@ -1866,9 +1814,8 @@ static int __maybe_unused fotg210_port_handed_over(struct usb_hcd *hcd,
 {
 	return 0;
 }
-/*-------------------------------------------------------------------------*/
-/*
- * There's basically three types of memory:
+
+/* There's basically three types of memory:
  *	- data used only by the HCD ... kmalloc is fine
  *	- async and periodic schedules, shared by HC and HCD ... these
  *	  need to use dma_pool or dma_alloc_coherent
@@ -1878,12 +1825,9 @@ static int __maybe_unused fotg210_port_handed_over(struct usb_hcd *hcd,
  * No memory seen by this driver is pageable.
  */
 
-/*-------------------------------------------------------------------------*/
-
 /* Allocate the key transfer structures from the previously allocated pool */
-
 static inline void fotg210_qtd_init(struct fotg210_hcd *fotg210,
-				    struct fotg210_qtd *qtd, dma_addr_t dma)
+		struct fotg210_qtd *qtd, dma_addr_t dma)
 {
 	memset(qtd, 0, sizeof(*qtd));
 	qtd->qtd_dma = dma;
@@ -1894,10 +1838,10 @@ static inline void fotg210_qtd_init(struct fotg210_hcd *fotg210,
 }
 
 static struct fotg210_qtd *fotg210_qtd_alloc(struct fotg210_hcd *fotg210,
-					     gfp_t flags)
+		gfp_t flags)
 {
-	struct fotg210_qtd		*qtd;
-	dma_addr_t		dma;
+	struct fotg210_qtd *qtd;
+	dma_addr_t dma;
 
 	qtd = dma_pool_alloc(fotg210->qtd_pool, flags, &dma);
 	if (qtd != NULL)
@@ -1907,7 +1851,7 @@ static struct fotg210_qtd *fotg210_qtd_alloc(struct fotg210_hcd *fotg210,
 }
 
 static inline void fotg210_qtd_free(struct fotg210_hcd *fotg210,
-				    struct fotg210_qtd *qtd)
+		struct fotg210_qtd *qtd)
 {
 	dma_pool_free(fotg210->qtd_pool, qtd, qtd->qtd_dma);
 }
@@ -1927,10 +1871,10 @@ static void qh_destroy(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 }
 
 static struct fotg210_qh *fotg210_qh_alloc(struct fotg210_hcd *fotg210,
-					   gfp_t flags)
+		gfp_t flags)
 {
-	struct fotg210_qh		*qh;
-	dma_addr_t		dma;
+	struct fotg210_qh *qh;
+	dma_addr_t dma;
 
 	qh = kzalloc(sizeof(*qh), GFP_ATOMIC);
 	if (!qh)
@@ -1958,8 +1902,6 @@ fail:
 	return NULL;
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* The queue heads and transfer descriptors are managed from pools tied
  * to each of the "per device" structures.
  * This is the initialisation and cleanup code.
@@ -1976,23 +1918,19 @@ static void fotg210_mem_cleanup(struct fotg210_hcd *fotg210)
 	fotg210->dummy = NULL;
 
 	/* DMA consistent memory and pools */
-	if (fotg210->qtd_pool)
-		dma_pool_destroy(fotg210->qtd_pool);
+	dma_pool_destroy(fotg210->qtd_pool);
 	fotg210->qtd_pool = NULL;
 
-	if (fotg210->qh_pool) {
-		dma_pool_destroy(fotg210->qh_pool);
-		fotg210->qh_pool = NULL;
-	}
+	dma_pool_destroy(fotg210->qh_pool);
+	fotg210->qh_pool = NULL;
 
-	if (fotg210->itd_pool)
-		dma_pool_destroy(fotg210->itd_pool);
+	dma_pool_destroy(fotg210->itd_pool);
 	fotg210->itd_pool = NULL;
 
 	if (fotg210->periodic)
 		dma_free_coherent(fotg210_to_hcd(fotg210)->self.controller,
-			fotg210->periodic_size * sizeof(u32),
-			fotg210->periodic, fotg210->periodic_dma);
+				fotg210->periodic_size * sizeof(u32),
+				fotg210->periodic, fotg210->periodic_dma);
 	fotg210->periodic = NULL;
 
 	/* shadow periodic table */
@@ -2039,8 +1977,8 @@ static int fotg210_mem_init(struct fotg210_hcd *fotg210, gfp_t flags)
 	/* Hardware periodic table */
 	fotg210->periodic = (__le32 *)
 		dma_alloc_coherent(fotg210_to_hcd(fotg210)->self.controller,
-			fotg210->periodic_size * sizeof(__le32),
-			&fotg210->periodic_dma, 0);
+				fotg210->periodic_size * sizeof(__le32),
+				&fotg210->periodic_dma, 0);
 	if (fotg210->periodic == NULL)
 		goto fail;
 
@@ -2049,7 +1987,7 @@ static int fotg210_mem_init(struct fotg210_hcd *fotg210, gfp_t flags)
 
 	/* software shadow of hardware table */
 	fotg210->pshadow = kcalloc(fotg210->periodic_size, sizeof(void *),
-				   flags);
+			flags);
 	if (fotg210->pshadow != NULL)
 		return 0;
 
@@ -2058,9 +1996,7 @@ fail:
 	fotg210_mem_cleanup(fotg210);
 	return -ENOMEM;
 }
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI hardware queue manipulation ... the core.  QH/QTD manipulation.
+/* EHCI hardware queue manipulation ... the core.  QH/QTD manipulation.
  *
  * Control, bulk, and interrupt traffic all use "qh" lists.  They list "qtd"
  * entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned
@@ -2077,16 +2013,12 @@ fail:
  * buffer low/full speed data so the host collects it at high speed.
  */
 
-/*-------------------------------------------------------------------------*/
-
 /* fill a qtd, returning how much of the buffer we were able to queue up */
-
-static int
-qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd, dma_addr_t buf,
-		  size_t len, int token, int maxpacket)
+static int qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd,
+		dma_addr_t buf, size_t len, int token, int maxpacket)
 {
-	int	i, count;
-	u64	addr = buf;
+	int i, count;
+	u64 addr = buf;
 
 	/* one buffer entry per 4K ... first might be short or unaligned */
 	qtd->hw_buf[0] = cpu_to_hc32(fotg210, (u32)addr);
@@ -2121,11 +2053,8 @@ qtd_fill(struct fotg210_hcd *fotg210, struct fotg210_qtd *qtd, dma_addr_t buf,
 	return count;
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline void
-qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
-	  struct fotg210_qtd *qtd)
+static inline void qh_update(struct fotg210_hcd *fotg210,
+		struct fotg210_qh *qh, struct fotg210_qtd *qtd)
 {
 	struct fotg210_qh_hw *hw = qh->hw;
 
@@ -2141,7 +2070,7 @@ qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
 	 * ever clear it.
 	 */
 	if (!(hw->hw_info1 & cpu_to_hc32(fotg210, QH_TOGGLE_CTL))) {
-		unsigned	is_out, epnum;
+		unsigned is_out, epnum;
 
 		is_out = qh->is_out;
 		epnum = (hc32_to_cpup(fotg210, &hw->hw_info1) >> 8) & 0x0f;
@@ -2158,8 +2087,7 @@ qh_update(struct fotg210_hcd *fotg210, struct fotg210_qh *qh,
  * overlay, so qh->hw_token wrongly becomes inactive/halted), only fault
  * recovery (including urb dequeue) would need software changes to a QH...
  */
-static void
-qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
+static void qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 {
 	struct fotg210_qtd *qtd;
 
@@ -2185,16 +2113,14 @@ qh_refresh(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 		qh_update(fotg210, qh, qtd);
 }
 
-/*-------------------------------------------------------------------------*/
-
 static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
 
 static void fotg210_clear_tt_buffer_complete(struct usb_hcd *hcd,
 		struct usb_host_endpoint *ep)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	struct fotg210_qh		*qh = ep->hcpriv;
-	unsigned long		flags;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	struct fotg210_qh *qh = ep->hcpriv;
+	unsigned long flags;
 
 	spin_lock_irqsave(&fotg210->lock, flags);
 	qh->clearing_tt = 0;
@@ -2205,8 +2131,7 @@ static void fotg210_clear_tt_buffer_complete(struct usb_hcd *hcd,
 }
 
 static void fotg210_clear_tt_buffer(struct fotg210_hcd *fotg210,
-				    struct fotg210_qh *qh,
-				    struct urb *urb, u32 token)
+		struct fotg210_qh *qh, struct urb *urb, u32 token)
 {
 
 	/* If an async split transaction gets an error or is unlinked,
@@ -2217,27 +2142,24 @@ static void fotg210_clear_tt_buffer(struct fotg210_hcd *fotg210,
 	 */
 	if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
 		struct usb_device *tt = urb->dev->tt->hub;
+
 		dev_dbg(&tt->dev,
-			"clear tt buffer port %d, a%d ep%d t%08x\n",
-			urb->dev->ttport, urb->dev->devnum,
-			usb_pipeendpoint(urb->pipe), token);
+				"clear tt buffer port %d, a%d ep%d t%08x\n",
+				urb->dev->ttport, urb->dev->devnum,
+				usb_pipeendpoint(urb->pipe), token);
 
 		if (urb->dev->tt->hub !=
-		    fotg210_to_hcd(fotg210)->self.root_hub) {
+				fotg210_to_hcd(fotg210)->self.root_hub) {
 			if (usb_hub_clear_tt_buffer(urb) == 0)
 				qh->clearing_tt = 1;
 		}
 	}
 }
 
-static int qtd_copy_status(
-	struct fotg210_hcd *fotg210,
-	struct urb *urb,
-	size_t length,
-	u32 token
-)
+static int qtd_copy_status(struct fotg210_hcd *fotg210, struct urb *urb,
+		size_t length, u32 token)
 {
-	int	status = -EINPROGRESS;
+	int status = -EINPROGRESS;
 
 	/* count IN/OUT bytes, not SETUP (even short packets) */
 	if (likely(QTD_PID(token) != 2))
@@ -2274,32 +2196,32 @@ static int qtd_copy_status(
 		} else if (token & QTD_STS_XACT) {
 			/* timeout, bad CRC, wrong PID, etc */
 			fotg210_dbg(fotg210, "devpath %s ep%d%s 3strikes\n",
-				urb->dev->devpath,
-				usb_pipeendpoint(urb->pipe),
-				usb_pipein(urb->pipe) ? "in" : "out");
+					urb->dev->devpath,
+					usb_pipeendpoint(urb->pipe),
+					usb_pipein(urb->pipe) ? "in" : "out");
 			status = -EPROTO;
 		} else {	/* unknown */
 			status = -EPROTO;
 		}
 
 		fotg210_dbg(fotg210,
-			"dev%d ep%d%s qtd token %08x --> status %d\n",
-			usb_pipedevice(urb->pipe),
-			usb_pipeendpoint(urb->pipe),
-			usb_pipein(urb->pipe) ? "in" : "out",
-			token, status);
+				"dev%d ep%d%s qtd token %08x --> status %d\n",
+				usb_pipedevice(urb->pipe),
+				usb_pipeendpoint(urb->pipe),
+				usb_pipein(urb->pipe) ? "in" : "out",
+				token, status);
 	}
 
 	return status;
 }
 
-static void
-fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb, int status)
+static void fotg210_urb_done(struct fotg210_hcd *fotg210, struct urb *urb,
+		int status)
 __releases(fotg210->lock)
 __acquires(fotg210->lock)
 {
 	if (likely(urb->hcpriv != NULL)) {
-		struct fotg210_qh	*qh = (struct fotg210_qh *) urb->hcpriv;
+		struct fotg210_qh *qh = (struct fotg210_qh *) urb->hcpriv;
 
 		/* S-mask in a QH means it's an interrupt urb */
 		if ((qh->hw->hw_info2 & cpu_to_hc32(fotg210, QH_SMASK)) != 0) {
@@ -2320,12 +2242,12 @@ __acquires(fotg210->lock)
 
 #ifdef FOTG210_URB_TRACE
 	fotg210_dbg(fotg210,
-		"%s %s urb %p ep%d%s status %d len %d/%d\n",
-		__func__, urb->dev->devpath, urb,
-		usb_pipeendpoint(urb->pipe),
-		usb_pipein(urb->pipe) ? "in" : "out",
-		status,
-		urb->actual_length, urb->transfer_buffer_length);
+			"%s %s urb %p ep%d%s status %d len %d/%d\n",
+			__func__, urb->dev->devpath, urb,
+			usb_pipeendpoint(urb->pipe),
+			usb_pipein(urb->pipe) ? "in" : "out",
+			status,
+			urb->actual_length, urb->transfer_buffer_length);
 #endif
 
 	/* complete() can reenter this HCD */
@@ -2337,21 +2259,20 @@ __acquires(fotg210->lock)
 
 static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh);
 
-/*
- * Process and free completed qtds for a qh, returning URBs to drivers.
+/* Process and free completed qtds for a qh, returning URBs to drivers.
  * Chases up to qh->hw_current.  Returns number of completions called,
  * indicating how much "real" work we did.
  */
-static unsigned
-qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
+static unsigned qh_completions(struct fotg210_hcd *fotg210,
+		struct fotg210_qh *qh)
 {
-	struct fotg210_qtd		*last, *end = qh->dummy;
-	struct list_head	*entry, *tmp;
-	int			last_status;
-	int			stopped;
-	unsigned		count = 0;
-	u8			state;
-	struct fotg210_qh_hw	*hw = qh->hw;
+	struct fotg210_qtd *last, *end = qh->dummy;
+	struct list_head *entry, *tmp;
+	int last_status;
+	int stopped;
+	unsigned count = 0;
+	u8 state;
+	struct fotg210_qh_hw *hw = qh->hw;
 
 	if (unlikely(list_empty(&qh->qtd_list)))
 		return count;
@@ -2370,7 +2291,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 	qh->qh_state = QH_STATE_COMPLETING;
 	stopped = (state == QH_STATE_IDLE);
 
- rescan:
+rescan:
 	last = NULL;
 	last_status = -EINPROGRESS;
 	qh->needs_rescan = 0;
@@ -2381,9 +2302,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 	 * if queue is stopped, handles unlinks.
 	 */
 	list_for_each_safe(entry, tmp, &qh->qtd_list) {
-		struct fotg210_qtd	*qtd;
-		struct urb	*urb;
-		u32		token = 0;
+		struct fotg210_qtd *qtd;
+		struct urb *urb;
+		u32 token = 0;
 
 		qtd = list_entry(entry, struct fotg210_qtd, qtd_list);
 		urb = qtd->urb;
@@ -2392,7 +2313,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 		if (last) {
 			if (likely(last->urb != urb)) {
 				fotg210_urb_done(fotg210, last->urb,
-						 last_status);
+						last_status);
 				count++;
 				last_status = -EINPROGRESS;
 			}
@@ -2409,20 +2330,17 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 		token = hc32_to_cpu(fotg210, qtd->hw_token);
 
 		/* always clean up qtds the hc de-activated */
- retry_xacterr:
+retry_xacterr:
 		if ((token & QTD_STS_ACTIVE) == 0) {
 
 			/* Report Data Buffer Error: non-fatal but useful */
 			if (token & QTD_STS_DBE)
 				fotg210_dbg(fotg210,
 					"detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-					urb,
-					usb_endpoint_num(&urb->ep->desc),
+					urb, usb_endpoint_num(&urb->ep->desc),
 					usb_endpoint_dir_in(&urb->ep->desc)
 						? "in" : "out",
-					urb->transfer_buffer_length,
-					qtd,
-					qh);
+					urb->transfer_buffer_length, qtd, qh);
 
 			/* on STALL, error, and short reads this urb must
 			 * complete and all its qtds must be recycled.
@@ -2433,12 +2351,14 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 				 * reach the software xacterr limit
 				 */
 				if ((token & QTD_STS_XACT) &&
-					QTD_CERR(token) == 0 &&
-					++qh->xacterrs < QH_XACTERR_MAX &&
-					!urb->unlinked) {
+						QTD_CERR(token) == 0 &&
+						++qh->xacterrs < QH_XACTERR_MAX &&
+						!urb->unlinked) {
 					fotg210_dbg(fotg210,
-	"detected XactErr len %zu/%zu retry %d\n",
-	qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
+						"detected XactErr len %zu/%zu retry %d\n",
+						qtd->length - QTD_LENGTH(token),
+						qtd->length,
+						qh->xacterrs);
 
 					/* reset the token in the qtd and the
 					 * qh overlay (which still contains
@@ -2466,9 +2386,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 			 * URB_SHORT_NOT_OK was set so the driver submitting
 			 * the urbs could clean it up.
 			 */
-			} else if (IS_SHORT_READ(token)
-					&& !(qtd->hw_alt_next
-						& FOTG210_LIST_END(fotg210))) {
+			} else if (IS_SHORT_READ(token) &&
+					!(qtd->hw_alt_next &
+					FOTG210_LIST_END(fotg210))) {
 				stopped = 1;
 			}
 
@@ -2492,9 +2412,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 				continue;
 
 			/* qh unlinked; token in overlay may be most current */
-			if (state == QH_STATE_IDLE
-					&& cpu_to_hc32(fotg210, qtd->qtd_dma)
-						== hw->hw_current) {
+			if (state == QH_STATE_IDLE &&
+					cpu_to_hc32(fotg210, qtd->qtd_dma)
+					== hw->hw_current) {
 				token = hc32_to_cpu(fotg210, hw->hw_token);
 
 				/* An unlink may leave an incomplete
@@ -2502,7 +2422,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 				 * We have to clear it.
 				 */
 				fotg210_clear_tt_buffer(fotg210, qh, urb,
-							token);
+						token);
 			}
 		}
 
@@ -2516,9 +2436,9 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 		if (last_status == -EINPROGRESS) {
 			last_status = qtd_copy_status(fotg210, urb,
 					qtd->length, token);
-			if (last_status == -EREMOTEIO
-					&& (qtd->hw_alt_next
-						& FOTG210_LIST_END(fotg210)))
+			if (last_status == -EREMOTEIO &&
+					(qtd->hw_alt_next &
+					FOTG210_LIST_END(fotg210)))
 				last_status = -EINPROGRESS;
 
 			/* As part of low/full-speed endpoint-halt processing
@@ -2537,7 +2457,7 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 				 */
 				if (last_status != -EPIPE)
 					fotg210_clear_tt_buffer(fotg210, qh,
-								urb, token);
+							urb, token);
 			}
 		}
 
@@ -2615,26 +2535,21 @@ qh_completions(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 	return count;
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* high bandwidth multiplier, as encoded in highspeed endpoint descriptors */
 #define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
 /* ... and packet size, for any kind of endpoint descriptor */
 #define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
 
-/*
- * reverse of qh_urb_transaction:  free a list of TDs.
+/* reverse of qh_urb_transaction:  free a list of TDs.
  * used for cleanup after errors, before HC sees an URB's TDs.
  */
-static void qtd_list_free(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	struct list_head	*qtd_list
-) {
-	struct list_head	*entry, *temp;
+static void qtd_list_free(struct fotg210_hcd *fotg210, struct urb *urb,
+		struct list_head *qtd_list)
+{
+	struct list_head *entry, *temp;
 
 	list_for_each_safe(entry, temp, qtd_list) {
-		struct fotg210_qtd	*qtd;
+		struct fotg210_qtd *qtd;
 
 		qtd = list_entry(entry, struct fotg210_qtd, qtd_list);
 		list_del(&qtd->qtd_list);
@@ -2642,23 +2557,18 @@ static void qtd_list_free(
 	}
 }
 
-/*
- * create a list of filled qtds for this URB; won't link into qh.
+/* create a list of filled qtds for this URB; won't link into qh.
  */
-static struct list_head *
-qh_urb_transaction(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	struct list_head	*head,
-	gfp_t			flags
-) {
-	struct fotg210_qtd		*qtd, *qtd_prev;
-	dma_addr_t		buf;
-	int			len, this_sg_len, maxpacket;
-	int			is_input;
-	u32			token;
-	int			i;
-	struct scatterlist	*sg;
+static struct list_head *qh_urb_transaction(struct fotg210_hcd *fotg210,
+		struct urb *urb, struct list_head *head, gfp_t flags)
+{
+	struct fotg210_qtd *qtd, *qtd_prev;
+	dma_addr_t buf;
+	int len, this_sg_len, maxpacket;
+	int is_input;
+	u32 token;
+	int i;
+	struct scatterlist *sg;
 
 	/*
 	 * URBs map to sequences of QTDs:  one logical transaction
@@ -2768,8 +2678,8 @@ qh_urb_transaction(
 	 * have the alt_next mechanism keep the queue running after the
 	 * last data qtd (the only one, for control and most other cases).
 	 */
-	if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0
-				|| usb_pipecontrol(urb->pipe)))
+	if (likely((urb->transfer_flags & URB_SHORT_NOT_OK) == 0 ||
+			usb_pipecontrol(urb->pipe)))
 		qtd->hw_alt_next = FOTG210_LIST_END(fotg210);
 
 	/*
@@ -2778,7 +2688,7 @@ qh_urb_transaction(
 	 * (zero length).
 	 */
 	if (likely(urb->transfer_buffer_length != 0)) {
-		int	one_more = 0;
+		int one_more = 0;
 
 		if (usb_pipecontrol(urb->pipe)) {
 			one_more = 1;
@@ -2813,9 +2723,7 @@ cleanup:
 	return NULL;
 }
 
-/*-------------------------------------------------------------------------*/
-/*
- * Would be best to create all qh's from config descriptors,
+/* Would be best to create all qh's from config descriptors,
  * when each interface/altsetting is established.  Unlink
  * any previous qh and cancel its urbs first; endpoints are
  * implicitly reset then (data toggle too).
@@ -2823,26 +2731,22 @@ cleanup:
 */
 
 
-/*
- * Each QH holds a qtd list; a QH is used for everything except iso.
+/* Each QH holds a qtd list; a QH is used for everything except iso.
  *
  * For interrupt urbs, the scheduler must set the microframe scheduling
  * mask(s) each time the QH gets scheduled.  For highspeed, that's
  * just one microframe in the s-mask.  For split interrupt transactions
  * there are additional complications: c-mask, maybe FSTNs.
  */
-static struct fotg210_qh *
-qh_make(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	gfp_t			flags
-) {
-	struct fotg210_qh		*qh = fotg210_qh_alloc(fotg210, flags);
-	u32			info1 = 0, info2 = 0;
-	int			is_input, type;
-	int			maxp = 0;
-	struct usb_tt		*tt = urb->dev->tt;
-	struct fotg210_qh_hw	*hw;
+static struct fotg210_qh *qh_make(struct fotg210_hcd *fotg210, struct urb *urb,
+		gfp_t flags)
+{
+	struct fotg210_qh *qh = fotg210_qh_alloc(fotg210, flags);
+	u32 info1 = 0, info2 = 0;
+	int is_input, type;
+	int maxp = 0;
+	struct usb_tt *tt = urb->dev->tt;
+	struct fotg210_qh_hw *hw;
 
 	if (!qh)
 		return qh;
@@ -2862,7 +2766,7 @@ qh_make(
 	 */
 	if (max_packet(maxp) > 1024) {
 		fotg210_dbg(fotg210, "bogus qh maxpacket %d\n",
-			    max_packet(maxp));
+				max_packet(maxp));
 		goto done;
 	}
 
@@ -2896,7 +2800,7 @@ qh_make(
 				urb->interval = qh->period << 3;
 			}
 		} else {
-			int		think_time;
+			int think_time;
 
 			/* gap is f(FS/LS transfer times) */
 			qh->gap_uf = 1 + usb_calc_bus_time(urb->dev->speed,
@@ -2986,7 +2890,7 @@ qh_make(
 		break;
 	default:
 		fotg210_dbg(fotg210, "bogus dev %p speed %d\n", urb->dev,
-			urb->dev->speed);
+				urb->dev->speed);
 done:
 		qh_destroy(fotg210, qh);
 		return NULL;
@@ -3005,8 +2909,6 @@ done:
 	return qh;
 }
 
-/*-------------------------------------------------------------------------*/
-
 static void enable_async(struct fotg210_hcd *fotg210)
 {
 	if (fotg210->async_count++)
@@ -3036,8 +2938,8 @@ static void disable_async(struct fotg210_hcd *fotg210)
 
 static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 {
-	__hc32		dma = QH_NEXT(fotg210, qh->qh_dma);
-	struct fotg210_qh	*head;
+	__hc32 dma = QH_NEXT(fotg210, qh->qh_dma);
+	struct fotg210_qh *head;
 
 	/* Don't link a QH if there's a Clear-TT-Buffer pending */
 	if (unlikely(qh->clearing_tt))
@@ -3064,24 +2966,17 @@ static void qh_link_async(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 	enable_async(fotg210);
 }
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * For control/bulk/interrupt, return QH with these TDs appended.
+/* For control/bulk/interrupt, return QH with these TDs appended.
  * Allocates and initializes the QH if necessary.
  * Returns null if it can't allocate a QH it needs to.
  * If the QH has TDs (urbs) already, that's great.
  */
-static struct fotg210_qh *qh_append_tds(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	int			epnum,
-	void			**ptr
-)
+static struct fotg210_qh *qh_append_tds(struct fotg210_hcd *fotg210,
+		struct urb *urb, struct list_head *qtd_list,
+		int epnum, void **ptr)
 {
-	struct fotg210_qh		*qh = NULL;
-	__hc32			qh_addr_mask = cpu_to_hc32(fotg210, 0x7f);
+	struct fotg210_qh *qh = NULL;
+	__hc32 qh_addr_mask = cpu_to_hc32(fotg210, 0x7f);
 
 	qh = (struct fotg210_qh *) *ptr;
 	if (unlikely(qh == NULL)) {
@@ -3090,7 +2985,7 @@ static struct fotg210_qh *qh_append_tds(
 		*ptr = qh;
 	}
 	if (likely(qh != NULL)) {
-		struct fotg210_qtd	*qtd;
+		struct fotg210_qtd *qtd;
 
 		if (unlikely(list_empty(qtd_list)))
 			qtd = NULL;
@@ -3109,9 +3004,9 @@ static struct fotg210_qh *qh_append_tds(
 		 * only hc or qh_refresh() ever modify the overlay.
 		 */
 		if (likely(qtd != NULL)) {
-			struct fotg210_qtd		*dummy;
-			dma_addr_t		dma;
-			__hc32			token;
+			struct fotg210_qtd *dummy;
+			dma_addr_t dma;
+			__hc32 token;
 
 			/* to avoid racing the HC, use the dummy td instead of
 			 * the first td of our list (becomes new dummy).  both
@@ -3150,32 +3045,28 @@ static struct fotg210_qh *qh_append_tds(
 	return qh;
 }
 
-/*-------------------------------------------------------------------------*/
-
-static int
-submit_async(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	gfp_t			mem_flags
-) {
-	int			epnum;
-	unsigned long		flags;
-	struct fotg210_qh		*qh = NULL;
-	int			rc;
+static int submit_async(struct fotg210_hcd *fotg210, struct urb *urb,
+		struct list_head *qtd_list, gfp_t mem_flags)
+{
+	int epnum;
+	unsigned long flags;
+	struct fotg210_qh *qh = NULL;
+	int rc;
 
 	epnum = urb->ep->desc.bEndpointAddress;
 
 #ifdef FOTG210_URB_TRACE
 	{
 		struct fotg210_qtd *qtd;
+
 		qtd = list_entry(qtd_list->next, struct fotg210_qtd, qtd_list);
 		fotg210_dbg(fotg210,
-			 "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-			 __func__, urb->dev->devpath, urb,
-			 epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
-			 urb->transfer_buffer_length,
-			 qtd, urb->ep->hcpriv);
+				"%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
+				__func__, urb->dev->devpath, urb,
+				epnum & 0x0f, (epnum & USB_DIR_IN)
+					? "in" : "out",
+				urb->transfer_buffer_length,
+				qtd, urb->ep->hcpriv);
 	}
 #endif
 
@@ -3200,19 +3091,17 @@ submit_async(
 	 */
 	if (likely(qh->qh_state == QH_STATE_IDLE))
 		qh_link_async(fotg210, qh);
- done:
+done:
 	spin_unlock_irqrestore(&fotg210->lock, flags);
 	if (unlikely(qh == NULL))
 		qtd_list_free(fotg210, urb, qtd_list);
 	return rc;
 }
 
-/*-------------------------------------------------------------------------*/
-
 static void single_unlink_async(struct fotg210_hcd *fotg210,
-				struct fotg210_qh *qh)
+		struct fotg210_qh *qh)
 {
-	struct fotg210_qh		*prev;
+	struct fotg210_qh *prev;
 
 	/* Add to the end of the list of QHs waiting for the next IAAD */
 	qh->qh_state = QH_STATE_UNLINK;
@@ -3260,7 +3149,7 @@ static void start_iaa_cycle(struct fotg210_hcd *fotg210, bool nested)
 				&fotg210->regs->command);
 		fotg210_readl(fotg210, &fotg210->regs->command);
 		fotg210_enable_event(fotg210, FOTG210_HRTIMER_IAA_WATCHDOG,
-				     true);
+				true);
 	}
 }
 
@@ -3268,10 +3157,10 @@ static void start_iaa_cycle(struct fotg210_hcd *fotg210, bool nested)
 
 static void end_unlink_async(struct fotg210_hcd *fotg210)
 {
-	struct fotg210_qh		*qh;
+	struct fotg210_qh *qh;
 
 	/* Process the idle QHs */
- restart:
+restart:
 	fotg210->async_unlinking = true;
 	while (fotg210->async_iaa) {
 		qh = fotg210->async_iaa;
@@ -3326,7 +3215,7 @@ static void unlink_empty_async(struct fotg210_hcd *fotg210)
 	/* QHs that haven't been empty for long enough will be handled later */
 	if (check_unlinks_later) {
 		fotg210_enable_event(fotg210, FOTG210_HRTIMER_ASYNC_UNLINKS,
-				     true);
+				true);
 		++fotg210->async_unlink_cycle;
 	}
 }
@@ -3335,7 +3224,7 @@ static void unlink_empty_async(struct fotg210_hcd *fotg210)
 /* caller must own fotg210->lock */
 
 static void start_unlink_async(struct fotg210_hcd *fotg210,
-			       struct fotg210_qh *qh)
+		struct fotg210_qh *qh)
 {
 	/*
 	 * If the QH isn't linked then there's nothing we can do
@@ -3352,18 +3241,16 @@ static void start_unlink_async(struct fotg210_hcd *fotg210,
 	start_iaa_cycle(fotg210, false);
 }
 
-/*-------------------------------------------------------------------------*/
-
 static void scan_async(struct fotg210_hcd *fotg210)
 {
-	struct fotg210_qh		*qh;
-	bool			check_unlinks_later = false;
+	struct fotg210_qh *qh;
+	bool check_unlinks_later = false;
 
 	fotg210->qh_scan_next = fotg210->async->qh_next.qh;
 	while (fotg210->qh_scan_next) {
 		qh = fotg210->qh_scan_next;
 		fotg210->qh_scan_next = qh->qh_next.qh;
- rescan:
+rescan:
 		/* clean any finished work for this qh */
 		if (!list_empty(&qh->qtd_list)) {
 			int temp;
@@ -3395,15 +3282,13 @@ static void scan_async(struct fotg210_hcd *fotg210)
 	 */
 	if (check_unlinks_later && fotg210->rh_state == FOTG210_RH_RUNNING &&
 			!(fotg210->enabled_hrtimer_events &
-				BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) {
+			BIT(FOTG210_HRTIMER_ASYNC_UNLINKS))) {
 		fotg210_enable_event(fotg210,
-				     FOTG210_HRTIMER_ASYNC_UNLINKS, true);
+				FOTG210_HRTIMER_ASYNC_UNLINKS, true);
 		++fotg210->async_unlink_cycle;
 	}
 }
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI scheduled transaction support:  interrupt, iso, split iso
+/* EHCI scheduled transaction support:  interrupt, iso, split iso
  * These are called "periodic" transactions in the EHCI spec.
  *
  * Note that for interrupt transfers, the QH/QTD manipulation is shared
@@ -3414,19 +3299,14 @@ static void scan_async(struct fotg210_hcd *fotg210)
  * It keeps track of every ITD (or SITD) that's linked, and holds enough
  * pre-calculated schedule data to make appending to the queue be quick.
  */
-
 static int fotg210_get_frame(struct usb_hcd *hcd);
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * periodic_next_shadow - return "next" pointer on shadow list
+/* periodic_next_shadow - return "next" pointer on shadow list
  * @periodic: host pointer to qh/itd
  * @tag: hardware tag for type of this record
  */
-static union fotg210_shadow *
-periodic_next_shadow(struct fotg210_hcd *fotg210,
-		     union fotg210_shadow *periodic, __hc32 tag)
+static union fotg210_shadow *periodic_next_shadow(struct fotg210_hcd *fotg210,
+		union fotg210_shadow *periodic, __hc32 tag)
 {
 	switch (hc32_to_cpu(fotg210, tag)) {
 	case Q_TYPE_QH:
@@ -3438,9 +3318,8 @@ periodic_next_shadow(struct fotg210_hcd *fotg210,
 	}
 }
 
-static __hc32 *
-shadow_next_periodic(struct fotg210_hcd *fotg210,
-		     union fotg210_shadow *periodic, __hc32 tag)
+static __hc32 *shadow_next_periodic(struct fotg210_hcd *fotg210,
+		union fotg210_shadow *periodic, __hc32 tag)
 {
 	switch (hc32_to_cpu(fotg210, tag)) {
 	/* our fotg210_shadow.qh is actually software part */
@@ -3454,11 +3333,11 @@ shadow_next_periodic(struct fotg210_hcd *fotg210,
 
 /* caller must hold fotg210->lock */
 static void periodic_unlink(struct fotg210_hcd *fotg210, unsigned frame,
-			    void *ptr)
+		void *ptr)
 {
-	union fotg210_shadow	*prev_p = &fotg210->pshadow[frame];
-	__hc32			*hw_p = &fotg210->periodic[frame];
-	union fotg210_shadow	here = *prev_p;
+	union fotg210_shadow *prev_p = &fotg210->pshadow[frame];
+	__hc32 *hw_p = &fotg210->periodic[frame];
+	union fotg210_shadow here = *prev_p;
 
 	/* find predecessor of "ptr"; hw and shadow lists are in sync */
 	while (here.ptr && here.ptr != ptr) {
@@ -3479,17 +3358,17 @@ static void periodic_unlink(struct fotg210_hcd *fotg210, unsigned frame,
 			Q_NEXT_TYPE(fotg210, *hw_p));
 
 	*hw_p = *shadow_next_periodic(fotg210, &here,
-				Q_NEXT_TYPE(fotg210, *hw_p));
+			Q_NEXT_TYPE(fotg210, *hw_p));
 }
 
 /* how many of the uframe's 125 usecs are allocated? */
-static unsigned short
-periodic_usecs(struct fotg210_hcd *fotg210, unsigned frame, unsigned uframe)
+static unsigned short periodic_usecs(struct fotg210_hcd *fotg210,
+		unsigned frame, unsigned uframe)
 {
-	__hc32			*hw_p = &fotg210->periodic[frame];
-	union fotg210_shadow	*q = &fotg210->pshadow[frame];
-	unsigned		usecs = 0;
-	struct fotg210_qh_hw	*hw;
+	__hc32 *hw_p = &fotg210->periodic[frame];
+	union fotg210_shadow *q = &fotg210->pshadow[frame];
+	unsigned usecs = 0;
+	struct fotg210_qh_hw *hw;
 
 	while (q->ptr) {
 		switch (hc32_to_cpu(fotg210, Q_NEXT_TYPE(fotg210, *hw_p))) {
@@ -3526,12 +3405,10 @@ periodic_usecs(struct fotg210_hcd *fotg210, unsigned frame, unsigned uframe)
 	}
 	if (usecs > fotg210->uframe_periodic_max)
 		fotg210_err(fotg210, "uframe %d sched overrun: %d usecs\n",
-			frame * 8 + uframe, usecs);
+				frame * 8 + uframe, usecs);
 	return usecs;
 }
 
-/*-------------------------------------------------------------------------*/
-
 static int same_tt(struct usb_device *dev1, struct usb_device *dev2)
 {
 	if (!dev1->tt || !dev2->tt)
@@ -3548,13 +3425,8 @@ static int same_tt(struct usb_device *dev1, struct usb_device *dev2)
  * for a periodic transfer starting at the specified frame, using
  * all the uframes in the mask.
  */
-static int tt_no_collision(
-	struct fotg210_hcd		*fotg210,
-	unsigned		period,
-	struct usb_device	*dev,
-	unsigned		frame,
-	u32			uf_mask
-)
+static int tt_no_collision(struct fotg210_hcd *fotg210, unsigned period,
+		struct usb_device *dev, unsigned frame, u32 uf_mask)
 {
 	if (period == 0)	/* error */
 		return 0;
@@ -3564,9 +3436,9 @@ static int tt_no_collision(
 	 * calling convention doesn't make that distinction.
 	 */
 	for (; frame < fotg210->periodic_size; frame += period) {
-		union fotg210_shadow	here;
-		__hc32			type;
-		struct fotg210_qh_hw	*hw;
+		union fotg210_shadow here;
+		__hc32 type;
+		struct fotg210_qh_hw *hw;
 
 		here = fotg210->pshadow[frame];
 		type = Q_NEXT_TYPE(fotg210, fotg210->periodic[frame]);
@@ -3579,7 +3451,7 @@ static int tt_no_collision(
 			case Q_TYPE_QH:
 				hw = here.qh->hw;
 				if (same_tt(dev, here.qh->dev)) {
-					u32		mask;
+					u32 mask;
 
 					mask = hc32_to_cpu(fotg210,
 							hw->hw_info2);
@@ -3594,8 +3466,8 @@ static int tt_no_collision(
 			/* case Q_TYPE_FSTN: */
 			default:
 				fotg210_dbg(fotg210,
-					"periodic frame %d bogus type %d\n",
-					frame, type);
+						"periodic frame %d bogus type %d\n",
+						frame, type);
 			}
 
 			/* collision or error */
@@ -3607,8 +3479,6 @@ static int tt_no_collision(
 	return 1;
 }
 
-/*-------------------------------------------------------------------------*/
-
 static void enable_periodic(struct fotg210_hcd *fotg210)
 {
 	if (fotg210->periodic_count++)
@@ -3632,8 +3502,6 @@ static void disable_periodic(struct fotg210_hcd *fotg210)
 	fotg210_poll_PSS(fotg210);
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* periodic schedule slots have iso tds (normal or split) first, then a
  * sparse tree for active interrupt transfers.
  *
@@ -3642,24 +3510,24 @@ static void disable_periodic(struct fotg210_hcd *fotg210)
  */
 static void qh_link_periodic(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 {
-	unsigned	i;
-	unsigned	period = qh->period;
+	unsigned i;
+	unsigned period = qh->period;
 
 	dev_dbg(&qh->dev->dev,
-		"link qh%d-%04x/%p start %d [%d/%d us]\n",
-		period, hc32_to_cpup(fotg210, &qh->hw->hw_info2)
-			& (QH_CMASK | QH_SMASK),
-		qh, qh->start, qh->usecs, qh->c_usecs);
+			"link qh%d-%04x/%p start %d [%d/%d us]\n", period,
+			hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
+			(QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs,
+			qh->c_usecs);
 
 	/* high bandwidth, or otherwise every microframe */
 	if (period == 0)
 		period = 1;
 
 	for (i = qh->start; i < fotg210->periodic_size; i += period) {
-		union fotg210_shadow	*prev = &fotg210->pshadow[i];
-		__hc32			*hw_p = &fotg210->periodic[i];
-		union fotg210_shadow	here = *prev;
-		__hc32			type = 0;
+		union fotg210_shadow *prev = &fotg210->pshadow[i];
+		__hc32 *hw_p = &fotg210->periodic[i];
+		union fotg210_shadow here = *prev;
+		__hc32 type = 0;
 
 		/* skip the iso nodes at list head */
 		while (here.ptr) {
@@ -3707,10 +3575,10 @@ static void qh_link_periodic(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 }
 
 static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
-			       struct fotg210_qh *qh)
+		struct fotg210_qh *qh)
 {
-	unsigned	i;
-	unsigned	period;
+	unsigned i;
+	unsigned period;
 
 	/*
 	 * If qh is for a low/full-speed device, simply unlinking it
@@ -3741,10 +3609,10 @@ static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
 		: (qh->usecs * 8);
 
 	dev_dbg(&qh->dev->dev,
-		"unlink qh%d-%04x/%p start %d [%d/%d us]\n",
-		qh->period,
-		hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
-		(QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs, qh->c_usecs);
+			"unlink qh%d-%04x/%p start %d [%d/%d us]\n",
+			qh->period, hc32_to_cpup(fotg210, &qh->hw->hw_info2) &
+			(QH_CMASK | QH_SMASK), qh, qh->start, qh->usecs,
+			qh->c_usecs);
 
 	/* qh->qh_next still "live" to HC */
 	qh->qh_state = QH_STATE_UNLINK;
@@ -3757,7 +3625,7 @@ static void qh_unlink_periodic(struct fotg210_hcd *fotg210,
 }
 
 static void start_unlink_intr(struct fotg210_hcd *fotg210,
-			      struct fotg210_qh *qh)
+		struct fotg210_qh *qh)
 {
 	/* If the QH isn't linked then there's nothing we can do
 	 * unless we were called during a giveback, in which case
@@ -3794,15 +3662,15 @@ static void start_unlink_intr(struct fotg210_hcd *fotg210,
 		fotg210_handle_intr_unlinks(fotg210);
 	else if (fotg210->intr_unlink == qh) {
 		fotg210_enable_event(fotg210, FOTG210_HRTIMER_UNLINK_INTR,
-				     true);
+				true);
 		++fotg210->intr_unlink_cycle;
 	}
 }
 
 static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 {
-	struct fotg210_qh_hw	*hw = qh->hw;
-	int			rc;
+	struct fotg210_qh_hw *hw = qh->hw;
+	int rc;
 
 	qh->qh_state = QH_STATE_IDLE;
 	hw->hw_next = FOTG210_LIST_END(fotg210);
@@ -3811,7 +3679,7 @@ static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 
 	/* reschedule QH iff another request is queued */
 	if (!list_empty(&qh->qtd_list) &&
-	    fotg210->rh_state == FOTG210_RH_RUNNING) {
+			fotg210->rh_state == FOTG210_RH_RUNNING) {
 		rc = qh_schedule(fotg210, qh);
 
 		/* An error here likely indicates handshake failure
@@ -3830,16 +3698,10 @@ static void end_unlink_intr(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 	disable_periodic(fotg210);
 }
 
-/*-------------------------------------------------------------------------*/
-
-static int check_period(
-	struct fotg210_hcd *fotg210,
-	unsigned	frame,
-	unsigned	uframe,
-	unsigned	period,
-	unsigned	usecs
-) {
-	int		claimed;
+static int check_period(struct fotg210_hcd *fotg210, unsigned frame,
+		unsigned uframe, unsigned period, unsigned usecs)
+{
+	int claimed;
 
 	/* complete split running into next frame?
 	 * given FSTN support, we could sometimes check...
@@ -3857,7 +3719,7 @@ static int check_period(
 		do {
 			for (uframe = 0; uframe < 7; uframe++) {
 				claimed = periodic_usecs(fotg210, frame,
-							 uframe);
+						uframe);
 				if (claimed > usecs)
 					return 0;
 			}
@@ -3876,16 +3738,11 @@ static int check_period(
 	return 1;
 }
 
-static int check_intr_schedule(
-	struct fotg210_hcd		*fotg210,
-	unsigned		frame,
-	unsigned		uframe,
-	const struct fotg210_qh	*qh,
-	__hc32			*c_maskp
-)
+static int check_intr_schedule(struct fotg210_hcd *fotg210, unsigned frame,
+		unsigned uframe, const struct fotg210_qh *qh, __hc32 *c_maskp)
 {
-	int		retval = -ENOSPC;
-	u8		mask = 0;
+	int retval = -ENOSPC;
+	u8 mask = 0;
 
 	if (qh->c_usecs && uframe >= 6)		/* FSTN territory? */
 		goto done;
@@ -3911,10 +3768,10 @@ static int check_intr_schedule(
 	mask |= 1 << uframe;
 	if (tt_no_collision(fotg210, qh->period, qh->dev, frame, mask)) {
 		if (!check_period(fotg210, frame, uframe + qh->gap_uf + 1,
-					qh->period, qh->c_usecs))
+				qh->period, qh->c_usecs))
 			goto done;
 		if (!check_period(fotg210, frame, uframe + qh->gap_uf,
-					qh->period, qh->c_usecs))
+				qh->period, qh->c_usecs))
 			goto done;
 		retval = 0;
 	}
@@ -3927,11 +3784,11 @@ done:
  */
 static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 {
-	int		status;
-	unsigned	uframe;
-	__hc32		c_mask;
-	unsigned	frame;		/* 0..(qh->period - 1), or NO_FRAME */
-	struct fotg210_qh_hw	*hw = qh->hw;
+	int status;
+	unsigned uframe;
+	__hc32 c_mask;
+	unsigned frame;	/* 0..(qh->period - 1), or NO_FRAME */
+	struct fotg210_qh_hw *hw = qh->hw;
 
 	qh_refresh(fotg210, qh);
 	hw->hw_next = FOTG210_LIST_END(fotg210);
@@ -3954,7 +3811,7 @@ static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 	if (status) {
 		/* "normal" case, uframing flexible except with splits */
 		if (qh->period) {
-			int		i;
+			int i;
 
 			for (i = qh->period; status && i > 0; --i) {
 				frame = ++fotg210->random_frame % qh->period;
@@ -3971,7 +3828,7 @@ static int qh_schedule(struct fotg210_hcd *fotg210, struct fotg210_qh *qh)
 		} else {
 			frame = 0;
 			status = check_intr_schedule(fotg210, 0, 0, qh,
-						     &c_mask);
+					&c_mask);
 		}
 		if (status)
 			goto done;
@@ -3992,17 +3849,14 @@ done:
 	return status;
 }
 
-static int intr_submit(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	gfp_t			mem_flags
-) {
-	unsigned		epnum;
-	unsigned long		flags;
-	struct fotg210_qh		*qh;
-	int			status;
-	struct list_head	empty;
+static int intr_submit(struct fotg210_hcd *fotg210, struct urb *urb,
+		struct list_head *qtd_list, gfp_t mem_flags)
+{
+	unsigned epnum;
+	unsigned long flags;
+	struct fotg210_qh *qh;
+	int status;
+	struct list_head empty;
 
 	/* get endpoint and transfer/schedule data */
 	epnum = urb->ep->desc.bEndpointAddress;
@@ -4050,11 +3904,11 @@ done_not_linked:
 
 static void scan_intr(struct fotg210_hcd *fotg210)
 {
-	struct fotg210_qh		*qh;
+	struct fotg210_qh *qh;
 
 	list_for_each_entry_safe(qh, fotg210->qh_scan_next,
-				 &fotg210->intr_qh_list, intr_node) {
- rescan:
+			&fotg210->intr_qh_list, intr_node) {
+rescan:
 		/* clean any finished work for this qh */
 		if (!list_empty(&qh->qtd_list)) {
 			int temp;
@@ -4069,7 +3923,7 @@ static void scan_intr(struct fotg210_hcd *fotg210)
 			temp = qh_completions(fotg210, qh);
 			if (unlikely(qh->needs_rescan ||
 					(list_empty(&qh->qtd_list) &&
-					 qh->qh_state == QH_STATE_LINKED)))
+					qh->qh_state == QH_STATE_LINKED)))
 				start_unlink_intr(fotg210, qh);
 			else if (temp != 0)
 				goto rescan;
@@ -4077,12 +3931,9 @@ static void scan_intr(struct fotg210_hcd *fotg210)
 	}
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* fotg210_iso_stream ops work with both ITD and SITD */
 
-static struct fotg210_iso_stream *
-iso_stream_alloc(gfp_t mem_flags)
+static struct fotg210_iso_stream *iso_stream_alloc(gfp_t mem_flags)
 {
 	struct fotg210_iso_stream *stream;
 
@@ -4095,20 +3946,15 @@ iso_stream_alloc(gfp_t mem_flags)
 	return stream;
 }
 
-static void
-iso_stream_init(
-	struct fotg210_hcd		*fotg210,
-	struct fotg210_iso_stream	*stream,
-	struct usb_device	*dev,
-	int			pipe,
-	unsigned		interval
-)
+static void iso_stream_init(struct fotg210_hcd *fotg210,
+		struct fotg210_iso_stream *stream, struct usb_device *dev,
+		int pipe, unsigned interval)
 {
-	u32			buf1;
-	unsigned		epnum, maxp;
-	int			is_input;
-	long			bandwidth;
-	unsigned		multi;
+	u32 buf1;
+	unsigned epnum, maxp;
+	int is_input;
+	long bandwidth;
+	unsigned multi;
 
 	/*
 	 * this might be a "high bandwidth" highspeed endpoint,
@@ -4153,13 +3999,13 @@ iso_stream_init(
 	stream->maxp = maxp;
 }
 
-static struct fotg210_iso_stream *
-iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
+static struct fotg210_iso_stream *iso_stream_find(struct fotg210_hcd *fotg210,
+		struct urb *urb)
 {
-	unsigned		epnum;
-	struct fotg210_iso_stream	*stream;
+	unsigned epnum;
+	struct fotg210_iso_stream *stream;
 	struct usb_host_endpoint *ep;
-	unsigned long		flags;
+	unsigned long flags;
 
 	epnum = usb_pipeendpoint(urb->pipe);
 	if (usb_pipein(urb->pipe))
@@ -4182,8 +4028,8 @@ iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
 	/* if dev->ep[epnum] is a QH, hw is set */
 	} else if (unlikely(stream->hw != NULL)) {
 		fotg210_dbg(fotg210, "dev %s ep%d%s, not iso??\n",
-			urb->dev->devpath, epnum,
-			usb_pipein(urb->pipe) ? "in" : "out");
+				urb->dev->devpath, epnum,
+				usb_pipein(urb->pipe) ? "in" : "out");
 		stream = NULL;
 	}
 
@@ -4191,15 +4037,13 @@ iso_stream_find(struct fotg210_hcd *fotg210, struct urb *urb)
 	return stream;
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* fotg210_iso_sched ops can be ITD-only or SITD-only */
 
-static struct fotg210_iso_sched *
-iso_sched_alloc(unsigned packets, gfp_t mem_flags)
+static struct fotg210_iso_sched *iso_sched_alloc(unsigned packets,
+		gfp_t mem_flags)
 {
-	struct fotg210_iso_sched	*iso_sched;
-	int			size = sizeof(*iso_sched);
+	struct fotg210_iso_sched *iso_sched;
+	int size = sizeof(*iso_sched);
 
 	size += packets * sizeof(struct fotg210_iso_packet);
 	iso_sched = kzalloc(size, mem_flags);
@@ -4209,16 +4053,12 @@ iso_sched_alloc(unsigned packets, gfp_t mem_flags)
 	return iso_sched;
 }
 
-static inline void
-itd_sched_init(
-	struct fotg210_hcd		*fotg210,
-	struct fotg210_iso_sched	*iso_sched,
-	struct fotg210_iso_stream	*stream,
-	struct urb		*urb
-)
+static inline void itd_sched_init(struct fotg210_hcd *fotg210,
+		struct fotg210_iso_sched *iso_sched,
+		struct fotg210_iso_stream *stream, struct urb *urb)
 {
-	unsigned	i;
-	dma_addr_t	dma = urb->transfer_dma;
+	unsigned i;
+	dma_addr_t dma = urb->transfer_dma;
 
 	/* how many uframes are needed for these transfers */
 	iso_sched->span = urb->number_of_packets * stream->interval;
@@ -4227,10 +4067,10 @@ itd_sched_init(
 	 * when we fit new itds into the schedule.
 	 */
 	for (i = 0; i < urb->number_of_packets; i++) {
-		struct fotg210_iso_packet	*uframe = &iso_sched->packet[i];
-		unsigned		length;
-		dma_addr_t		buf;
-		u32			trans;
+		struct fotg210_iso_packet *uframe = &iso_sched->packet[i];
+		unsigned length;
+		dma_addr_t buf;
+		u32 trans;
 
 		length = urb->iso_frame_desc[i].length;
 		buf = dma + urb->iso_frame_desc[i].offset;
@@ -4251,11 +4091,8 @@ itd_sched_init(
 	}
 }
 
-static void
-iso_sched_free(
-	struct fotg210_iso_stream	*stream,
-	struct fotg210_iso_sched	*iso_sched
-)
+static void iso_sched_free(struct fotg210_iso_stream *stream,
+		struct fotg210_iso_sched *iso_sched)
 {
 	if (!iso_sched)
 		return;
@@ -4264,20 +4101,15 @@ iso_sched_free(
 	kfree(iso_sched);
 }
 
-static int
-itd_urb_transaction(
-	struct fotg210_iso_stream	*stream,
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	gfp_t			mem_flags
-)
+static int itd_urb_transaction(struct fotg210_iso_stream *stream,
+		struct fotg210_hcd *fotg210, struct urb *urb, gfp_t mem_flags)
 {
-	struct fotg210_itd		*itd;
-	dma_addr_t		itd_dma;
-	int			i;
-	unsigned		num_itds;
-	struct fotg210_iso_sched	*sched;
-	unsigned long		flags;
+	struct fotg210_itd *itd;
+	dma_addr_t itd_dma;
+	int i;
+	unsigned num_itds;
+	struct fotg210_iso_sched *sched;
+	unsigned long flags;
 
 	sched = iso_sched_alloc(urb->number_of_packets, mem_flags);
 	if (unlikely(sched == NULL))
@@ -4306,7 +4138,7 @@ itd_urb_transaction(
 			list_del(&itd->itd_list);
 			itd_dma = itd->itd_dma;
 		} else {
- alloc_itd:
+alloc_itd:
 			spin_unlock_irqrestore(&fotg210->lock, flags);
 			itd = dma_pool_alloc(fotg210->itd_pool, mem_flags,
 					&itd_dma);
@@ -4330,16 +4162,8 @@ itd_urb_transaction(
 	return 0;
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline int
-itd_slot_ok(
-	struct fotg210_hcd		*fotg210,
-	u32			mod,
-	u32			uframe,
-	u8			usecs,
-	u32			period
-)
+static inline int itd_slot_ok(struct fotg210_hcd *fotg210, u32 mod, u32 uframe,
+		u8 usecs, u32 period)
 {
 	uframe %= period;
 	do {
@@ -4354,8 +4178,7 @@ itd_slot_ok(
 	return 1;
 }
 
-/*
- * This scheduler plans almost as far into the future as it has actual
+/* This scheduler plans almost as far into the future as it has actual
  * periodic schedule slots.  (Affected by TUNE_FLS, which defaults to
  * "as small as possible" to be cache-friendlier.)  That limits the size
  * transfers you can stream reliably; avoid more than 64 msec per urb.
@@ -4365,19 +4188,15 @@ itd_slot_ok(
  * given FOTG210_TUNE_FLS and the slop).  Or, write a smarter scheduler!
  */
 
-#define SCHEDULE_SLOP	80	/* microframes */
+#define SCHEDULE_SLOP 80 /* microframes */
 
-static int
-iso_stream_schedule(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	struct fotg210_iso_stream	*stream
-)
+static int iso_stream_schedule(struct fotg210_hcd *fotg210, struct urb *urb,
+		struct fotg210_iso_stream *stream)
 {
-	u32			now, next, start, period, span;
-	int			status;
-	unsigned		mod = fotg210->periodic_size << 3;
-	struct fotg210_iso_sched	*sched = urb->hcpriv;
+	u32 now, next, start, period, span;
+	int status;
+	unsigned mod = fotg210->periodic_size << 3;
+	struct fotg210_iso_sched *sched = urb->hcpriv;
 
 	period = urb->interval;
 	span = sched->span;
@@ -4396,7 +4215,7 @@ iso_stream_schedule(
 	 * slot in the schedule, implicitly assuming URB_ISO_ASAP.
 	 */
 	if (likely(!list_empty(&stream->td_list))) {
-		u32	excess;
+		u32 excess;
 
 		/* For high speed devices, allow scheduling within the
 		 * isochronous scheduling threshold.  For full speed devices
@@ -4435,6 +4254,7 @@ iso_stream_schedule(
 	 */
 	else {
 		int done = 0;
+
 		start = SCHEDULE_SLOP + (now & ~0x07);
 
 		/* NOTE:  assumes URB_ISO_ASAP, to limit complexity/bugs */
@@ -4457,15 +4277,15 @@ iso_stream_schedule(
 		/* no room in the schedule */
 		if (!done) {
 			fotg210_dbg(fotg210, "iso resched full %p (now %d max %d)\n",
-				urb, now, now + mod);
+					urb, now, now + mod);
 			status = -ENOSPC;
 			goto fail;
 		}
 	}
 
 	/* Tried to schedule too far into the future? */
-	if (unlikely(start - now + span - period
-				>= mod - 2 * SCHEDULE_SLOP)) {
+	if (unlikely(start - now + span - period >=
+			mod - 2 * SCHEDULE_SLOP)) {
 		fotg210_dbg(fotg210, "request %p would overflow (%d+%d >= %d)\n",
 				urb, start - now, span - period,
 				mod - 2 * SCHEDULE_SLOP);
@@ -4485,17 +4305,14 @@ iso_stream_schedule(
 		fotg210->next_frame = now >> 3;
 	return 0;
 
- fail:
+fail:
 	iso_sched_free(stream, sched);
 	urb->hcpriv = NULL;
 	return status;
 }
 
-/*-------------------------------------------------------------------------*/
-
-static inline void
-itd_init(struct fotg210_hcd *fotg210, struct fotg210_iso_stream *stream,
-		struct fotg210_itd *itd)
+static inline void itd_init(struct fotg210_hcd *fotg210,
+		struct fotg210_iso_stream *stream, struct fotg210_itd *itd)
 {
 	int i;
 
@@ -4511,17 +4328,12 @@ itd_init(struct fotg210_hcd *fotg210, struct fotg210_iso_stream *stream,
 	/* All other fields are filled when scheduling */
 }
 
-static inline void
-itd_patch(
-	struct fotg210_hcd		*fotg210,
-	struct fotg210_itd		*itd,
-	struct fotg210_iso_sched	*iso_sched,
-	unsigned		index,
-	u16			uframe
-)
+static inline void itd_patch(struct fotg210_hcd *fotg210,
+		struct fotg210_itd *itd, struct fotg210_iso_sched *iso_sched,
+		unsigned index, u16 uframe)
 {
-	struct fotg210_iso_packet	*uf = &iso_sched->packet[index];
-	unsigned		pg = itd->pg;
+	struct fotg210_iso_packet *uf = &iso_sched->packet[index];
+	unsigned pg = itd->pg;
 
 	uframe &= 0x07;
 	itd->index[uframe] = index;
@@ -4533,7 +4345,7 @@ itd_patch(
 
 	/* iso_frame_desc[].offset must be strictly increasing */
 	if (unlikely(uf->cross)) {
-		u64	bufp = uf->bufp + 4096;
+		u64 bufp = uf->bufp + 4096;
 
 		itd->pg = ++pg;
 		itd->hw_bufp[pg] |= cpu_to_hc32(fotg210, bufp & ~(u32)0);
@@ -4541,13 +4353,13 @@ itd_patch(
 	}
 }
 
-static inline void
-itd_link(struct fotg210_hcd *fotg210, unsigned frame, struct fotg210_itd *itd)
+static inline void itd_link(struct fotg210_hcd *fotg210, unsigned frame,
+		struct fotg210_itd *itd)
 {
-	union fotg210_shadow	*prev = &fotg210->pshadow[frame];
-	__hc32			*hw_p = &fotg210->periodic[frame];
-	union fotg210_shadow	here = *prev;
-	__hc32			type = 0;
+	union fotg210_shadow *prev = &fotg210->pshadow[frame];
+	__hc32 *hw_p = &fotg210->periodic[frame];
+	union fotg210_shadow here = *prev;
+	__hc32 type = 0;
 
 	/* skip any iso nodes which might belong to previous microframes */
 	while (here.ptr) {
@@ -4568,17 +4380,13 @@ itd_link(struct fotg210_hcd *fotg210, unsigned frame, struct fotg210_itd *itd)
 }
 
 /* fit urb's itds into the selected schedule slot; activate as needed */
-static void itd_link_urb(
-	struct fotg210_hcd		*fotg210,
-	struct urb		*urb,
-	unsigned		mod,
-	struct fotg210_iso_stream	*stream
-)
-{
-	int			packet;
-	unsigned		next_uframe, uframe, frame;
-	struct fotg210_iso_sched	*iso_sched = urb->hcpriv;
-	struct fotg210_itd		*itd;
+static void itd_link_urb(struct fotg210_hcd *fotg210, struct urb *urb,
+		unsigned mod, struct fotg210_iso_stream *stream)
+{
+	int packet;
+	unsigned next_uframe, uframe, frame;
+	struct fotg210_iso_sched *iso_sched = urb->hcpriv;
+	struct fotg210_itd *itd;
 
 	next_uframe = stream->next_uframe & (mod - 1);
 
@@ -4621,7 +4429,7 @@ static void itd_link_urb(
 		if (((next_uframe >> 3) != frame)
 				|| packet == urb->number_of_packets) {
 			itd_link(fotg210, frame & (fotg210->periodic_size - 1),
-				 itd);
+					itd);
 			itd = NULL;
 		}
 	}
@@ -4635,8 +4443,8 @@ static void itd_link_urb(
 	enable_periodic(fotg210);
 }
 
-#define	ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\
-		  FOTG210_ISOC_XACTERR)
+#define ISO_ERRS (FOTG210_ISOC_BUF_ERR | FOTG210_ISOC_BABBLE |\
+		FOTG210_ISOC_XACTERR)
 
 /* Process and recycle a completed ITD.  Return true iff its urb completed,
  * and hence its completion callback probably added things to the hardware
@@ -4650,14 +4458,14 @@ static void itd_link_urb(
  */
 static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
 {
-	struct urb				*urb = itd->urb;
-	struct usb_iso_packet_descriptor	*desc;
-	u32					t;
-	unsigned				uframe;
-	int					urb_index = -1;
-	struct fotg210_iso_stream			*stream = itd->stream;
-	struct usb_device			*dev;
-	bool					retval = false;
+	struct urb *urb = itd->urb;
+	struct usb_iso_packet_descriptor *desc;
+	u32 t;
+	unsigned uframe;
+	int urb_index = -1;
+	struct fotg210_iso_stream *stream = itd->stream;
+	struct usb_device *dev;
+	bool retval = false;
 
 	/* for each uframe with a packet */
 	for (uframe = 0; uframe < 8; uframe++) {
@@ -4702,8 +4510,8 @@ static bool itd_complete(struct fotg210_hcd *fotg210, struct fotg210_itd *itd)
 		goto done;
 
 	/* ASSERT: it's really the last itd for this urb
-	list_for_each_entry (itd, &stream->td_list, itd_list)
-		BUG_ON (itd->urb == urb);
+	 * list_for_each_entry (itd, &stream->td_list, itd_list)
+	 *	BUG_ON (itd->urb == urb);
 	 */
 
 	/* give urb back to the driver; completion often (re)submits */
@@ -4740,14 +4548,12 @@ done:
 	return retval;
 }
 
-/*-------------------------------------------------------------------------*/
-
 static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
-	gfp_t mem_flags)
+		gfp_t mem_flags)
 {
-	int			status = -EINVAL;
-	unsigned long		flags;
-	struct fotg210_iso_stream	*stream;
+	int status = -EINVAL;
+	unsigned long flags;
+	struct fotg210_iso_stream *stream;
 
 	/* Get iso_stream head */
 	stream = iso_stream_find(fotg210, urb);
@@ -4756,22 +4562,22 @@ static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
 		return -ENOMEM;
 	}
 	if (unlikely(urb->interval != stream->interval &&
-		      fotg210_port_speed(fotg210, 0) ==
-				USB_PORT_STAT_HIGH_SPEED)) {
-			fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n",
+			fotg210_port_speed(fotg210, 0) ==
+			USB_PORT_STAT_HIGH_SPEED)) {
+		fotg210_dbg(fotg210, "can't change iso interval %d --> %d\n",
 				stream->interval, urb->interval);
-			goto done;
+		goto done;
 	}
 
 #ifdef FOTG210_URB_TRACE
 	fotg210_dbg(fotg210,
-		"%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n",
-		__func__, urb->dev->devpath, urb,
-		usb_pipeendpoint(urb->pipe),
-		usb_pipein(urb->pipe) ? "in" : "out",
-		urb->transfer_buffer_length,
-		urb->number_of_packets, urb->interval,
-		stream);
+			"%s %s urb %p ep%d%s len %d, %d pkts %d uframes[%p]\n",
+			__func__, urb->dev->devpath, urb,
+			usb_pipeendpoint(urb->pipe),
+			usb_pipein(urb->pipe) ? "in" : "out",
+			urb->transfer_buffer_length,
+			urb->number_of_packets, urb->interval,
+			stream);
 #endif
 
 	/* allocate ITDs w/o locking anything */
@@ -4795,19 +4601,87 @@ static int itd_submit(struct fotg210_hcd *fotg210, struct urb *urb,
 		itd_link_urb(fotg210, urb, fotg210->periodic_size << 3, stream);
 	else
 		usb_hcd_unlink_urb_from_ep(fotg210_to_hcd(fotg210), urb);
- done_not_linked:
+done_not_linked:
 	spin_unlock_irqrestore(&fotg210->lock, flags);
- done:
+done:
 	return status;
 }
 
-/*-------------------------------------------------------------------------*/
+static inline int scan_frame_queue(struct fotg210_hcd *fotg210, unsigned frame,
+		unsigned now_frame, bool live)
+{
+	unsigned uf;
+	bool modified;
+	union fotg210_shadow q, *q_p;
+	__hc32 type, *hw_p;
+
+	/* scan each element in frame's queue for completions */
+	q_p = &fotg210->pshadow[frame];
+	hw_p = &fotg210->periodic[frame];
+	q.ptr = q_p->ptr;
+	type = Q_NEXT_TYPE(fotg210, *hw_p);
+	modified = false;
+
+	while (q.ptr) {
+		switch (hc32_to_cpu(fotg210, type)) {
+		case Q_TYPE_ITD:
+			/* If this ITD is still active, leave it for
+			 * later processing ... check the next entry.
+			 * No need to check for activity unless the
+			 * frame is current.
+			 */
+			if (frame == now_frame && live) {
+				rmb();
+				for (uf = 0; uf < 8; uf++) {
+					if (q.itd->hw_transaction[uf] &
+							ITD_ACTIVE(fotg210))
+						break;
+				}
+				if (uf < 8) {
+					q_p = &q.itd->itd_next;
+					hw_p = &q.itd->hw_next;
+					type = Q_NEXT_TYPE(fotg210,
+							q.itd->hw_next);
+					q = *q_p;
+					break;
+				}
+			}
+
+			/* Take finished ITDs out of the schedule
+			 * and process them:  recycle, maybe report
+			 * URB completion.  HC won't cache the
+			 * pointer for much longer, if at all.
+			 */
+			*q_p = q.itd->itd_next;
+			*hw_p = q.itd->hw_next;
+			type = Q_NEXT_TYPE(fotg210, q.itd->hw_next);
+			wmb();
+			modified = itd_complete(fotg210, q.itd);
+			q = *q_p;
+			break;
+		default:
+			fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n",
+					type, frame, q.ptr);
+			/* FALL THROUGH */
+		case Q_TYPE_QH:
+		case Q_TYPE_FSTN:
+			/* End of the iTDs and siTDs */
+			q.ptr = NULL;
+			break;
+		}
+
+		/* assume completion callbacks modify the queue */
+		if (unlikely(modified && fotg210->isoc_count > 0))
+			return -EINVAL;
+	}
+	return 0;
+}
 
 static void scan_isoc(struct fotg210_hcd *fotg210)
 {
-	unsigned	uf, now_frame, frame;
-	unsigned	fmask = fotg210->periodic_size - 1;
-	bool		modified, live;
+	unsigned uf, now_frame, frame, ret;
+	unsigned fmask = fotg210->periodic_size - 1;
+	bool live;
 
 	/*
 	 * When running, scan from last scan point up to "now"
@@ -4826,69 +4700,10 @@ static void scan_isoc(struct fotg210_hcd *fotg210)
 
 	frame = fotg210->next_frame;
 	for (;;) {
-		union fotg210_shadow	q, *q_p;
-		__hc32			type, *hw_p;
-
-restart:
-		/* scan each element in frame's queue for completions */
-		q_p = &fotg210->pshadow[frame];
-		hw_p = &fotg210->periodic[frame];
-		q.ptr = q_p->ptr;
-		type = Q_NEXT_TYPE(fotg210, *hw_p);
-		modified = false;
-
-		while (q.ptr != NULL) {
-			switch (hc32_to_cpu(fotg210, type)) {
-			case Q_TYPE_ITD:
-				/* If this ITD is still active, leave it for
-				 * later processing ... check the next entry.
-				 * No need to check for activity unless the
-				 * frame is current.
-				 */
-				if (frame == now_frame && live) {
-					rmb();
-					for (uf = 0; uf < 8; uf++) {
-						if (q.itd->hw_transaction[uf] &
-							    ITD_ACTIVE(fotg210))
-							break;
-					}
-					if (uf < 8) {
-						q_p = &q.itd->itd_next;
-						hw_p = &q.itd->hw_next;
-						type = Q_NEXT_TYPE(fotg210,
-							q.itd->hw_next);
-						q = *q_p;
-						break;
-					}
-				}
-
-				/* Take finished ITDs out of the schedule
-				 * and process them:  recycle, maybe report
-				 * URB completion.  HC won't cache the
-				 * pointer for much longer, if at all.
-				 */
-				*q_p = q.itd->itd_next;
-				*hw_p = q.itd->hw_next;
-				type = Q_NEXT_TYPE(fotg210, q.itd->hw_next);
-				wmb();
-				modified = itd_complete(fotg210, q.itd);
-				q = *q_p;
-				break;
-			default:
-				fotg210_dbg(fotg210, "corrupt type %d frame %d shadow %p\n",
-					type, frame, q.ptr);
-				/* FALL THROUGH */
-			case Q_TYPE_QH:
-			case Q_TYPE_FSTN:
-				/* End of the iTDs and siTDs */
-				q.ptr = NULL;
-				break;
-			}
-
-			/* assume completion callbacks modify the queue */
-			if (unlikely(modified && fotg210->isoc_count > 0))
-				goto restart;
-		}
+		ret = 1;
+		while (ret != 0)
+			ret = scan_frame_queue(fotg210, frame,
+					now_frame, live);
 
 		/* Stop when we have reached the current frame */
 		if (frame == now_frame)
@@ -4897,16 +4712,14 @@ restart:
 	}
 	fotg210->next_frame = now_frame;
 }
-/*-------------------------------------------------------------------------*/
-/*
- * Display / Set uframe_periodic_max
+
+/* Display / Set uframe_periodic_max
  */
 static ssize_t show_uframe_periodic_max(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
+		struct device_attribute *attr, char *buf)
 {
-	struct fotg210_hcd		*fotg210;
-	int			n;
+	struct fotg210_hcd *fotg210;
+	int n;
 
 	fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
 	n = scnprintf(buf, PAGE_SIZE, "%d\n", fotg210->uframe_periodic_max);
@@ -4915,15 +4728,14 @@ static ssize_t show_uframe_periodic_max(struct device *dev,
 
 
 static ssize_t store_uframe_periodic_max(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t count)
+		struct device_attribute *attr, const char *buf, size_t count)
 {
-	struct fotg210_hcd	*fotg210;
-	unsigned		uframe_periodic_max;
-	unsigned		frame, uframe;
-	unsigned short		allocated_max;
-	unsigned long		flags;
-	ssize_t			ret;
+	struct fotg210_hcd *fotg210;
+	unsigned uframe_periodic_max;
+	unsigned frame, uframe;
+	unsigned short allocated_max;
+	unsigned long flags;
+	ssize_t ret;
 
 	fotg210 = hcd_to_fotg210(bus_to_hcd(dev_get_drvdata(dev)));
 	if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
@@ -4931,7 +4743,7 @@ static ssize_t store_uframe_periodic_max(struct device *dev,
 
 	if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
 		fotg210_info(fotg210, "rejecting invalid request for uframe_periodic_max=%u\n",
-			     uframe_periodic_max);
+				uframe_periodic_max);
 		return -EINVAL;
 	}
 
@@ -4954,22 +4766,22 @@ static ssize_t store_uframe_periodic_max(struct device *dev,
 		for (frame = 0; frame < fotg210->periodic_size; ++frame)
 			for (uframe = 0; uframe < 7; ++uframe)
 				allocated_max = max(allocated_max,
-						    periodic_usecs(fotg210, frame, uframe));
+						periodic_usecs(fotg210, frame,
+						uframe));
 
 		if (allocated_max > uframe_periodic_max) {
 			fotg210_info(fotg210,
-				"cannot decrease uframe_periodic_max because "
-				"periodic bandwidth is already allocated "
-				"(%u > %u)\n",
-				allocated_max, uframe_periodic_max);
+					"cannot decrease uframe_periodic_max because periodic bandwidth is already allocated (%u > %u)\n",
+					allocated_max, uframe_periodic_max);
 			goto out_unlock;
 		}
 	}
 
 	/* increasing is always ok */
 
-	fotg210_info(fotg210, "setting max periodic bandwidth to %u%% (== %u usec/uframe)\n",
-		     100 * uframe_periodic_max/125, uframe_periodic_max);
+	fotg210_info(fotg210,
+			"setting max periodic bandwidth to %u%% (== %u usec/uframe)\n",
+			100 * uframe_periodic_max/125, uframe_periodic_max);
 
 	if (uframe_periodic_max != 100)
 		fotg210_warn(fotg210, "max periodic bandwidth set is non-standard\n");
@@ -4987,8 +4799,8 @@ static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max,
 
 static inline int create_sysfs_files(struct fotg210_hcd *fotg210)
 {
-	struct device	*controller = fotg210_to_hcd(fotg210)->self.controller;
-	int	i = 0;
+	struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
+	int i = 0;
 
 	if (i)
 		goto out;
@@ -5000,12 +4812,10 @@ out:
 
 static inline void remove_sysfs_files(struct fotg210_hcd *fotg210)
 {
-	struct device	*controller = fotg210_to_hcd(fotg210)->self.controller;
+	struct device *controller = fotg210_to_hcd(fotg210)->self.controller;
 
 	device_remove_file(controller, &dev_attr_uframe_periodic_max);
 }
-/*-------------------------------------------------------------------------*/
-
 /* On some systems, leaving remote wakeup enabled prevents system shutdown.
  * The firmware seems to think that powering off is a wakeup event!
  * This routine turns off remote wakeup and everything else, on all ports.
@@ -5017,8 +4827,7 @@ static void fotg210_turn_off_all_ports(struct fotg210_hcd *fotg210)
 	fotg210_writel(fotg210, PORT_RWC_BITS, status_reg);
 }
 
-/*
- * Halt HC, turn off all ports, and let the BIOS use the companion controllers.
+/* Halt HC, turn off all ports, and let the BIOS use the companion controllers.
  * Must be called with interrupts enabled and the lock not held.
  */
 static void fotg210_silence_controller(struct fotg210_hcd *fotg210)
@@ -5037,7 +4846,7 @@ static void fotg210_silence_controller(struct fotg210_hcd *fotg210)
  */
 static void fotg210_shutdown(struct usb_hcd *hcd)
 {
-	struct fotg210_hcd	*fotg210 = hcd_to_fotg210(hcd);
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
 
 	spin_lock_irq(&fotg210->lock);
 	fotg210->shutdown = true;
@@ -5050,10 +4859,7 @@ static void fotg210_shutdown(struct usb_hcd *hcd)
 	hrtimer_cancel(&fotg210->hrtimer);
 }
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * fotg210_work is called from some interrupts, timers, and so on.
+/* fotg210_work is called from some interrupts, timers, and so on.
  * it calls driver completion functions, after dropping fotg210->lock.
  */
 static void fotg210_work(struct fotg210_hcd *fotg210)
@@ -5068,7 +4874,7 @@ static void fotg210_work(struct fotg210_hcd *fotg210)
 	}
 	fotg210->scanning = true;
 
- rescan:
+rescan:
 	fotg210->need_rescan = false;
 	if (fotg210->async_count)
 		scan_async(fotg210);
@@ -5087,12 +4893,11 @@ static void fotg210_work(struct fotg210_hcd *fotg210)
 	turn_on_io_watchdog(fotg210);
 }
 
-/*
- * Called when the fotg210_hcd module is removed.
+/* Called when the fotg210_hcd module is removed.
  */
 static void fotg210_stop(struct usb_hcd *hcd)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
 
 	fotg210_dbg(fotg210, "stop\n");
 
@@ -5116,26 +4921,26 @@ static void fotg210_stop(struct usb_hcd *hcd)
 	spin_unlock_irq(&fotg210->lock);
 	fotg210_mem_cleanup(fotg210);
 
-#ifdef	FOTG210_STATS
+#ifdef FOTG210_STATS
 	fotg210_dbg(fotg210, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
-		fotg210->stats.normal, fotg210->stats.error, fotg210->stats.iaa,
-		fotg210->stats.lost_iaa);
+			fotg210->stats.normal, fotg210->stats.error,
+			fotg210->stats.iaa, fotg210->stats.lost_iaa);
 	fotg210_dbg(fotg210, "complete %ld unlink %ld\n",
-		fotg210->stats.complete, fotg210->stats.unlink);
+			fotg210->stats.complete, fotg210->stats.unlink);
 #endif
 
 	dbg_status(fotg210, "fotg210_stop completed",
-		    fotg210_readl(fotg210, &fotg210->regs->status));
+			fotg210_readl(fotg210, &fotg210->regs->status));
 }
 
 /* one-time init, only for memory state */
 static int hcd_fotg210_init(struct usb_hcd *hcd)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	u32			temp;
-	int			retval;
-	u32			hcc_params;
-	struct fotg210_qh_hw	*hw;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	u32 temp;
+	int retval;
+	u32 hcc_params;
+	struct fotg210_qh_hw *hw;
 
 	spin_lock_init(&fotg210->lock);
 
@@ -5238,18 +5043,18 @@ static int hcd_fotg210_init(struct usb_hcd *hcd)
 /* start HC running; it's halted, hcd_fotg210_init() has been run (once) */
 static int fotg210_run(struct usb_hcd *hcd)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	u32			temp;
-	u32			hcc_params;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	u32 temp;
+	u32 hcc_params;
 
 	hcd->uses_new_polling = 1;
 
 	/* EHCI spec section 4.1 */
 
 	fotg210_writel(fotg210, fotg210->periodic_dma,
-		       &fotg210->regs->frame_list);
+			&fotg210->regs->frame_list);
 	fotg210_writel(fotg210, (u32)fotg210->async->qh_dma,
-		       &fotg210->regs->async_next);
+			&fotg210->regs->async_next);
 
 	/*
 	 * hcc_params controls whether fotg210->regs->segment must (!!!)
@@ -5258,7 +5063,7 @@ static int fotg210_run(struct usb_hcd *hcd)
 	 * streaming mappings for I/O buffers, like pci_map_single(),
 	 * can return segments above 4GB, if the device allows.
 	 *
-	 * NOTE:  the dma mask is visible through dma_supported(), so
+	 * NOTE:  the dma mask is visible through dev->dma_mask, so
 	 * drivers can pass this info along ... like NETIF_F_HIGHDMA,
 	 * Scsi_Host.highmem_io, and so forth.  It's readonly to all
 	 * host side drivers though.
@@ -5292,19 +5097,19 @@ static int fotg210_run(struct usb_hcd *hcd)
 	fotg210->rh_state = FOTG210_RH_RUNNING;
 	/* unblock posted writes */
 	fotg210_readl(fotg210, &fotg210->regs->command);
-	msleep(5);
+	usleep_range(5000, 10000);
 	up_write(&ehci_cf_port_reset_rwsem);
 	fotg210->last_periodic_enable = ktime_get_real();
 
 	temp = HC_VERSION(fotg210,
-			  fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
+			fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
 	fotg210_info(fotg210,
-		"USB %x.%x started, EHCI %x.%02x\n",
-		((fotg210->sbrn & 0xf0)>>4), (fotg210->sbrn & 0x0f),
-		temp >> 8, temp & 0xff);
+			"USB %x.%x started, EHCI %x.%02x\n",
+			((fotg210->sbrn & 0xf0) >> 4), (fotg210->sbrn & 0x0f),
+			temp >> 8, temp & 0xff);
 
 	fotg210_writel(fotg210, INTR_MASK,
-		    &fotg210->regs->intr_enable); /* Turn On Interrupts */
+			&fotg210->regs->intr_enable); /* Turn On Interrupts */
 
 	/* GRR this is run-once init(), being done every time the HC starts.
 	 * So long as they're part of class devices, we can't do it init()
@@ -5322,14 +5127,14 @@ static int fotg210_setup(struct usb_hcd *hcd)
 	int retval;
 
 	fotg210->regs = (void __iomem *)fotg210->caps +
-	    HC_LENGTH(fotg210,
-		      fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
+			HC_LENGTH(fotg210,
+			fotg210_readl(fotg210, &fotg210->caps->hc_capbase));
 	dbg_hcs_params(fotg210, "reset");
 	dbg_hcc_params(fotg210, "reset");
 
 	/* cache this readonly data; minimize chip reads */
 	fotg210->hcs_params = fotg210_readl(fotg210,
-					    &fotg210->caps->hcs_params);
+			&fotg210->caps->hcs_params);
 
 	fotg210->sbrn = HCD_USB2;
 
@@ -5347,13 +5152,11 @@ static int fotg210_setup(struct usb_hcd *hcd)
 	return 0;
 }
 
-/*-------------------------------------------------------------------------*/
-
 static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	u32			status, masked_status, pcd_status = 0, cmd;
-	int			bh;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	u32 status, masked_status, pcd_status = 0, cmd;
+	int bh;
 
 	spin_lock(&fotg210->lock);
 
@@ -5373,7 +5176,7 @@ static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
 
 	/* Shared IRQ? */
 	if (!masked_status ||
-	    unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) {
+			unlikely(fotg210->rh_state == FOTG210_RH_HALTED)) {
 		spin_unlock(&fotg210->lock);
 		return IRQ_NONE;
 	}
@@ -5440,7 +5243,7 @@ static irqreturn_t fotg210_irq(struct usb_hcd *hcd)
 
 		if (test_bit(0, &fotg210->suspended_ports) &&
 				((pstatus & PORT_RESUME) ||
-					!(pstatus & PORT_SUSPEND)) &&
+				!(pstatus & PORT_SUSPEND)) &&
 				(pstatus & PORT_PE) &&
 				fotg210->reset_done[0] == 0) {
 
@@ -5469,7 +5272,7 @@ dead:
 		fotg210->rh_state = FOTG210_RH_STOPPING;
 		fotg210->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
 		fotg210_writel(fotg210, fotg210->command,
-			       &fotg210->regs->command);
+				&fotg210->regs->command);
 		fotg210_writel(fotg210, 0, &fotg210->regs->intr_enable);
 		fotg210_handle_controller_death(fotg210);
 
@@ -5485,10 +5288,7 @@ dead:
 	return IRQ_HANDLED;
 }
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * non-error returns are a promise to giveback() the urb later
+/* non-error returns are a promise to giveback() the urb later
  * we drop ownership so next owner (or urb unlink) can get it
  *
  * urb + dev is in hcd.self.controller.urb_list
@@ -5499,13 +5299,11 @@ dead:
  * NOTE:  control, bulk, and interrupt share the same code to append TDs
  * to a (possibly active) QH, and the same QH scanning code.
  */
-static int fotg210_urb_enqueue(
-	struct usb_hcd	*hcd,
-	struct urb	*urb,
-	gfp_t		mem_flags
-) {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	struct list_head	qtd_list;
+static int fotg210_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
+		gfp_t mem_flags)
+{
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	struct list_head qtd_list;
 
 	INIT_LIST_HEAD(&qtd_list);
 
@@ -5539,10 +5337,10 @@ static int fotg210_urb_enqueue(
 
 static int fotg210_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	struct fotg210_qh		*qh;
-	unsigned long		flags;
-	int			rc;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	struct fotg210_qh *qh;
+	unsigned long flags;
+	int rc;
 
 	spin_lock_irqsave(&fotg210->lock, flags);
 	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
@@ -5603,16 +5401,14 @@ done:
 	return rc;
 }
 
-/*-------------------------------------------------------------------------*/
-
 /* bulk qh holds the data toggle */
 
-static void
-fotg210_endpoint_disable(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+static void fotg210_endpoint_disable(struct usb_hcd *hcd,
+		struct usb_host_endpoint *ep)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	unsigned long		flags;
-	struct fotg210_qh		*qh, *tmp;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	unsigned long flags;
+	struct fotg210_qh *qh, *tmp;
 
 	/* ASSERT:  any requests/urbs are being unlinked */
 	/* ASSERT:  nobody can be submitting urbs for this any more */
@@ -5627,7 +5423,7 @@ rescan:
 	 * accelerate iso completions ... so spin a while.
 	 */
 	if (qh->hw == NULL) {
-		struct fotg210_iso_stream	*stream = ep->hcpriv;
+		struct fotg210_iso_stream *stream = ep->hcpriv;
 
 		if (!list_empty(&stream->td_list))
 			goto idle_timeout;
@@ -5671,24 +5467,24 @@ idle_timeout:
 		 * that's not our job.  just leak this memory.
 		 */
 		fotg210_err(fotg210, "qh %p (#%02x) state %d%s\n",
-			qh, ep->desc.bEndpointAddress, qh->qh_state,
-			list_empty(&qh->qtd_list) ? "" : "(has tds)");
+				qh, ep->desc.bEndpointAddress, qh->qh_state,
+				list_empty(&qh->qtd_list) ? "" : "(has tds)");
 		break;
 	}
- done:
+done:
 	ep->hcpriv = NULL;
 	spin_unlock_irqrestore(&fotg210->lock, flags);
 }
 
-static void
-fotg210_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
+static void fotg210_endpoint_reset(struct usb_hcd *hcd,
+		struct usb_host_endpoint *ep)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
-	struct fotg210_qh		*qh;
-	int			eptype = usb_endpoint_type(&ep->desc);
-	int			epnum = usb_endpoint_num(&ep->desc);
-	int			is_out = usb_endpoint_dir_out(&ep->desc);
-	unsigned long		flags;
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+	struct fotg210_qh *qh;
+	int eptype = usb_endpoint_type(&ep->desc);
+	int epnum = usb_endpoint_num(&ep->desc);
+	int is_out = usb_endpoint_dir_out(&ep->desc);
+	unsigned long flags;
 
 	if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
 		return;
@@ -5723,15 +5519,13 @@ fotg210_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
 
 static int fotg210_get_frame(struct usb_hcd *hcd)
 {
-	struct fotg210_hcd		*fotg210 = hcd_to_fotg210(hcd);
+	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
+
 	return (fotg210_read_frame_index(fotg210) >> 3) %
 		fotg210->periodic_size;
 }
 
-/*-------------------------------------------------------------------------*/
-
-/*
- * The EHCI in ChipIdea HDRC cannot be a separate module or device,
+/* The EHCI in ChipIdea HDRC cannot be a separate module or device,
  * because its registers (and irq) are shared between host/gadget/otg
  * functions  and in order to facilitate role switching we cannot
  * give the fotg210 driver exclusive access to those.
@@ -5791,7 +5585,7 @@ static void fotg210_init(struct fotg210_hcd *fotg210)
 	u32 value;
 
 	iowrite32(GMIR_MDEV_INT | GMIR_MOTG_INT | GMIR_INT_POLARITY,
-		  &fotg210->regs->gmir);
+			&fotg210->regs->gmir);
 
 	value = ioread32(&fotg210->regs->otgcsr);
 	value &= ~OTGCSR_A_BUS_DROP;
@@ -5808,12 +5602,12 @@ static void fotg210_init(struct fotg210_hcd *fotg210)
  */
 static int fotg210_hcd_probe(struct platform_device *pdev)
 {
-	struct device			*dev = &pdev->dev;
-	struct usb_hcd			*hcd;
-	struct resource			*res;
-	int				irq;
-	int				retval = -ENODEV;
-	struct fotg210_hcd		*fotg210;
+	struct device *dev = &pdev->dev;
+	struct usb_hcd *hcd;
+	struct resource *res;
+	int irq;
+	int retval = -ENODEV;
+	struct fotg210_hcd *fotg210;
 
 	if (usb_disabled())
 		return -ENODEV;
@@ -5822,9 +5616,8 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
 
 	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
 	if (!res) {
-		dev_err(dev,
-			"Found HC with no IRQ. Check %s setup!\n",
-			dev_name(dev));
+		dev_err(dev, "Found HC with no IRQ. Check %s setup!\n",
+				dev_name(dev));
 		return -ENODEV;
 	}
 
@@ -5883,8 +5676,8 @@ fail_create_hcd:
  */
 static int fotg210_hcd_remove(struct platform_device *pdev)
 {
-	struct device *dev	= &pdev->dev;
-	struct usb_hcd *hcd	= dev_get_drvdata(dev);
+	struct device *dev = &pdev->dev;
+	struct usb_hcd *hcd = dev_get_drvdata(dev);
 
 	if (!hcd)
 		return 0;
@@ -5914,12 +5707,12 @@ static int __init fotg210_hcd_init(void)
 	set_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
 	if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) ||
 			test_bit(USB_OHCI_LOADED, &usb_hcds_loaded))
-		pr_warn(KERN_WARNING "Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after\n");
+		pr_warn("Warning! fotg210_hcd should always be loaded before uhci_hcd and ohci_hcd, not after\n");
 
 	pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n",
-		 hcd_name,
-		 sizeof(struct fotg210_qh), sizeof(struct fotg210_qtd),
-		 sizeof(struct fotg210_itd));
+			hcd_name, sizeof(struct fotg210_qh),
+			sizeof(struct fotg210_qtd),
+			sizeof(struct fotg210_itd));
 
 	fotg210_debug_root = debugfs_create_dir("fotg210", usb_debug_root);
 	if (!fotg210_debug_root) {
@@ -5932,7 +5725,6 @@ static int __init fotg210_hcd_init(void)
 		goto clean;
 	return retval;
 
-	platform_driver_unregister(&fotg210_hcd_driver);
 clean:
 	debugfs_remove(fotg210_debug_root);
 	fotg210_debug_root = NULL;
diff --git a/kernel/drivers/usb/host/fotg210.h b/kernel/drivers/usb/host/fotg210.h
index 3bad17859..b5cfa7aeb 100644
--- a/kernel/drivers/usb/host/fotg210.h
+++ b/kernel/drivers/usb/host/fotg210.h
@@ -137,19 +137,25 @@ struct fotg210_hcd {			/* one per controller */
 	/* per root hub port */
 	unsigned long		reset_done[FOTG210_MAX_ROOT_PORTS];
 
-	/* bit vectors (one bit per port) */
-	unsigned long		bus_suspended;		/* which ports were
-			already suspended at the start of a bus suspend */
-	unsigned long		companion_ports;	/* which ports are
-			dedicated to the companion controller */
-	unsigned long		owned_ports;		/* which ports are
-			owned by the companion during a bus suspend */
-	unsigned long		port_c_suspend;		/* which ports have
-			the change-suspend feature turned on */
-	unsigned long		suspended_ports;	/* which ports are
-			suspended */
-	unsigned long		resuming_ports;		/* which ports have
-			started to resume */
+	/* bit vectors (one bit per port)
+	 * which ports were already suspended at the start of a bus suspend
+	 */
+	unsigned long		bus_suspended;
+
+	/* which ports are edicated to the companion controller */
+	unsigned long		companion_ports;
+
+	/* which ports are owned by the companion during a bus suspend */
+	unsigned long		owned_ports;
+
+	/* which ports have the change-suspend feature turned on */
+	unsigned long		port_c_suspend;
+
+	/* which ports are suspended */
+	unsigned long		suspended_ports;
+
+	/* which ports have started to resume */
+	unsigned long		resuming_ports;
 
 	/* per-HC memory pools (could be per-bus, but ...) */
 	struct dma_pool		*qh_pool;	/* qh per active urb */
@@ -585,10 +591,10 @@ struct fotg210_fstn {
 /* Prepare the PORTSC wakeup flags during controller suspend/resume */
 
 #define fotg210_prepare_ports_for_controller_suspend(fotg210, do_wakeup) \
-		fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup);
+		fotg210_adjust_port_wakeup_flags(fotg210, true, do_wakeup)
 
 #define fotg210_prepare_ports_for_controller_resume(fotg210)		\
-		fotg210_adjust_port_wakeup_flags(fotg210, false, false);
+		fotg210_adjust_port_wakeup_flags(fotg210, false, false)
 
 /*-------------------------------------------------------------------------*/
 
diff --git a/kernel/drivers/usb/host/fsl-mph-dr-of.c b/kernel/drivers/usb/host/fsl-mph-dr-of.c
index 7e325e90d..0c382652a 100644
--- a/kernel/drivers/usb/host/fsl-mph-dr-of.c
+++ b/kernel/drivers/usb/host/fsl-mph-dr-of.c
@@ -69,6 +69,8 @@ static enum fsl_usb2_phy_modes determine_usb_phy(const char *phy_type)
 		return FSL_USB2_PHY_UTMI;
 	if (!strcasecmp(phy_type, "utmi_wide"))
 		return FSL_USB2_PHY_UTMI_WIDE;
+	if (!strcasecmp(phy_type, "utmi_dual"))
+		return FSL_USB2_PHY_UTMI_DUAL;
 	if (!strcasecmp(phy_type, "serial"))
 		return FSL_USB2_PHY_SERIAL;
 
@@ -119,13 +121,15 @@ error:
 
 static const struct of_device_id fsl_usb2_mph_dr_of_match[];
 
-static int usb_get_ver_info(struct device_node *np)
+static enum fsl_usb2_controller_ver usb_get_ver_info(struct device_node *np)
 {
-	int ver = -1;
+	enum fsl_usb2_controller_ver ver = FSL_USB_VER_NONE;
 
 	/*
 	 * returns 1 for usb controller version 1.6
 	 * returns 2 for usb controller version 2.2
+	 * returns 3 for usb controller version 2.4
+	 * returns 4 for usb controller version 2.5
 	 * returns 0 otherwise
 	 */
 	if (of_device_is_compatible(np, "fsl-usb2-dr")) {
@@ -135,10 +139,12 @@ static int usb_get_ver_info(struct device_node *np)
 			ver = FSL_USB_VER_2_2;
 		else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.4"))
 			ver = FSL_USB_VER_2_4;
+		else if (of_device_is_compatible(np, "fsl-usb2-dr-v2.5"))
+			ver = FSL_USB_VER_2_5;
 		else /* for previous controller versions */
 			ver = FSL_USB_VER_OLD;
 
-		if (ver > -1)
+		if (ver > FSL_USB_VER_NONE)
 			return ver;
 	}
 
@@ -150,6 +156,10 @@ static int usb_get_ver_info(struct device_node *np)
 			ver = FSL_USB_VER_1_6;
 		else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.2"))
 			ver = FSL_USB_VER_2_2;
+		else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.4"))
+			ver = FSL_USB_VER_2_4;
+		else if (of_device_is_compatible(np, "fsl-usb2-mph-v2.5"))
+			ver = FSL_USB_VER_2_5;
 		else /* for previous controller versions */
 			ver = FSL_USB_VER_OLD;
 	}
@@ -206,8 +216,27 @@ static int fsl_usb2_mph_dr_of_probe(struct platform_device *ofdev)
 	pdata->phy_mode = determine_usb_phy(prop);
 	pdata->controller_ver = usb_get_ver_info(np);
 
+	/* Activate Erratum by reading property in device tree */
+	if (of_get_property(np, "fsl,usb-erratum-a007792", NULL))
+		pdata->has_fsl_erratum_a007792 = 1;
+	else
+		pdata->has_fsl_erratum_a007792 = 0;
+	if (of_get_property(np, "fsl,usb-erratum-a005275", NULL))
+		pdata->has_fsl_erratum_a005275 = 1;
+	else
+		pdata->has_fsl_erratum_a005275 = 0;
+
+	/*
+	 * Determine whether phy_clk_valid needs to be checked
+	 * by reading property in device tree
+	 */
+	if (of_get_property(np, "phy-clk-valid", NULL))
+		pdata->check_phy_clk_valid = 1;
+	else
+		pdata->check_phy_clk_valid = 0;
+
 	if (pdata->have_sysif_regs) {
-		if (pdata->controller_ver < 0) {
+		if (pdata->controller_ver == FSL_USB_VER_NONE) {
 			dev_warn(&ofdev->dev, "Could not get controller version\n");
 			return -ENODEV;
 		}
@@ -322,6 +351,7 @@ static const struct of_device_id fsl_usb2_mph_dr_of_match[] = {
 #endif
 	{},
 };
+MODULE_DEVICE_TABLE(of, fsl_usb2_mph_dr_of_match);
 
 static struct platform_driver fsl_usb2_mph_dr_driver = {
 	.driver = {
diff --git a/kernel/drivers/usb/host/fusbh200-hcd.c b/kernel/drivers/usb/host/fusbh200-hcd.c
deleted file mode 100644
index 00e492eab..000000000
--- a/kernel/drivers/usb/host/fusbh200-hcd.c
+++ /dev/null
@@ -1,5893 +0,0 @@
-/*
- * Faraday FUSBH200 EHCI-like driver
- *
- * Copyright (c) 2013 Faraday Technology Corporation
- *
- * Author: Yuan-Hsin Chen <yhchen@faraday-tech.com>
- * 	   Feng-Hsin Chiang <john453@faraday-tech.com>
- * 	   Po-Yu Chuang <ratbert.chuang@gmail.com>
- *
- * Most of code borrowed from the Linux-3.7 EHCI driver
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <linux/module.h>
-#include <linux/device.h>
-#include <linux/dmapool.h>
-#include <linux/kernel.h>
-#include <linux/delay.h>
-#include <linux/ioport.h>
-#include <linux/sched.h>
-#include <linux/vmalloc.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/hrtimer.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/usb.h>
-#include <linux/usb/hcd.h>
-#include <linux/moduleparam.h>
-#include <linux/dma-mapping.h>
-#include <linux/debugfs.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/platform_device.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/unaligned.h>
-
-/*-------------------------------------------------------------------------*/
-#define DRIVER_AUTHOR "Yuan-Hsin Chen"
-#define DRIVER_DESC "FUSBH200 Host Controller (EHCI) Driver"
-
-static const char	hcd_name [] = "fusbh200_hcd";
-
-#undef FUSBH200_URB_TRACE
-
-/* magic numbers that can affect system performance */
-#define	FUSBH200_TUNE_CERR		3	/* 0-3 qtd retries; 0 == don't stop */
-#define	FUSBH200_TUNE_RL_HS		4	/* nak throttle; see 4.9 */
-#define	FUSBH200_TUNE_RL_TT		0
-#define	FUSBH200_TUNE_MULT_HS	1	/* 1-3 transactions/uframe; 4.10.3 */
-#define	FUSBH200_TUNE_MULT_TT	1
-/*
- * Some drivers think it's safe to schedule isochronous transfers more than
- * 256 ms into the future (partly as a result of an old bug in the scheduling
- * code).  In an attempt to avoid trouble, we will use a minimum scheduling
- * length of 512 frames instead of 256.
- */
-#define	FUSBH200_TUNE_FLS		1	/* (medium) 512-frame schedule */
-
-/* Initial IRQ latency:  faster than hw default */
-static int log2_irq_thresh = 0;		// 0 to 6
-module_param (log2_irq_thresh, int, S_IRUGO);
-MODULE_PARM_DESC (log2_irq_thresh, "log2 IRQ latency, 1-64 microframes");
-
-/* initial park setting:  slower than hw default */
-static unsigned park = 0;
-module_param (park, uint, S_IRUGO);
-MODULE_PARM_DESC (park, "park setting; 1-3 back-to-back async packets");
-
-/* for link power management(LPM) feature */
-static unsigned int hird;
-module_param(hird, int, S_IRUGO);
-MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us");
-
-#define	INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT)
-
-#include "fusbh200.h"
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_dbg(fusbh200, fmt, args...) \
-	dev_dbg (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_err(fusbh200, fmt, args...) \
-	dev_err (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_info(fusbh200, fmt, args...) \
-	dev_info (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-#define fusbh200_warn(fusbh200, fmt, args...) \
-	dev_warn (fusbh200_to_hcd(fusbh200)->self.controller , fmt , ## args )
-
-/* check the values in the HCSPARAMS register
- * (host controller _Structural_ parameters)
- * see EHCI spec, Table 2-4 for each value
- */
-static void dbg_hcs_params (struct fusbh200_hcd *fusbh200, char *label)
-{
-	u32	params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-
-	fusbh200_dbg (fusbh200,
-		"%s hcs_params 0x%x ports=%d\n",
-		label, params,
-		HCS_N_PORTS (params)
-		);
-}
-
-/* check the values in the HCCPARAMS register
- * (host controller _Capability_ parameters)
- * see EHCI Spec, Table 2-5 for each value
- * */
-static void dbg_hcc_params (struct fusbh200_hcd *fusbh200, char *label)
-{
-	u32	params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
-	fusbh200_dbg (fusbh200,
-		"%s hcc_params %04x uframes %s%s\n",
-		label,
-		params,
-		HCC_PGM_FRAMELISTLEN(params) ? "256/512/1024" : "1024",
-		HCC_CANPARK(params) ? " park" : "");
-}
-
-static void __maybe_unused
-dbg_qtd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd)
-{
-	fusbh200_dbg(fusbh200, "%s td %p n%08x %08x t%08x p0=%08x\n", label, qtd,
-		hc32_to_cpup(fusbh200, &qtd->hw_next),
-		hc32_to_cpup(fusbh200, &qtd->hw_alt_next),
-		hc32_to_cpup(fusbh200, &qtd->hw_token),
-		hc32_to_cpup(fusbh200, &qtd->hw_buf [0]));
-	if (qtd->hw_buf [1])
-		fusbh200_dbg(fusbh200, "  p1=%08x p2=%08x p3=%08x p4=%08x\n",
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[1]),
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[2]),
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[3]),
-			hc32_to_cpup(fusbh200, &qtd->hw_buf[4]));
-}
-
-static void __maybe_unused
-dbg_qh (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qh_hw *hw = qh->hw;
-
-	fusbh200_dbg (fusbh200, "%s qh %p n%08x info %x %x qtd %x\n", label,
-		qh, hw->hw_next, hw->hw_info1, hw->hw_info2, hw->hw_current);
-	dbg_qtd("overlay", fusbh200, (struct fusbh200_qtd *) &hw->hw_qtd_next);
-}
-
-static void __maybe_unused
-dbg_itd (const char *label, struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd)
-{
-	fusbh200_dbg (fusbh200, "%s [%d] itd %p, next %08x, urb %p\n",
-		label, itd->frame, itd, hc32_to_cpu(fusbh200, itd->hw_next),
-		itd->urb);
-	fusbh200_dbg (fusbh200,
-		"  trans: %08x %08x %08x %08x %08x %08x %08x %08x\n",
-		hc32_to_cpu(fusbh200, itd->hw_transaction[0]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[1]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[2]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[3]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[4]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[5]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[6]),
-		hc32_to_cpu(fusbh200, itd->hw_transaction[7]));
-	fusbh200_dbg (fusbh200,
-		"  buf:   %08x %08x %08x %08x %08x %08x %08x\n",
-		hc32_to_cpu(fusbh200, itd->hw_bufp[0]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[1]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[2]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[3]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[4]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[5]),
-		hc32_to_cpu(fusbh200, itd->hw_bufp[6]));
-	fusbh200_dbg (fusbh200, "  index: %d %d %d %d %d %d %d %d\n",
-		itd->index[0], itd->index[1], itd->index[2],
-		itd->index[3], itd->index[4], itd->index[5],
-		itd->index[6], itd->index[7]);
-}
-
-static int __maybe_unused
-dbg_status_buf (char *buf, unsigned len, const char *label, u32 status)
-{
-	return scnprintf (buf, len,
-		"%s%sstatus %04x%s%s%s%s%s%s%s%s%s%s",
-		label, label [0] ? " " : "", status,
-		(status & STS_ASS) ? " Async" : "",
-		(status & STS_PSS) ? " Periodic" : "",
-		(status & STS_RECL) ? " Recl" : "",
-		(status & STS_HALT) ? " Halt" : "",
-		(status & STS_IAA) ? " IAA" : "",
-		(status & STS_FATAL) ? " FATAL" : "",
-		(status & STS_FLR) ? " FLR" : "",
-		(status & STS_PCD) ? " PCD" : "",
-		(status & STS_ERR) ? " ERR" : "",
-		(status & STS_INT) ? " INT" : ""
-		);
-}
-
-static int __maybe_unused
-dbg_intr_buf (char *buf, unsigned len, const char *label, u32 enable)
-{
-	return scnprintf (buf, len,
-		"%s%sintrenable %02x%s%s%s%s%s%s",
-		label, label [0] ? " " : "", enable,
-		(enable & STS_IAA) ? " IAA" : "",
-		(enable & STS_FATAL) ? " FATAL" : "",
-		(enable & STS_FLR) ? " FLR" : "",
-		(enable & STS_PCD) ? " PCD" : "",
-		(enable & STS_ERR) ? " ERR" : "",
-		(enable & STS_INT) ? " INT" : ""
-		);
-}
-
-static const char *const fls_strings [] =
-    { "1024", "512", "256", "??" };
-
-static int
-dbg_command_buf (char *buf, unsigned len, const char *label, u32 command)
-{
-	return scnprintf (buf, len,
-		"%s%scommand %07x %s=%d ithresh=%d%s%s%s "
-		"period=%s%s %s",
-		label, label [0] ? " " : "", command,
-		(command & CMD_PARK) ? " park" : "(park)",
-		CMD_PARK_CNT (command),
-		(command >> 16) & 0x3f,
-		(command & CMD_IAAD) ? " IAAD" : "",
-		(command & CMD_ASE) ? " Async" : "",
-		(command & CMD_PSE) ? " Periodic" : "",
-		fls_strings [(command >> 2) & 0x3],
-		(command & CMD_RESET) ? " Reset" : "",
-		(command & CMD_RUN) ? "RUN" : "HALT"
-		);
-}
-
-static int
-dbg_port_buf (char *buf, unsigned len, const char *label, int port, u32 status)
-{
-	char	*sig;
-
-	/* signaling state */
-	switch (status & (3 << 10)) {
-	case 0 << 10: sig = "se0"; break;
-	case 1 << 10: sig = "k"; break;		/* low speed */
-	case 2 << 10: sig = "j"; break;
-	default: sig = "?"; break;
-	}
-
-	return scnprintf (buf, len,
-		"%s%sport:%d status %06x %d "
-		"sig=%s%s%s%s%s%s%s%s",
-		label, label [0] ? " " : "", port, status,
-		status>>25,/*device address */
-		sig,
-		(status & PORT_RESET) ? " RESET" : "",
-		(status & PORT_SUSPEND) ? " SUSPEND" : "",
-		(status & PORT_RESUME) ? " RESUME" : "",
-		(status & PORT_PEC) ? " PEC" : "",
-		(status & PORT_PE) ? " PE" : "",
-		(status & PORT_CSC) ? " CSC" : "",
-		(status & PORT_CONNECT) ? " CONNECT" : "");
-}
-
-/* functions have the "wrong" filename when they're output... */
-#define dbg_status(fusbh200, label, status) { \
-	char _buf [80]; \
-	dbg_status_buf (_buf, sizeof _buf, label, status); \
-	fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-#define dbg_cmd(fusbh200, label, command) { \
-	char _buf [80]; \
-	dbg_command_buf (_buf, sizeof _buf, label, command); \
-	fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-#define dbg_port(fusbh200, label, port, status) { \
-	char _buf [80]; \
-	dbg_port_buf (_buf, sizeof _buf, label, port, status); \
-	fusbh200_dbg (fusbh200, "%s\n", _buf); \
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* troubleshooting help: expose state in debugfs */
-
-static int debug_async_open(struct inode *, struct file *);
-static int debug_periodic_open(struct inode *, struct file *);
-static int debug_registers_open(struct inode *, struct file *);
-static int debug_async_open(struct inode *, struct file *);
-
-static ssize_t debug_output(struct file*, char __user*, size_t, loff_t*);
-static int debug_close(struct inode *, struct file *);
-
-static const struct file_operations debug_async_fops = {
-	.owner		= THIS_MODULE,
-	.open		= debug_async_open,
-	.read		= debug_output,
-	.release	= debug_close,
-	.llseek		= default_llseek,
-};
-static const struct file_operations debug_periodic_fops = {
-	.owner		= THIS_MODULE,
-	.open		= debug_periodic_open,
-	.read		= debug_output,
-	.release	= debug_close,
-	.llseek		= default_llseek,
-};
-static const struct file_operations debug_registers_fops = {
-	.owner		= THIS_MODULE,
-	.open		= debug_registers_open,
-	.read		= debug_output,
-	.release	= debug_close,
-	.llseek		= default_llseek,
-};
-
-static struct dentry *fusbh200_debug_root;
-
-struct debug_buffer {
-	ssize_t (*fill_func)(struct debug_buffer *);	/* fill method */
-	struct usb_bus *bus;
-	struct mutex mutex;	/* protect filling of buffer */
-	size_t count;		/* number of characters filled into buffer */
-	char *output_buf;
-	size_t alloc_size;
-};
-
-#define speed_char(info1) ({ char tmp; \
-		switch (info1 & (3 << 12)) { \
-		case QH_FULL_SPEED: tmp = 'f'; break; \
-		case QH_LOW_SPEED:  tmp = 'l'; break; \
-		case QH_HIGH_SPEED: tmp = 'h'; break; \
-		default: tmp = '?'; break; \
-		} tmp; })
-
-static inline char token_mark(struct fusbh200_hcd *fusbh200, __hc32 token)
-{
-	__u32 v = hc32_to_cpu(fusbh200, token);
-
-	if (v & QTD_STS_ACTIVE)
-		return '*';
-	if (v & QTD_STS_HALT)
-		return '-';
-	if (!IS_SHORT_READ (v))
-		return ' ';
-	/* tries to advance through hw_alt_next */
-	return '/';
-}
-
-static void qh_lines (
-	struct fusbh200_hcd *fusbh200,
-	struct fusbh200_qh *qh,
-	char **nextp,
-	unsigned *sizep
-)
-{
-	u32			scratch;
-	u32			hw_curr;
-	struct fusbh200_qtd		*td;
-	unsigned		temp;
-	unsigned		size = *sizep;
-	char			*next = *nextp;
-	char			mark;
-	__le32			list_end = FUSBH200_LIST_END(fusbh200);
-	struct fusbh200_qh_hw	*hw = qh->hw;
-
-	if (hw->hw_qtd_next == list_end)	/* NEC does this */
-		mark = '@';
-	else
-		mark = token_mark(fusbh200, hw->hw_token);
-	if (mark == '/') {	/* qh_alt_next controls qh advance? */
-		if ((hw->hw_alt_next & QTD_MASK(fusbh200))
-				== fusbh200->async->hw->hw_alt_next)
-			mark = '#';	/* blocked */
-		else if (hw->hw_alt_next == list_end)
-			mark = '.';	/* use hw_qtd_next */
-		/* else alt_next points to some other qtd */
-	}
-	scratch = hc32_to_cpup(fusbh200, &hw->hw_info1);
-	hw_curr = (mark == '*') ? hc32_to_cpup(fusbh200, &hw->hw_current) : 0;
-	temp = scnprintf (next, size,
-			"qh/%p dev%d %cs ep%d %08x %08x (%08x%c %s nak%d)",
-			qh, scratch & 0x007f,
-			speed_char (scratch),
-			(scratch >> 8) & 0x000f,
-			scratch, hc32_to_cpup(fusbh200, &hw->hw_info2),
-			hc32_to_cpup(fusbh200, &hw->hw_token), mark,
-			(cpu_to_hc32(fusbh200, QTD_TOGGLE) & hw->hw_token)
-				? "data1" : "data0",
-			(hc32_to_cpup(fusbh200, &hw->hw_alt_next) >> 1) & 0x0f);
-	size -= temp;
-	next += temp;
-
-	/* hc may be modifying the list as we read it ... */
-	list_for_each_entry(td, &qh->qtd_list, qtd_list) {
-		scratch = hc32_to_cpup(fusbh200, &td->hw_token);
-		mark = ' ';
-		if (hw_curr == td->qtd_dma)
-			mark = '*';
-		else if (hw->hw_qtd_next == cpu_to_hc32(fusbh200, td->qtd_dma))
-			mark = '+';
-		else if (QTD_LENGTH (scratch)) {
-			if (td->hw_alt_next == fusbh200->async->hw->hw_alt_next)
-				mark = '#';
-			else if (td->hw_alt_next != list_end)
-				mark = '/';
-		}
-		temp = snprintf (next, size,
-				"\n\t%p%c%s len=%d %08x urb %p",
-				td, mark, ({ char *tmp;
-				 switch ((scratch>>8)&0x03) {
-				 case 0: tmp = "out"; break;
-				 case 1: tmp = "in"; break;
-				 case 2: tmp = "setup"; break;
-				 default: tmp = "?"; break;
-				 } tmp;}),
-				(scratch >> 16) & 0x7fff,
-				scratch,
-				td->urb);
-		if (size < temp)
-			temp = size;
-		size -= temp;
-		next += temp;
-		if (temp == size)
-			goto done;
-	}
-
-	temp = snprintf (next, size, "\n");
-	if (size < temp)
-		temp = size;
-	size -= temp;
-	next += temp;
-
-done:
-	*sizep = size;
-	*nextp = next;
-}
-
-static ssize_t fill_async_buffer(struct debug_buffer *buf)
-{
-	struct usb_hcd		*hcd;
-	struct fusbh200_hcd	*fusbh200;
-	unsigned long		flags;
-	unsigned		temp, size;
-	char			*next;
-	struct fusbh200_qh		*qh;
-
-	hcd = bus_to_hcd(buf->bus);
-	fusbh200 = hcd_to_fusbh200 (hcd);
-	next = buf->output_buf;
-	size = buf->alloc_size;
-
-	*next = 0;
-
-	/* dumps a snapshot of the async schedule.
-	 * usually empty except for long-term bulk reads, or head.
-	 * one QH per line, and TDs we know about
-	 */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	for (qh = fusbh200->async->qh_next.qh; size > 0 && qh; qh = qh->qh_next.qh)
-		qh_lines (fusbh200, qh, &next, &size);
-	if (fusbh200->async_unlink && size > 0) {
-		temp = scnprintf(next, size, "\nunlink =\n");
-		size -= temp;
-		next += temp;
-
-		for (qh = fusbh200->async_unlink; size > 0 && qh;
-				qh = qh->unlink_next)
-			qh_lines (fusbh200, qh, &next, &size);
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-
-	return strlen(buf->output_buf);
-}
-
-#define DBG_SCHED_LIMIT 64
-static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
-{
-	struct usb_hcd		*hcd;
-	struct fusbh200_hcd		*fusbh200;
-	unsigned long		flags;
-	union fusbh200_shadow	p, *seen;
-	unsigned		temp, size, seen_count;
-	char			*next;
-	unsigned		i;
-	__hc32			tag;
-
-	if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
-		return 0;
-	seen_count = 0;
-
-	hcd = bus_to_hcd(buf->bus);
-	fusbh200 = hcd_to_fusbh200 (hcd);
-	next = buf->output_buf;
-	size = buf->alloc_size;
-
-	temp = scnprintf (next, size, "size = %d\n", fusbh200->periodic_size);
-	size -= temp;
-	next += temp;
-
-	/* dump a snapshot of the periodic schedule.
-	 * iso changes, interrupt usually doesn't.
-	 */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	for (i = 0; i < fusbh200->periodic_size; i++) {
-		p = fusbh200->pshadow [i];
-		if (likely (!p.ptr))
-			continue;
-		tag = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [i]);
-
-		temp = scnprintf (next, size, "%4d: ", i);
-		size -= temp;
-		next += temp;
-
-		do {
-			struct fusbh200_qh_hw *hw;
-
-			switch (hc32_to_cpu(fusbh200, tag)) {
-			case Q_TYPE_QH:
-				hw = p.qh->hw;
-				temp = scnprintf (next, size, " qh%d-%04x/%p",
-						p.qh->period,
-						hc32_to_cpup(fusbh200,
-							&hw->hw_info2)
-							/* uframe masks */
-							& (QH_CMASK | QH_SMASK),
-						p.qh);
-				size -= temp;
-				next += temp;
-				/* don't repeat what follows this qh */
-				for (temp = 0; temp < seen_count; temp++) {
-					if (seen [temp].ptr != p.ptr)
-						continue;
-					if (p.qh->qh_next.ptr) {
-						temp = scnprintf (next, size,
-							" ...");
-						size -= temp;
-						next += temp;
-					}
-					break;
-				}
-				/* show more info the first time around */
-				if (temp == seen_count) {
-					u32	scratch = hc32_to_cpup(fusbh200,
-							&hw->hw_info1);
-					struct fusbh200_qtd	*qtd;
-					char		*type = "";
-
-					/* count tds, get ep direction */
-					temp = 0;
-					list_for_each_entry (qtd,
-							&p.qh->qtd_list,
-							qtd_list) {
-						temp++;
-						switch (0x03 & (hc32_to_cpu(
-							fusbh200,
-							qtd->hw_token) >> 8)) {
-						case 0: type = "out"; continue;
-						case 1: type = "in"; continue;
-						}
-					}
-
-					temp = scnprintf (next, size,
-						" (%c%d ep%d%s "
-						"[%d/%d] q%d p%d)",
-						speed_char (scratch),
-						scratch & 0x007f,
-						(scratch >> 8) & 0x000f, type,
-						p.qh->usecs, p.qh->c_usecs,
-						temp,
-						0x7ff & (scratch >> 16));
-
-					if (seen_count < DBG_SCHED_LIMIT)
-						seen [seen_count++].qh = p.qh;
-				} else
-					temp = 0;
-				tag = Q_NEXT_TYPE(fusbh200, hw->hw_next);
-				p = p.qh->qh_next;
-				break;
-			case Q_TYPE_FSTN:
-				temp = scnprintf (next, size,
-					" fstn-%8x/%p", p.fstn->hw_prev,
-					p.fstn);
-				tag = Q_NEXT_TYPE(fusbh200, p.fstn->hw_next);
-				p = p.fstn->fstn_next;
-				break;
-			case Q_TYPE_ITD:
-				temp = scnprintf (next, size,
-					" itd/%p", p.itd);
-				tag = Q_NEXT_TYPE(fusbh200, p.itd->hw_next);
-				p = p.itd->itd_next;
-				break;
-			}
-			size -= temp;
-			next += temp;
-		} while (p.ptr);
-
-		temp = scnprintf (next, size, "\n");
-		size -= temp;
-		next += temp;
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	kfree (seen);
-
-	return buf->alloc_size - size;
-}
-#undef DBG_SCHED_LIMIT
-
-static const char *rh_state_string(struct fusbh200_hcd *fusbh200)
-{
-	switch (fusbh200->rh_state) {
-	case FUSBH200_RH_HALTED:
-		return "halted";
-	case FUSBH200_RH_SUSPENDED:
-		return "suspended";
-	case FUSBH200_RH_RUNNING:
-		return "running";
-	case FUSBH200_RH_STOPPING:
-		return "stopping";
-	}
-	return "?";
-}
-
-static ssize_t fill_registers_buffer(struct debug_buffer *buf)
-{
-	struct usb_hcd		*hcd;
-	struct fusbh200_hcd	*fusbh200;
-	unsigned long		flags;
-	unsigned		temp, size, i;
-	char			*next, scratch [80];
-	static char		fmt [] = "%*s\n";
-	static char		label [] = "";
-
-	hcd = bus_to_hcd(buf->bus);
-	fusbh200 = hcd_to_fusbh200 (hcd);
-	next = buf->output_buf;
-	size = buf->alloc_size;
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	if (!HCD_HW_ACCESSIBLE(hcd)) {
-		size = scnprintf (next, size,
-			"bus %s, device %s\n"
-			"%s\n"
-			"SUSPENDED (no register access)\n",
-			hcd->self.controller->bus->name,
-			dev_name(hcd->self.controller),
-			hcd->product_desc);
-		goto done;
-	}
-
-	/* Capability Registers */
-	i = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
-	temp = scnprintf (next, size,
-		"bus %s, device %s\n"
-		"%s\n"
-		"EHCI %x.%02x, rh state %s\n",
-		hcd->self.controller->bus->name,
-		dev_name(hcd->self.controller),
-		hcd->product_desc,
-		i >> 8, i & 0x0ff, rh_state_string(fusbh200));
-	size -= temp;
-	next += temp;
-
-	// FIXME interpret both types of params
-	i = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-	temp = scnprintf (next, size, "structural params 0x%08x\n", i);
-	size -= temp;
-	next += temp;
-
-	i = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-	temp = scnprintf (next, size, "capability params 0x%08x\n", i);
-	size -= temp;
-	next += temp;
-
-	/* Operational Registers */
-	temp = dbg_status_buf (scratch, sizeof scratch, label,
-			fusbh200_readl(fusbh200, &fusbh200->regs->status));
-	temp = scnprintf (next, size, fmt, temp, scratch);
-	size -= temp;
-	next += temp;
-
-	temp = dbg_command_buf (scratch, sizeof scratch, label,
-			fusbh200_readl(fusbh200, &fusbh200->regs->command));
-	temp = scnprintf (next, size, fmt, temp, scratch);
-	size -= temp;
-	next += temp;
-
-	temp = dbg_intr_buf (scratch, sizeof scratch, label,
-			fusbh200_readl(fusbh200, &fusbh200->regs->intr_enable));
-	temp = scnprintf (next, size, fmt, temp, scratch);
-	size -= temp;
-	next += temp;
-
-	temp = scnprintf (next, size, "uframe %04x\n",
-			fusbh200_read_frame_index(fusbh200));
-	size -= temp;
-	next += temp;
-
-	if (fusbh200->async_unlink) {
-		temp = scnprintf(next, size, "async unlink qh %p\n",
-				fusbh200->async_unlink);
-		size -= temp;
-		next += temp;
-	}
-
-	temp = scnprintf (next, size,
-		"irq normal %ld err %ld iaa %ld (lost %ld)\n",
-		fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa,
-		fusbh200->stats.lost_iaa);
-	size -= temp;
-	next += temp;
-
-	temp = scnprintf (next, size, "complete %ld unlink %ld\n",
-		fusbh200->stats.complete, fusbh200->stats.unlink);
-	size -= temp;
-	next += temp;
-
-done:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-
-	return buf->alloc_size - size;
-}
-
-static struct debug_buffer *alloc_buffer(struct usb_bus *bus,
-				ssize_t (*fill_func)(struct debug_buffer *))
-{
-	struct debug_buffer *buf;
-
-	buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
-
-	if (buf) {
-		buf->bus = bus;
-		buf->fill_func = fill_func;
-		mutex_init(&buf->mutex);
-		buf->alloc_size = PAGE_SIZE;
-	}
-
-	return buf;
-}
-
-static int fill_buffer(struct debug_buffer *buf)
-{
-	int ret = 0;
-
-	if (!buf->output_buf)
-		buf->output_buf = vmalloc(buf->alloc_size);
-
-	if (!buf->output_buf) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	ret = buf->fill_func(buf);
-
-	if (ret >= 0) {
-		buf->count = ret;
-		ret = 0;
-	}
-
-out:
-	return ret;
-}
-
-static ssize_t debug_output(struct file *file, char __user *user_buf,
-			    size_t len, loff_t *offset)
-{
-	struct debug_buffer *buf = file->private_data;
-	int ret = 0;
-
-	mutex_lock(&buf->mutex);
-	if (buf->count == 0) {
-		ret = fill_buffer(buf);
-		if (ret != 0) {
-			mutex_unlock(&buf->mutex);
-			goto out;
-		}
-	}
-	mutex_unlock(&buf->mutex);
-
-	ret = simple_read_from_buffer(user_buf, len, offset,
-				      buf->output_buf, buf->count);
-
-out:
-	return ret;
-
-}
-
-static int debug_close(struct inode *inode, struct file *file)
-{
-	struct debug_buffer *buf = file->private_data;
-
-	if (buf) {
-		vfree(buf->output_buf);
-		kfree(buf);
-	}
-
-	return 0;
-}
-static int debug_async_open(struct inode *inode, struct file *file)
-{
-	file->private_data = alloc_buffer(inode->i_private, fill_async_buffer);
-
-	return file->private_data ? 0 : -ENOMEM;
-}
-
-static int debug_periodic_open(struct inode *inode, struct file *file)
-{
-	struct debug_buffer *buf;
-	buf = alloc_buffer(inode->i_private, fill_periodic_buffer);
-	if (!buf)
-		return -ENOMEM;
-
-	buf->alloc_size = (sizeof(void *) == 4 ? 6 : 8)*PAGE_SIZE;
-	file->private_data = buf;
-	return 0;
-}
-
-static int debug_registers_open(struct inode *inode, struct file *file)
-{
-	file->private_data = alloc_buffer(inode->i_private,
-					  fill_registers_buffer);
-
-	return file->private_data ? 0 : -ENOMEM;
-}
-
-static inline void create_debug_files (struct fusbh200_hcd *fusbh200)
-{
-	struct usb_bus *bus = &fusbh200_to_hcd(fusbh200)->self;
-
-	fusbh200->debug_dir = debugfs_create_dir(bus->bus_name, fusbh200_debug_root);
-	if (!fusbh200->debug_dir)
-		return;
-
-	if (!debugfs_create_file("async", S_IRUGO, fusbh200->debug_dir, bus,
-						&debug_async_fops))
-		goto file_error;
-
-	if (!debugfs_create_file("periodic", S_IRUGO, fusbh200->debug_dir, bus,
-						&debug_periodic_fops))
-		goto file_error;
-
-	if (!debugfs_create_file("registers", S_IRUGO, fusbh200->debug_dir, bus,
-						    &debug_registers_fops))
-		goto file_error;
-
-	return;
-
-file_error:
-	debugfs_remove_recursive(fusbh200->debug_dir);
-}
-
-static inline void remove_debug_files (struct fusbh200_hcd *fusbh200)
-{
-	debugfs_remove_recursive(fusbh200->debug_dir);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * handshake - spin reading hc until handshake completes or fails
- * @ptr: address of hc register to be read
- * @mask: bits to look at in result of read
- * @done: value of those bits when handshake succeeds
- * @usec: timeout in microseconds
- *
- * Returns negative errno, or zero on success
- *
- * Success happens when the "mask" bits have the specified value (hardware
- * handshake done).  There are two failure modes:  "usec" have passed (major
- * hardware flakeout), or the register reads as all-ones (hardware removed).
- *
- * That last failure should_only happen in cases like physical cardbus eject
- * before driver shutdown. But it also seems to be caused by bugs in cardbus
- * bridge shutdown:  shutting down the bridge before the devices using it.
- */
-static int handshake (struct fusbh200_hcd *fusbh200, void __iomem *ptr,
-		      u32 mask, u32 done, int usec)
-{
-	u32	result;
-
-	do {
-		result = fusbh200_readl(fusbh200, ptr);
-		if (result == ~(u32)0)		/* card removed */
-			return -ENODEV;
-		result &= mask;
-		if (result == done)
-			return 0;
-		udelay (1);
-		usec--;
-	} while (usec > 0);
-	return -ETIMEDOUT;
-}
-
-/*
- * Force HC to halt state from unknown (EHCI spec section 2.3).
- * Must be called with interrupts enabled and the lock not held.
- */
-static int fusbh200_halt (struct fusbh200_hcd *fusbh200)
-{
-	u32	temp;
-
-	spin_lock_irq(&fusbh200->lock);
-
-	/* disable any irqs left enabled by previous code */
-	fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-
-	/*
-	 * This routine gets called during probe before fusbh200->command
-	 * has been initialized, so we can't rely on its value.
-	 */
-	fusbh200->command &= ~CMD_RUN;
-	temp = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-	temp &= ~(CMD_RUN | CMD_IAAD);
-	fusbh200_writel(fusbh200, temp, &fusbh200->regs->command);
-
-	spin_unlock_irq(&fusbh200->lock);
-	synchronize_irq(fusbh200_to_hcd(fusbh200)->irq);
-
-	return handshake(fusbh200, &fusbh200->regs->status,
-			  STS_HALT, STS_HALT, 16 * 125);
-}
-
-/*
- * Reset a non-running (STS_HALT == 1) controller.
- * Must be called with interrupts enabled and the lock not held.
- */
-static int fusbh200_reset (struct fusbh200_hcd *fusbh200)
-{
-	int	retval;
-	u32	command = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-
-	/* If the EHCI debug controller is active, special care must be
-	 * taken before and after a host controller reset */
-	if (fusbh200->debug && !dbgp_reset_prep(fusbh200_to_hcd(fusbh200)))
-		fusbh200->debug = NULL;
-
-	command |= CMD_RESET;
-	dbg_cmd (fusbh200, "reset", command);
-	fusbh200_writel(fusbh200, command, &fusbh200->regs->command);
-	fusbh200->rh_state = FUSBH200_RH_HALTED;
-	fusbh200->next_statechange = jiffies;
-	retval = handshake (fusbh200, &fusbh200->regs->command,
-			    CMD_RESET, 0, 250 * 1000);
-
-	if (retval)
-		return retval;
-
-	if (fusbh200->debug)
-		dbgp_external_startup(fusbh200_to_hcd(fusbh200));
-
-	fusbh200->port_c_suspend = fusbh200->suspended_ports =
-			fusbh200->resuming_ports = 0;
-	return retval;
-}
-
-/*
- * Idle the controller (turn off the schedules).
- * Must be called with interrupts enabled and the lock not held.
- */
-static void fusbh200_quiesce (struct fusbh200_hcd *fusbh200)
-{
-	u32	temp;
-
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	/* wait for any schedule enables/disables to take effect */
-	temp = (fusbh200->command << 10) & (STS_ASS | STS_PSS);
-	handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, temp, 16 * 125);
-
-	/* then disable anything that's still active */
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->command &= ~(CMD_ASE | CMD_PSE);
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-	spin_unlock_irq(&fusbh200->lock);
-
-	/* hardware can take 16 microframes to turn off ... */
-	handshake(fusbh200, &fusbh200->regs->status, STS_ASS | STS_PSS, 0, 16 * 125);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void end_unlink_async(struct fusbh200_hcd *fusbh200);
-static void unlink_empty_async(struct fusbh200_hcd *fusbh200);
-static void fusbh200_work(struct fusbh200_hcd *fusbh200);
-static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-/*-------------------------------------------------------------------------*/
-
-/* Set a bit in the USBCMD register */
-static void fusbh200_set_command_bit(struct fusbh200_hcd *fusbh200, u32 bit)
-{
-	fusbh200->command |= bit;
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-
-	/* unblock posted write */
-	fusbh200_readl(fusbh200, &fusbh200->regs->command);
-}
-
-/* Clear a bit in the USBCMD register */
-static void fusbh200_clear_command_bit(struct fusbh200_hcd *fusbh200, u32 bit)
-{
-	fusbh200->command &= ~bit;
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-
-	/* unblock posted write */
-	fusbh200_readl(fusbh200, &fusbh200->regs->command);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI timer support...  Now using hrtimers.
- *
- * Lots of different events are triggered from fusbh200->hrtimer.  Whenever
- * the timer routine runs, it checks each possible event; events that are
- * currently enabled and whose expiration time has passed get handled.
- * The set of enabled events is stored as a collection of bitflags in
- * fusbh200->enabled_hrtimer_events, and they are numbered in order of
- * increasing delay values (ranging between 1 ms and 100 ms).
- *
- * Rather than implementing a sorted list or tree of all pending events,
- * we keep track only of the lowest-numbered pending event, in
- * fusbh200->next_hrtimer_event.  Whenever fusbh200->hrtimer gets restarted, its
- * expiration time is set to the timeout value for this event.
- *
- * As a result, events might not get handled right away; the actual delay
- * could be anywhere up to twice the requested delay.  This doesn't
- * matter, because none of the events are especially time-critical.  The
- * ones that matter most all have a delay of 1 ms, so they will be
- * handled after 2 ms at most, which is okay.  In addition to this, we
- * allow for an expiration range of 1 ms.
- */
-
-/*
- * Delay lengths for the hrtimer event types.
- * Keep this list sorted by delay length, in the same order as
- * the event types indexed by enum fusbh200_hrtimer_event in fusbh200.h.
- */
-static unsigned event_delays_ns[] = {
-	1 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_POLL_ASS */
-	1 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_POLL_PSS */
-	1 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_POLL_DEAD */
-	1125 * NSEC_PER_USEC,	/* FUSBH200_HRTIMER_UNLINK_INTR */
-	2 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_FREE_ITDS */
-	6 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_ASYNC_UNLINKS */
-	10 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_IAA_WATCHDOG */
-	10 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_DISABLE_PERIODIC */
-	15 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_DISABLE_ASYNC */
-	100 * NSEC_PER_MSEC,	/* FUSBH200_HRTIMER_IO_WATCHDOG */
-};
-
-/* Enable a pending hrtimer event */
-static void fusbh200_enable_event(struct fusbh200_hcd *fusbh200, unsigned event,
-		bool resched)
-{
-	ktime_t		*timeout = &fusbh200->hr_timeouts[event];
-
-	if (resched)
-		*timeout = ktime_add(ktime_get(),
-				ktime_set(0, event_delays_ns[event]));
-	fusbh200->enabled_hrtimer_events |= (1 << event);
-
-	/* Track only the lowest-numbered pending event */
-	if (event < fusbh200->next_hrtimer_event) {
-		fusbh200->next_hrtimer_event = event;
-		hrtimer_start_range_ns(&fusbh200->hrtimer, *timeout,
-				NSEC_PER_MSEC, HRTIMER_MODE_ABS);
-	}
-}
-
-
-/* Poll the STS_ASS status bit; see when it agrees with CMD_ASE */
-static void fusbh200_poll_ASS(struct fusbh200_hcd *fusbh200)
-{
-	unsigned	actual, want;
-
-	/* Don't enable anything if the controller isn't running (e.g., died) */
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	want = (fusbh200->command & CMD_ASE) ? STS_ASS : 0;
-	actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_ASS;
-
-	if (want != actual) {
-
-		/* Poll again later, but give up after about 20 ms */
-		if (fusbh200->ASS_poll_count++ < 20) {
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_ASS, true);
-			return;
-		}
-		fusbh200_dbg(fusbh200, "Waited too long for the async schedule status (%x/%x), giving up\n",
-				want, actual);
-	}
-	fusbh200->ASS_poll_count = 0;
-
-	/* The status is up-to-date; restart or stop the schedule as needed */
-	if (want == 0) {	/* Stopped */
-		if (fusbh200->async_count > 0)
-			fusbh200_set_command_bit(fusbh200, CMD_ASE);
-
-	} else {		/* Running */
-		if (fusbh200->async_count == 0) {
-
-			/* Turn off the schedule after a while */
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_ASYNC,
-					true);
-		}
-	}
-}
-
-/* Turn off the async schedule after a brief delay */
-static void fusbh200_disable_ASE(struct fusbh200_hcd *fusbh200)
-{
-	fusbh200_clear_command_bit(fusbh200, CMD_ASE);
-}
-
-
-/* Poll the STS_PSS status bit; see when it agrees with CMD_PSE */
-static void fusbh200_poll_PSS(struct fusbh200_hcd *fusbh200)
-{
-	unsigned	actual, want;
-
-	/* Don't do anything if the controller isn't running (e.g., died) */
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	want = (fusbh200->command & CMD_PSE) ? STS_PSS : 0;
-	actual = fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_PSS;
-
-	if (want != actual) {
-
-		/* Poll again later, but give up after about 20 ms */
-		if (fusbh200->PSS_poll_count++ < 20) {
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_PSS, true);
-			return;
-		}
-		fusbh200_dbg(fusbh200, "Waited too long for the periodic schedule status (%x/%x), giving up\n",
-				want, actual);
-	}
-	fusbh200->PSS_poll_count = 0;
-
-	/* The status is up-to-date; restart or stop the schedule as needed */
-	if (want == 0) {	/* Stopped */
-		if (fusbh200->periodic_count > 0)
-			fusbh200_set_command_bit(fusbh200, CMD_PSE);
-
-	} else {		/* Running */
-		if (fusbh200->periodic_count == 0) {
-
-			/* Turn off the schedule after a while */
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_DISABLE_PERIODIC,
-					true);
-		}
-	}
-}
-
-/* Turn off the periodic schedule after a brief delay */
-static void fusbh200_disable_PSE(struct fusbh200_hcd *fusbh200)
-{
-	fusbh200_clear_command_bit(fusbh200, CMD_PSE);
-}
-
-
-/* Poll the STS_HALT status bit; see when a dead controller stops */
-static void fusbh200_handle_controller_death(struct fusbh200_hcd *fusbh200)
-{
-	if (!(fusbh200_readl(fusbh200, &fusbh200->regs->status) & STS_HALT)) {
-
-		/* Give up after a few milliseconds */
-		if (fusbh200->died_poll_count++ < 5) {
-			/* Try again later */
-			fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_POLL_DEAD, true);
-			return;
-		}
-		fusbh200_warn(fusbh200, "Waited too long for the controller to stop, giving up\n");
-	}
-
-	/* Clean up the mess */
-	fusbh200->rh_state = FUSBH200_RH_HALTED;
-	fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-	fusbh200_work(fusbh200);
-	end_unlink_async(fusbh200);
-
-	/* Not in process context, so don't try to reset the controller */
-}
-
-
-/* Handle unlinked interrupt QHs once they are gone from the hardware */
-static void fusbh200_handle_intr_unlinks(struct fusbh200_hcd *fusbh200)
-{
-	bool		stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING);
-
-	/*
-	 * Process all the QHs on the intr_unlink list that were added
-	 * before the current unlink cycle began.  The list is in
-	 * temporal order, so stop when we reach the first entry in the
-	 * current cycle.  But if the root hub isn't running then
-	 * process all the QHs on the list.
-	 */
-	fusbh200->intr_unlinking = true;
-	while (fusbh200->intr_unlink) {
-		struct fusbh200_qh	*qh = fusbh200->intr_unlink;
-
-		if (!stopped && qh->unlink_cycle == fusbh200->intr_unlink_cycle)
-			break;
-		fusbh200->intr_unlink = qh->unlink_next;
-		qh->unlink_next = NULL;
-		end_unlink_intr(fusbh200, qh);
-	}
-
-	/* Handle remaining entries later */
-	if (fusbh200->intr_unlink) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true);
-		++fusbh200->intr_unlink_cycle;
-	}
-	fusbh200->intr_unlinking = false;
-}
-
-
-/* Start another free-iTDs/siTDs cycle */
-static void start_free_itds(struct fusbh200_hcd *fusbh200)
-{
-	if (!(fusbh200->enabled_hrtimer_events & BIT(FUSBH200_HRTIMER_FREE_ITDS))) {
-		fusbh200->last_itd_to_free = list_entry(
-				fusbh200->cached_itd_list.prev,
-				struct fusbh200_itd, itd_list);
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_FREE_ITDS, true);
-	}
-}
-
-/* Wait for controller to stop using old iTDs and siTDs */
-static void end_free_itds(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_itd		*itd, *n;
-
-	if (fusbh200->rh_state < FUSBH200_RH_RUNNING) {
-		fusbh200->last_itd_to_free = NULL;
-	}
-
-	list_for_each_entry_safe(itd, n, &fusbh200->cached_itd_list, itd_list) {
-		list_del(&itd->itd_list);
-		dma_pool_free(fusbh200->itd_pool, itd, itd->itd_dma);
-		if (itd == fusbh200->last_itd_to_free)
-			break;
-	}
-
-	if (!list_empty(&fusbh200->cached_itd_list))
-		start_free_itds(fusbh200);
-}
-
-
-/* Handle lost (or very late) IAA interrupts */
-static void fusbh200_iaa_watchdog(struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING)
-		return;
-
-	/*
-	 * Lost IAA irqs wedge things badly; seen first with a vt8235.
-	 * So we need this watchdog, but must protect it against both
-	 * (a) SMP races against real IAA firing and retriggering, and
-	 * (b) clean HC shutdown, when IAA watchdog was pending.
-	 */
-	if (fusbh200->async_iaa) {
-		u32 cmd, status;
-
-		/* If we get here, IAA is *REALLY* late.  It's barely
-		 * conceivable that the system is so busy that CMD_IAAD
-		 * is still legitimately set, so let's be sure it's
-		 * clear before we read STS_IAA.  (The HC should clear
-		 * CMD_IAAD when it sets STS_IAA.)
-		 */
-		cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-
-		/*
-		 * If IAA is set here it either legitimately triggered
-		 * after the watchdog timer expired (_way_ late, so we'll
-		 * still count it as lost) ... or a silicon erratum:
-		 * - VIA seems to set IAA without triggering the IRQ;
-		 * - IAAD potentially cleared without setting IAA.
-		 */
-		status = fusbh200_readl(fusbh200, &fusbh200->regs->status);
-		if ((status & STS_IAA) || !(cmd & CMD_IAAD)) {
-			COUNT(fusbh200->stats.lost_iaa);
-			fusbh200_writel(fusbh200, STS_IAA, &fusbh200->regs->status);
-		}
-
-		fusbh200_dbg(fusbh200, "IAA watchdog: status %x cmd %x\n",
-				status, cmd);
-		end_unlink_async(fusbh200);
-	}
-}
-
-
-/* Enable the I/O watchdog, if appropriate */
-static void turn_on_io_watchdog(struct fusbh200_hcd *fusbh200)
-{
-	/* Not needed if the controller isn't running or it's already enabled */
-	if (fusbh200->rh_state != FUSBH200_RH_RUNNING ||
-			(fusbh200->enabled_hrtimer_events &
-				BIT(FUSBH200_HRTIMER_IO_WATCHDOG)))
-		return;
-
-	/*
-	 * Isochronous transfers always need the watchdog.
-	 * For other sorts we use it only if the flag is set.
-	 */
-	if (fusbh200->isoc_count > 0 || (fusbh200->need_io_watchdog &&
-			fusbh200->async_count + fusbh200->intr_count > 0))
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IO_WATCHDOG, true);
-}
-
-
-/*
- * Handler functions for the hrtimer event types.
- * Keep this array in the same order as the event types indexed by
- * enum fusbh200_hrtimer_event in fusbh200.h.
- */
-static void (*event_handlers[])(struct fusbh200_hcd *) = {
-	fusbh200_poll_ASS,			/* FUSBH200_HRTIMER_POLL_ASS */
-	fusbh200_poll_PSS,			/* FUSBH200_HRTIMER_POLL_PSS */
-	fusbh200_handle_controller_death,	/* FUSBH200_HRTIMER_POLL_DEAD */
-	fusbh200_handle_intr_unlinks,	/* FUSBH200_HRTIMER_UNLINK_INTR */
-	end_free_itds,			/* FUSBH200_HRTIMER_FREE_ITDS */
-	unlink_empty_async,		/* FUSBH200_HRTIMER_ASYNC_UNLINKS */
-	fusbh200_iaa_watchdog,		/* FUSBH200_HRTIMER_IAA_WATCHDOG */
-	fusbh200_disable_PSE,		/* FUSBH200_HRTIMER_DISABLE_PERIODIC */
-	fusbh200_disable_ASE,		/* FUSBH200_HRTIMER_DISABLE_ASYNC */
-	fusbh200_work,			/* FUSBH200_HRTIMER_IO_WATCHDOG */
-};
-
-static enum hrtimer_restart fusbh200_hrtimer_func(struct hrtimer *t)
-{
-	struct fusbh200_hcd	*fusbh200 = container_of(t, struct fusbh200_hcd, hrtimer);
-	ktime_t		now;
-	unsigned long	events;
-	unsigned long	flags;
-	unsigned	e;
-
-	spin_lock_irqsave(&fusbh200->lock, flags);
-
-	events = fusbh200->enabled_hrtimer_events;
-	fusbh200->enabled_hrtimer_events = 0;
-	fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT;
-
-	/*
-	 * Check each pending event.  If its time has expired, handle
-	 * the event; otherwise re-enable it.
-	 */
-	now = ktime_get();
-	for_each_set_bit(e, &events, FUSBH200_HRTIMER_NUM_EVENTS) {
-		if (now.tv64 >= fusbh200->hr_timeouts[e].tv64)
-			event_handlers[e](fusbh200);
-		else
-			fusbh200_enable_event(fusbh200, e, false);
-	}
-
-	spin_unlock_irqrestore(&fusbh200->lock, flags);
-	return HRTIMER_NORESTART;
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define fusbh200_bus_suspend	NULL
-#define fusbh200_bus_resume	NULL
-
-/*-------------------------------------------------------------------------*/
-
-static int check_reset_complete (
-	struct fusbh200_hcd	*fusbh200,
-	int		index,
-	u32 __iomem	*status_reg,
-	int		port_status
-) {
-	if (!(port_status & PORT_CONNECT))
-		return port_status;
-
-	/* if reset finished and it's still not enabled -- handoff */
-	if (!(port_status & PORT_PE)) {
-		/* with integrated TT, there's nobody to hand it to! */
-		fusbh200_dbg (fusbh200,
-			"Failed to enable port %d on root hub TT\n",
-			index+1);
-		return port_status;
-	} else {
-		fusbh200_dbg(fusbh200, "port %d reset complete, port enabled\n",
-			index + 1);
-	}
-
-	return port_status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-
-/* build "status change" packet (one or two bytes) from HC registers */
-
-static int
-fusbh200_hub_status_data (struct usb_hcd *hcd, char *buf)
-{
-	struct fusbh200_hcd	*fusbh200 = hcd_to_fusbh200 (hcd);
-	u32		temp, status;
-	u32		mask;
-	int		retval = 1;
-	unsigned long	flags;
-
-	/* init status to no-changes */
-	buf [0] = 0;
-
-	/* Inform the core about resumes-in-progress by returning
-	 * a non-zero value even if there are no status changes.
-	 */
-	status = fusbh200->resuming_ports;
-
-	mask = PORT_CSC | PORT_PEC;
-	// PORT_RESUME from hardware ~= PORT_STAT_C_SUSPEND
-
-	/* no hub change reports (bit 0) for now (power, ...) */
-
-	/* port N changes (bit N)? */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	temp = fusbh200_readl(fusbh200, &fusbh200->regs->port_status);
-
-	/*
-	 * Return status information even for ports with OWNER set.
-	 * Otherwise hub_wq wouldn't see the disconnect event when a
-	 * high-speed device is switched over to the companion
-	 * controller by the user.
-	 */
-
-	if ((temp & mask) != 0 || test_bit(0, &fusbh200->port_c_suspend)
-			|| (fusbh200->reset_done[0] && time_after_eq(
-				jiffies, fusbh200->reset_done[0]))) {
-		buf [0] |= 1 << 1;
-		status = STS_PCD;
-	}
-	/* FIXME autosuspend idle root hubs */
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return status ? retval : 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void
-fusbh200_hub_descriptor (
-	struct fusbh200_hcd		*fusbh200,
-	struct usb_hub_descriptor	*desc
-) {
-	int		ports = HCS_N_PORTS (fusbh200->hcs_params);
-	u16		temp;
-
-	desc->bDescriptorType = USB_DT_HUB;
-	desc->bPwrOn2PwrGood = 10;	/* fusbh200 1.0, 2.3.9 says 20ms max */
-	desc->bHubContrCurrent = 0;
-
-	desc->bNbrPorts = ports;
-	temp = 1 + (ports / 8);
-	desc->bDescLength = 7 + 2 * temp;
-
-	/* two bitmaps:  ports removable, and usb 1.0 legacy PortPwrCtrlMask */
-	memset(&desc->u.hs.DeviceRemovable[0], 0, temp);
-	memset(&desc->u.hs.DeviceRemovable[temp], 0xff, temp);
-
-	temp = HUB_CHAR_INDV_PORT_OCPM;	/* per-port overcurrent reporting */
-	temp |= HUB_CHAR_NO_LPSM;	/* no power switching */
-	desc->wHubCharacteristics = cpu_to_le16(temp);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int fusbh200_hub_control (
-	struct usb_hcd	*hcd,
-	u16		typeReq,
-	u16		wValue,
-	u16		wIndex,
-	char		*buf,
-	u16		wLength
-) {
-	struct fusbh200_hcd	*fusbh200 = hcd_to_fusbh200 (hcd);
-	int		ports = HCS_N_PORTS (fusbh200->hcs_params);
-	u32 __iomem	*status_reg = &fusbh200->regs->port_status;
-	u32		temp, temp1, status;
-	unsigned long	flags;
-	int		retval = 0;
-	unsigned	selector;
-
-	/*
-	 * FIXME:  support SetPortFeatures USB_PORT_FEAT_INDICATOR.
-	 * HCS_INDICATOR may say we can change LEDs to off/amber/green.
-	 * (track current state ourselves) ... blink for diagnostics,
-	 * power, "this is the one", etc.  EHCI spec supports this.
-	 */
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	switch (typeReq) {
-	case ClearHubFeature:
-		switch (wValue) {
-		case C_HUB_LOCAL_POWER:
-		case C_HUB_OVER_CURRENT:
-			/* no hub-wide feature/status flags */
-			break;
-		default:
-			goto error;
-		}
-		break;
-	case ClearPortFeature:
-		if (!wIndex || wIndex > ports)
-			goto error;
-		wIndex--;
-		temp = fusbh200_readl(fusbh200, status_reg);
-		temp &= ~PORT_RWC_BITS;
-
-		/*
-		 * Even if OWNER is set, so the port is owned by the
-		 * companion controller, hub_wq needs to be able to clear
-		 * the port-change status bits (especially
-		 * USB_PORT_STAT_C_CONNECTION).
-		 */
-
-		switch (wValue) {
-		case USB_PORT_FEAT_ENABLE:
-			fusbh200_writel(fusbh200, temp & ~PORT_PE, status_reg);
-			break;
-		case USB_PORT_FEAT_C_ENABLE:
-			fusbh200_writel(fusbh200, temp | PORT_PEC, status_reg);
-			break;
-		case USB_PORT_FEAT_SUSPEND:
-			if (temp & PORT_RESET)
-				goto error;
-			if (!(temp & PORT_SUSPEND))
-				break;
-			if ((temp & PORT_PE) == 0)
-				goto error;
-
-			fusbh200_writel(fusbh200, temp | PORT_RESUME, status_reg);
-			fusbh200->reset_done[wIndex] = jiffies
-					+ msecs_to_jiffies(USB_RESUME_TIMEOUT);
-			break;
-		case USB_PORT_FEAT_C_SUSPEND:
-			clear_bit(wIndex, &fusbh200->port_c_suspend);
-			break;
-		case USB_PORT_FEAT_C_CONNECTION:
-			fusbh200_writel(fusbh200, temp | PORT_CSC, status_reg);
-			break;
-		case USB_PORT_FEAT_C_OVER_CURRENT:
-			fusbh200_writel(fusbh200, temp | BMISR_OVC, &fusbh200->regs->bmisr);
-			break;
-		case USB_PORT_FEAT_C_RESET:
-			/* GetPortStatus clears reset */
-			break;
-		default:
-			goto error;
-		}
-		fusbh200_readl(fusbh200, &fusbh200->regs->command);	/* unblock posted write */
-		break;
-	case GetHubDescriptor:
-		fusbh200_hub_descriptor (fusbh200, (struct usb_hub_descriptor *)
-			buf);
-		break;
-	case GetHubStatus:
-		/* no hub-wide feature/status flags */
-		memset (buf, 0, 4);
-		//cpu_to_le32s ((u32 *) buf);
-		break;
-	case GetPortStatus:
-		if (!wIndex || wIndex > ports)
-			goto error;
-		wIndex--;
-		status = 0;
-		temp = fusbh200_readl(fusbh200, status_reg);
-
-		// wPortChange bits
-		if (temp & PORT_CSC)
-			status |= USB_PORT_STAT_C_CONNECTION << 16;
-		if (temp & PORT_PEC)
-			status |= USB_PORT_STAT_C_ENABLE << 16;
-
-		temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr);
-		if (temp1 & BMISR_OVC)
-			status |= USB_PORT_STAT_C_OVERCURRENT << 16;
-
-		/* whoever resumes must GetPortStatus to complete it!! */
-		if (temp & PORT_RESUME) {
-
-			/* Remote Wakeup received? */
-			if (!fusbh200->reset_done[wIndex]) {
-				/* resume signaling for 20 msec */
-				fusbh200->reset_done[wIndex] = jiffies
-						+ msecs_to_jiffies(20);
-				/* check the port again */
-				mod_timer(&fusbh200_to_hcd(fusbh200)->rh_timer,
-						fusbh200->reset_done[wIndex]);
-			}
-
-			/* resume completed? */
-			else if (time_after_eq(jiffies,
-					fusbh200->reset_done[wIndex])) {
-				clear_bit(wIndex, &fusbh200->suspended_ports);
-				set_bit(wIndex, &fusbh200->port_c_suspend);
-				fusbh200->reset_done[wIndex] = 0;
-
-				/* stop resume signaling */
-				temp = fusbh200_readl(fusbh200, status_reg);
-				fusbh200_writel(fusbh200,
-					temp & ~(PORT_RWC_BITS | PORT_RESUME),
-					status_reg);
-				clear_bit(wIndex, &fusbh200->resuming_ports);
-				retval = handshake(fusbh200, status_reg,
-					   PORT_RESUME, 0, 2000 /* 2msec */);
-				if (retval != 0) {
-					fusbh200_err(fusbh200,
-						"port %d resume error %d\n",
-						wIndex + 1, retval);
-					goto error;
-				}
-				temp &= ~(PORT_SUSPEND|PORT_RESUME|(3<<10));
-			}
-		}
-
-		/* whoever resets must GetPortStatus to complete it!! */
-		if ((temp & PORT_RESET)
-				&& time_after_eq(jiffies,
-					fusbh200->reset_done[wIndex])) {
-			status |= USB_PORT_STAT_C_RESET << 16;
-			fusbh200->reset_done [wIndex] = 0;
-			clear_bit(wIndex, &fusbh200->resuming_ports);
-
-			/* force reset to complete */
-			fusbh200_writel(fusbh200, temp & ~(PORT_RWC_BITS | PORT_RESET),
-					status_reg);
-			/* REVISIT:  some hardware needs 550+ usec to clear
-			 * this bit; seems too long to spin routinely...
-			 */
-			retval = handshake(fusbh200, status_reg,
-					PORT_RESET, 0, 1000);
-			if (retval != 0) {
-				fusbh200_err (fusbh200, "port %d reset error %d\n",
-					wIndex + 1, retval);
-				goto error;
-			}
-
-			/* see what we found out */
-			temp = check_reset_complete (fusbh200, wIndex, status_reg,
-					fusbh200_readl(fusbh200, status_reg));
-		}
-
-		if (!(temp & (PORT_RESUME|PORT_RESET))) {
-			fusbh200->reset_done[wIndex] = 0;
-			clear_bit(wIndex, &fusbh200->resuming_ports);
-		}
-
-		/* transfer dedicated ports to the companion hc */
-		if ((temp & PORT_CONNECT) &&
-				test_bit(wIndex, &fusbh200->companion_ports)) {
-			temp &= ~PORT_RWC_BITS;
-			fusbh200_writel(fusbh200, temp, status_reg);
-			fusbh200_dbg(fusbh200, "port %d --> companion\n", wIndex + 1);
-			temp = fusbh200_readl(fusbh200, status_reg);
-		}
-
-		/*
-		 * Even if OWNER is set, there's no harm letting hub_wq
-		 * see the wPortStatus values (they should all be 0 except
-		 * for PORT_POWER anyway).
-		 */
-
-		if (temp & PORT_CONNECT) {
-			status |= USB_PORT_STAT_CONNECTION;
-			status |= fusbh200_port_speed(fusbh200, temp);
-		}
-		if (temp & PORT_PE)
-			status |= USB_PORT_STAT_ENABLE;
-
-		/* maybe the port was unsuspended without our knowledge */
-		if (temp & (PORT_SUSPEND|PORT_RESUME)) {
-			status |= USB_PORT_STAT_SUSPEND;
-		} else if (test_bit(wIndex, &fusbh200->suspended_ports)) {
-			clear_bit(wIndex, &fusbh200->suspended_ports);
-			clear_bit(wIndex, &fusbh200->resuming_ports);
-			fusbh200->reset_done[wIndex] = 0;
-			if (temp & PORT_PE)
-				set_bit(wIndex, &fusbh200->port_c_suspend);
-		}
-
-		temp1 = fusbh200_readl(fusbh200, &fusbh200->regs->bmisr);
-		if (temp1 & BMISR_OVC)
-			status |= USB_PORT_STAT_OVERCURRENT;
-		if (temp & PORT_RESET)
-			status |= USB_PORT_STAT_RESET;
-		if (test_bit(wIndex, &fusbh200->port_c_suspend))
-			status |= USB_PORT_STAT_C_SUSPEND << 16;
-
-		if (status & ~0xffff)	/* only if wPortChange is interesting */
-			dbg_port(fusbh200, "GetStatus", wIndex + 1, temp);
-		put_unaligned_le32(status, buf);
-		break;
-	case SetHubFeature:
-		switch (wValue) {
-		case C_HUB_LOCAL_POWER:
-		case C_HUB_OVER_CURRENT:
-			/* no hub-wide feature/status flags */
-			break;
-		default:
-			goto error;
-		}
-		break;
-	case SetPortFeature:
-		selector = wIndex >> 8;
-		wIndex &= 0xff;
-
-		if (!wIndex || wIndex > ports)
-			goto error;
-		wIndex--;
-		temp = fusbh200_readl(fusbh200, status_reg);
-		temp &= ~PORT_RWC_BITS;
-		switch (wValue) {
-		case USB_PORT_FEAT_SUSPEND:
-			if ((temp & PORT_PE) == 0
-					|| (temp & PORT_RESET) != 0)
-				goto error;
-
-			/* After above check the port must be connected.
-			 * Set appropriate bit thus could put phy into low power
-			 * mode if we have hostpc feature
-			 */
-			fusbh200_writel(fusbh200, temp | PORT_SUSPEND, status_reg);
-			set_bit(wIndex, &fusbh200->suspended_ports);
-			break;
-		case USB_PORT_FEAT_RESET:
-			if (temp & PORT_RESUME)
-				goto error;
-			/* line status bits may report this as low speed,
-			 * which can be fine if this root hub has a
-			 * transaction translator built in.
-			 */
-			fusbh200_dbg(fusbh200, "port %d reset\n", wIndex + 1);
-			temp |= PORT_RESET;
-			temp &= ~PORT_PE;
-
-			/*
-			 * caller must wait, then call GetPortStatus
-			 * usb 2.0 spec says 50 ms resets on root
-			 */
-			fusbh200->reset_done [wIndex] = jiffies
-					+ msecs_to_jiffies (50);
-			fusbh200_writel(fusbh200, temp, status_reg);
-			break;
-
-		/* For downstream facing ports (these):  one hub port is put
-		 * into test mode according to USB2 11.24.2.13, then the hub
-		 * must be reset (which for root hub now means rmmod+modprobe,
-		 * or else system reboot).  See EHCI 2.3.9 and 4.14 for info
-		 * about the EHCI-specific stuff.
-		 */
-		case USB_PORT_FEAT_TEST:
-			if (!selector || selector > 5)
-				goto error;
-			spin_unlock_irqrestore(&fusbh200->lock, flags);
-			fusbh200_quiesce(fusbh200);
-			spin_lock_irqsave(&fusbh200->lock, flags);
-
-			/* Put all enabled ports into suspend */
-			temp = fusbh200_readl(fusbh200, status_reg) & ~PORT_RWC_BITS;
-			if (temp & PORT_PE)
-				fusbh200_writel(fusbh200, temp | PORT_SUSPEND,
-						status_reg);
-
-			spin_unlock_irqrestore(&fusbh200->lock, flags);
-			fusbh200_halt(fusbh200);
-			spin_lock_irqsave(&fusbh200->lock, flags);
-
-			temp = fusbh200_readl(fusbh200, status_reg);
-			temp |= selector << 16;
-			fusbh200_writel(fusbh200, temp, status_reg);
-			break;
-
-		default:
-			goto error;
-		}
-		fusbh200_readl(fusbh200, &fusbh200->regs->command);	/* unblock posted writes */
-		break;
-
-	default:
-error:
-		/* "stall" on error */
-		retval = -EPIPE;
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return retval;
-}
-
-static void __maybe_unused fusbh200_relinquish_port(struct usb_hcd *hcd,
-		int portnum)
-{
-	return;
-}
-
-static int __maybe_unused fusbh200_port_handed_over(struct usb_hcd *hcd,
-		int portnum)
-{
-	return 0;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * There's basically three types of memory:
- *	- data used only by the HCD ... kmalloc is fine
- *	- async and periodic schedules, shared by HC and HCD ... these
- *	  need to use dma_pool or dma_alloc_coherent
- *	- driver buffers, read/written by HC ... single shot DMA mapped
- *
- * There's also "register" data (e.g. PCI or SOC), which is memory mapped.
- * No memory seen by this driver is pageable.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* Allocate the key transfer structures from the previously allocated pool */
-
-static inline void fusbh200_qtd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd,
-				  dma_addr_t dma)
-{
-	memset (qtd, 0, sizeof *qtd);
-	qtd->qtd_dma = dma;
-	qtd->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT);
-	qtd->hw_next = FUSBH200_LIST_END(fusbh200);
-	qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-	INIT_LIST_HEAD (&qtd->qtd_list);
-}
-
-static struct fusbh200_qtd *fusbh200_qtd_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
-	struct fusbh200_qtd		*qtd;
-	dma_addr_t		dma;
-
-	qtd = dma_pool_alloc (fusbh200->qtd_pool, flags, &dma);
-	if (qtd != NULL) {
-		fusbh200_qtd_init(fusbh200, qtd, dma);
-	}
-	return qtd;
-}
-
-static inline void fusbh200_qtd_free (struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd)
-{
-	dma_pool_free (fusbh200->qtd_pool, qtd, qtd->qtd_dma);
-}
-
-
-static void qh_destroy(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	/* clean qtds first, and know this is not linked */
-	if (!list_empty (&qh->qtd_list) || qh->qh_next.ptr) {
-		fusbh200_dbg (fusbh200, "unused qh not empty!\n");
-		BUG ();
-	}
-	if (qh->dummy)
-		fusbh200_qtd_free (fusbh200, qh->dummy);
-	dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma);
-	kfree(qh);
-}
-
-static struct fusbh200_qh *fusbh200_qh_alloc (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
-	struct fusbh200_qh		*qh;
-	dma_addr_t		dma;
-
-	qh = kzalloc(sizeof *qh, GFP_ATOMIC);
-	if (!qh)
-		goto done;
-	qh->hw = (struct fusbh200_qh_hw *)
-		dma_pool_alloc(fusbh200->qh_pool, flags, &dma);
-	if (!qh->hw)
-		goto fail;
-	memset(qh->hw, 0, sizeof *qh->hw);
-	qh->qh_dma = dma;
-	// INIT_LIST_HEAD (&qh->qh_list);
-	INIT_LIST_HEAD (&qh->qtd_list);
-
-	/* dummy td enables safe urb queuing */
-	qh->dummy = fusbh200_qtd_alloc (fusbh200, flags);
-	if (qh->dummy == NULL) {
-		fusbh200_dbg (fusbh200, "no dummy td\n");
-		goto fail1;
-	}
-done:
-	return qh;
-fail1:
-	dma_pool_free(fusbh200->qh_pool, qh->hw, qh->qh_dma);
-fail:
-	kfree(qh);
-	return NULL;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* The queue heads and transfer descriptors are managed from pools tied
- * to each of the "per device" structures.
- * This is the initialisation and cleanup code.
- */
-
-static void fusbh200_mem_cleanup (struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->async)
-		qh_destroy(fusbh200, fusbh200->async);
-	fusbh200->async = NULL;
-
-	if (fusbh200->dummy)
-		qh_destroy(fusbh200, fusbh200->dummy);
-	fusbh200->dummy = NULL;
-
-	/* DMA consistent memory and pools */
-	if (fusbh200->qtd_pool)
-		dma_pool_destroy (fusbh200->qtd_pool);
-	fusbh200->qtd_pool = NULL;
-
-	if (fusbh200->qh_pool) {
-		dma_pool_destroy (fusbh200->qh_pool);
-		fusbh200->qh_pool = NULL;
-	}
-
-	if (fusbh200->itd_pool)
-		dma_pool_destroy (fusbh200->itd_pool);
-	fusbh200->itd_pool = NULL;
-
-	if (fusbh200->periodic)
-		dma_free_coherent (fusbh200_to_hcd(fusbh200)->self.controller,
-			fusbh200->periodic_size * sizeof (u32),
-			fusbh200->periodic, fusbh200->periodic_dma);
-	fusbh200->periodic = NULL;
-
-	/* shadow periodic table */
-	kfree(fusbh200->pshadow);
-	fusbh200->pshadow = NULL;
-}
-
-/* remember to add cleanup code (above) if you add anything here */
-static int fusbh200_mem_init (struct fusbh200_hcd *fusbh200, gfp_t flags)
-{
-	int i;
-
-	/* QTDs for control/bulk/intr transfers */
-	fusbh200->qtd_pool = dma_pool_create ("fusbh200_qtd",
-			fusbh200_to_hcd(fusbh200)->self.controller,
-			sizeof (struct fusbh200_qtd),
-			32 /* byte alignment (for hw parts) */,
-			4096 /* can't cross 4K */);
-	if (!fusbh200->qtd_pool) {
-		goto fail;
-	}
-
-	/* QHs for control/bulk/intr transfers */
-	fusbh200->qh_pool = dma_pool_create ("fusbh200_qh",
-			fusbh200_to_hcd(fusbh200)->self.controller,
-			sizeof(struct fusbh200_qh_hw),
-			32 /* byte alignment (for hw parts) */,
-			4096 /* can't cross 4K */);
-	if (!fusbh200->qh_pool) {
-		goto fail;
-	}
-	fusbh200->async = fusbh200_qh_alloc (fusbh200, flags);
-	if (!fusbh200->async) {
-		goto fail;
-	}
-
-	/* ITD for high speed ISO transfers */
-	fusbh200->itd_pool = dma_pool_create ("fusbh200_itd",
-			fusbh200_to_hcd(fusbh200)->self.controller,
-			sizeof (struct fusbh200_itd),
-			64 /* byte alignment (for hw parts) */,
-			4096 /* can't cross 4K */);
-	if (!fusbh200->itd_pool) {
-		goto fail;
-	}
-
-	/* Hardware periodic table */
-	fusbh200->periodic = (__le32 *)
-		dma_alloc_coherent (fusbh200_to_hcd(fusbh200)->self.controller,
-			fusbh200->periodic_size * sizeof(__le32),
-			&fusbh200->periodic_dma, 0);
-	if (fusbh200->periodic == NULL) {
-		goto fail;
-	}
-
-		for (i = 0; i < fusbh200->periodic_size; i++)
-			fusbh200->periodic[i] = FUSBH200_LIST_END(fusbh200);
-
-	/* software shadow of hardware table */
-	fusbh200->pshadow = kcalloc(fusbh200->periodic_size, sizeof(void *), flags);
-	if (fusbh200->pshadow != NULL)
-		return 0;
-
-fail:
-	fusbh200_dbg (fusbh200, "couldn't init memory\n");
-	fusbh200_mem_cleanup (fusbh200);
-	return -ENOMEM;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI hardware queue manipulation ... the core.  QH/QTD manipulation.
- *
- * Control, bulk, and interrupt traffic all use "qh" lists.  They list "qtd"
- * entries describing USB transactions, max 16-20kB/entry (with 4kB-aligned
- * buffers needed for the larger number).  We use one QH per endpoint, queue
- * multiple urbs (all three types) per endpoint.  URBs may need several qtds.
- *
- * ISO traffic uses "ISO TD" (itd) records, and (along with
- * interrupts) needs careful scheduling.  Performance improvements can be
- * an ongoing challenge.  That's in "ehci-sched.c".
- *
- * USB 1.1 devices are handled (a) by "companion" OHCI or UHCI root hubs,
- * or otherwise through transaction translators (TTs) in USB 2.0 hubs using
- * (b) special fields in qh entries or (c) split iso entries.  TTs will
- * buffer low/full speed data so the host collects it at high speed.
- */
-
-/*-------------------------------------------------------------------------*/
-
-/* fill a qtd, returning how much of the buffer we were able to queue up */
-
-static int
-qtd_fill(struct fusbh200_hcd *fusbh200, struct fusbh200_qtd *qtd, dma_addr_t buf,
-		  size_t len, int token, int maxpacket)
-{
-	int	i, count;
-	u64	addr = buf;
-
-	/* one buffer entry per 4K ... first might be short or unaligned */
-	qtd->hw_buf[0] = cpu_to_hc32(fusbh200, (u32)addr);
-	qtd->hw_buf_hi[0] = cpu_to_hc32(fusbh200, (u32)(addr >> 32));
-	count = 0x1000 - (buf & 0x0fff);	/* rest of that page */
-	if (likely (len < count))		/* ... iff needed */
-		count = len;
-	else {
-		buf +=  0x1000;
-		buf &= ~0x0fff;
-
-		/* per-qtd limit: from 16K to 20K (best alignment) */
-		for (i = 1; count < len && i < 5; i++) {
-			addr = buf;
-			qtd->hw_buf[i] = cpu_to_hc32(fusbh200, (u32)addr);
-			qtd->hw_buf_hi[i] = cpu_to_hc32(fusbh200,
-					(u32)(addr >> 32));
-			buf += 0x1000;
-			if ((count + 0x1000) < len)
-				count += 0x1000;
-			else
-				count = len;
-		}
-
-		/* short packets may only terminate transfers */
-		if (count != len)
-			count -= (count % maxpacket);
-	}
-	qtd->hw_token = cpu_to_hc32(fusbh200, (count << 16) | token);
-	qtd->length = count;
-
-	return count;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void
-qh_update (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh, struct fusbh200_qtd *qtd)
-{
-	struct fusbh200_qh_hw *hw = qh->hw;
-
-	/* writes to an active overlay are unsafe */
-	BUG_ON(qh->qh_state != QH_STATE_IDLE);
-
-	hw->hw_qtd_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-	hw->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-
-	/* Except for control endpoints, we make hardware maintain data
-	 * toggle (like OHCI) ... here (re)initialize the toggle in the QH,
-	 * and set the pseudo-toggle in udev. Only usb_clear_halt() will
-	 * ever clear it.
-	 */
-	if (!(hw->hw_info1 & cpu_to_hc32(fusbh200, QH_TOGGLE_CTL))) {
-		unsigned	is_out, epnum;
-
-		is_out = qh->is_out;
-		epnum = (hc32_to_cpup(fusbh200, &hw->hw_info1) >> 8) & 0x0f;
-		if (unlikely (!usb_gettoggle (qh->dev, epnum, is_out))) {
-			hw->hw_token &= ~cpu_to_hc32(fusbh200, QTD_TOGGLE);
-			usb_settoggle (qh->dev, epnum, is_out, 1);
-		}
-	}
-
-	hw->hw_token &= cpu_to_hc32(fusbh200, QTD_TOGGLE | QTD_STS_PING);
-}
-
-/* if it weren't for a common silicon quirk (writing the dummy into the qh
- * overlay, so qh->hw_token wrongly becomes inactive/halted), only fault
- * recovery (including urb dequeue) would need software changes to a QH...
- */
-static void
-qh_refresh (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qtd *qtd;
-
-	if (list_empty (&qh->qtd_list))
-		qtd = qh->dummy;
-	else {
-		qtd = list_entry (qh->qtd_list.next,
-				struct fusbh200_qtd, qtd_list);
-		/*
-		 * first qtd may already be partially processed.
-		 * If we come here during unlink, the QH overlay region
-		 * might have reference to the just unlinked qtd. The
-		 * qtd is updated in qh_completions(). Update the QH
-		 * overlay here.
-		 */
-		if (cpu_to_hc32(fusbh200, qtd->qtd_dma) == qh->hw->hw_current) {
-			qh->hw->hw_qtd_next = qtd->hw_next;
-			qtd = NULL;
-		}
-	}
-
-	if (qtd)
-		qh_update (fusbh200, qh, qtd);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void qh_link_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-static void fusbh200_clear_tt_buffer_complete(struct usb_hcd *hcd,
-		struct usb_host_endpoint *ep)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200(hcd);
-	struct fusbh200_qh		*qh = ep->hcpriv;
-	unsigned long		flags;
-
-	spin_lock_irqsave(&fusbh200->lock, flags);
-	qh->clearing_tt = 0;
-	if (qh->qh_state == QH_STATE_IDLE && !list_empty(&qh->qtd_list)
-			&& fusbh200->rh_state == FUSBH200_RH_RUNNING)
-		qh_link_async(fusbh200, qh);
-	spin_unlock_irqrestore(&fusbh200->lock, flags);
-}
-
-static void fusbh200_clear_tt_buffer(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh,
-		struct urb *urb, u32 token)
-{
-
-	/* If an async split transaction gets an error or is unlinked,
-	 * the TT buffer may be left in an indeterminate state.  We
-	 * have to clear the TT buffer.
-	 *
-	 * Note: this routine is never called for Isochronous transfers.
-	 */
-	if (urb->dev->tt && !usb_pipeint(urb->pipe) && !qh->clearing_tt) {
-		struct usb_device *tt = urb->dev->tt->hub;
-
-		dev_dbg(&tt->dev,
-			"clear tt buffer port %d, a%d ep%d t%08x\n",
-			urb->dev->ttport, urb->dev->devnum,
-			usb_pipeendpoint(urb->pipe), token);
-
-		if (urb->dev->tt->hub !=
-		    fusbh200_to_hcd(fusbh200)->self.root_hub) {
-			if (usb_hub_clear_tt_buffer(urb) == 0)
-				qh->clearing_tt = 1;
-		}
-	}
-}
-
-static int qtd_copy_status (
-	struct fusbh200_hcd *fusbh200,
-	struct urb *urb,
-	size_t length,
-	u32 token
-)
-{
-	int	status = -EINPROGRESS;
-
-	/* count IN/OUT bytes, not SETUP (even short packets) */
-	if (likely (QTD_PID (token) != 2))
-		urb->actual_length += length - QTD_LENGTH (token);
-
-	/* don't modify error codes */
-	if (unlikely(urb->unlinked))
-		return status;
-
-	/* force cleanup after short read; not always an error */
-	if (unlikely (IS_SHORT_READ (token)))
-		status = -EREMOTEIO;
-
-	/* serious "can't proceed" faults reported by the hardware */
-	if (token & QTD_STS_HALT) {
-		if (token & QTD_STS_BABBLE) {
-			/* FIXME "must" disable babbling device's port too */
-			status = -EOVERFLOW;
-		/* CERR nonzero + halt --> stall */
-		} else if (QTD_CERR(token)) {
-			status = -EPIPE;
-
-		/* In theory, more than one of the following bits can be set
-		 * since they are sticky and the transaction is retried.
-		 * Which to test first is rather arbitrary.
-		 */
-		} else if (token & QTD_STS_MMF) {
-			/* fs/ls interrupt xfer missed the complete-split */
-			status = -EPROTO;
-		} else if (token & QTD_STS_DBE) {
-			status = (QTD_PID (token) == 1) /* IN ? */
-				? -ENOSR  /* hc couldn't read data */
-				: -ECOMM; /* hc couldn't write data */
-		} else if (token & QTD_STS_XACT) {
-			/* timeout, bad CRC, wrong PID, etc */
-			fusbh200_dbg(fusbh200, "devpath %s ep%d%s 3strikes\n",
-				urb->dev->devpath,
-				usb_pipeendpoint(urb->pipe),
-				usb_pipein(urb->pipe) ? "in" : "out");
-			status = -EPROTO;
-		} else {	/* unknown */
-			status = -EPROTO;
-		}
-
-		fusbh200_dbg(fusbh200,
-			"dev%d ep%d%s qtd token %08x --> status %d\n",
-			usb_pipedevice (urb->pipe),
-			usb_pipeendpoint (urb->pipe),
-			usb_pipein (urb->pipe) ? "in" : "out",
-			token, status);
-	}
-
-	return status;
-}
-
-static void
-fusbh200_urb_done(struct fusbh200_hcd *fusbh200, struct urb *urb, int status)
-__releases(fusbh200->lock)
-__acquires(fusbh200->lock)
-{
-	if (likely (urb->hcpriv != NULL)) {
-		struct fusbh200_qh	*qh = (struct fusbh200_qh *) urb->hcpriv;
-
-		/* S-mask in a QH means it's an interrupt urb */
-		if ((qh->hw->hw_info2 & cpu_to_hc32(fusbh200, QH_SMASK)) != 0) {
-
-			/* ... update hc-wide periodic stats (for usbfs) */
-			fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs--;
-		}
-	}
-
-	if (unlikely(urb->unlinked)) {
-		COUNT(fusbh200->stats.unlink);
-	} else {
-		/* report non-error and short read status as zero */
-		if (status == -EINPROGRESS || status == -EREMOTEIO)
-			status = 0;
-		COUNT(fusbh200->stats.complete);
-	}
-
-#ifdef FUSBH200_URB_TRACE
-	fusbh200_dbg (fusbh200,
-		"%s %s urb %p ep%d%s status %d len %d/%d\n",
-		__func__, urb->dev->devpath, urb,
-		usb_pipeendpoint (urb->pipe),
-		usb_pipein (urb->pipe) ? "in" : "out",
-		status,
-		urb->actual_length, urb->transfer_buffer_length);
-#endif
-
-	/* complete() can reenter this HCD */
-	usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-	spin_unlock (&fusbh200->lock);
-	usb_hcd_giveback_urb(fusbh200_to_hcd(fusbh200), urb, status);
-	spin_lock (&fusbh200->lock);
-}
-
-static int qh_schedule (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh);
-
-/*
- * Process and free completed qtds for a qh, returning URBs to drivers.
- * Chases up to qh->hw_current.  Returns number of completions called,
- * indicating how much "real" work we did.
- */
-static unsigned
-qh_completions (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qtd		*last, *end = qh->dummy;
-	struct list_head	*entry, *tmp;
-	int			last_status;
-	int			stopped;
-	unsigned		count = 0;
-	u8			state;
-	struct fusbh200_qh_hw	*hw = qh->hw;
-
-	if (unlikely (list_empty (&qh->qtd_list)))
-		return count;
-
-	/* completions (or tasks on other cpus) must never clobber HALT
-	 * till we've gone through and cleaned everything up, even when
-	 * they add urbs to this qh's queue or mark them for unlinking.
-	 *
-	 * NOTE:  unlinking expects to be done in queue order.
-	 *
-	 * It's a bug for qh->qh_state to be anything other than
-	 * QH_STATE_IDLE, unless our caller is scan_async() or
-	 * scan_intr().
-	 */
-	state = qh->qh_state;
-	qh->qh_state = QH_STATE_COMPLETING;
-	stopped = (state == QH_STATE_IDLE);
-
- rescan:
-	last = NULL;
-	last_status = -EINPROGRESS;
-	qh->needs_rescan = 0;
-
-	/* remove de-activated QTDs from front of queue.
-	 * after faults (including short reads), cleanup this urb
-	 * then let the queue advance.
-	 * if queue is stopped, handles unlinks.
-	 */
-	list_for_each_safe (entry, tmp, &qh->qtd_list) {
-		struct fusbh200_qtd	*qtd;
-		struct urb	*urb;
-		u32		token = 0;
-
-		qtd = list_entry (entry, struct fusbh200_qtd, qtd_list);
-		urb = qtd->urb;
-
-		/* clean up any state from previous QTD ...*/
-		if (last) {
-			if (likely (last->urb != urb)) {
-				fusbh200_urb_done(fusbh200, last->urb, last_status);
-				count++;
-				last_status = -EINPROGRESS;
-			}
-			fusbh200_qtd_free (fusbh200, last);
-			last = NULL;
-		}
-
-		/* ignore urbs submitted during completions we reported */
-		if (qtd == end)
-			break;
-
-		/* hardware copies qtd out of qh overlay */
-		rmb ();
-		token = hc32_to_cpu(fusbh200, qtd->hw_token);
-
-		/* always clean up qtds the hc de-activated */
- retry_xacterr:
-		if ((token & QTD_STS_ACTIVE) == 0) {
-
-			/* Report Data Buffer Error: non-fatal but useful */
-			if (token & QTD_STS_DBE)
-				fusbh200_dbg(fusbh200,
-					"detected DataBufferErr for urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-					urb,
-					usb_endpoint_num(&urb->ep->desc),
-					usb_endpoint_dir_in(&urb->ep->desc) ? "in" : "out",
-					urb->transfer_buffer_length,
-					qtd,
-					qh);
-
-			/* on STALL, error, and short reads this urb must
-			 * complete and all its qtds must be recycled.
-			 */
-			if ((token & QTD_STS_HALT) != 0) {
-
-				/* retry transaction errors until we
-				 * reach the software xacterr limit
-				 */
-				if ((token & QTD_STS_XACT) &&
-						QTD_CERR(token) == 0 &&
-						++qh->xacterrs < QH_XACTERR_MAX &&
-						!urb->unlinked) {
-					fusbh200_dbg(fusbh200,
-	"detected XactErr len %zu/%zu retry %d\n",
-	qtd->length - QTD_LENGTH(token), qtd->length, qh->xacterrs);
-
-					/* reset the token in the qtd and the
-					 * qh overlay (which still contains
-					 * the qtd) so that we pick up from
-					 * where we left off
-					 */
-					token &= ~QTD_STS_HALT;
-					token |= QTD_STS_ACTIVE |
-							(FUSBH200_TUNE_CERR << 10);
-					qtd->hw_token = cpu_to_hc32(fusbh200,
-							token);
-					wmb();
-					hw->hw_token = cpu_to_hc32(fusbh200,
-							token);
-					goto retry_xacterr;
-				}
-				stopped = 1;
-
-			/* magic dummy for some short reads; qh won't advance.
-			 * that silicon quirk can kick in with this dummy too.
-			 *
-			 * other short reads won't stop the queue, including
-			 * control transfers (status stage handles that) or
-			 * most other single-qtd reads ... the queue stops if
-			 * URB_SHORT_NOT_OK was set so the driver submitting
-			 * the urbs could clean it up.
-			 */
-			} else if (IS_SHORT_READ (token)
-					&& !(qtd->hw_alt_next
-						& FUSBH200_LIST_END(fusbh200))) {
-				stopped = 1;
-			}
-
-		/* stop scanning when we reach qtds the hc is using */
-		} else if (likely (!stopped
-				&& fusbh200->rh_state >= FUSBH200_RH_RUNNING)) {
-			break;
-
-		/* scan the whole queue for unlinks whenever it stops */
-		} else {
-			stopped = 1;
-
-			/* cancel everything if we halt, suspend, etc */
-			if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
-				last_status = -ESHUTDOWN;
-
-			/* this qtd is active; skip it unless a previous qtd
-			 * for its urb faulted, or its urb was canceled.
-			 */
-			else if (last_status == -EINPROGRESS && !urb->unlinked)
-				continue;
-
-			/* qh unlinked; token in overlay may be most current */
-			if (state == QH_STATE_IDLE
-					&& cpu_to_hc32(fusbh200, qtd->qtd_dma)
-						== hw->hw_current) {
-				token = hc32_to_cpu(fusbh200, hw->hw_token);
-
-				/* An unlink may leave an incomplete
-				 * async transaction in the TT buffer.
-				 * We have to clear it.
-				 */
-				fusbh200_clear_tt_buffer(fusbh200, qh, urb, token);
-			}
-		}
-
-		/* unless we already know the urb's status, collect qtd status
-		 * and update count of bytes transferred.  in common short read
-		 * cases with only one data qtd (including control transfers),
-		 * queue processing won't halt.  but with two or more qtds (for
-		 * example, with a 32 KB transfer), when the first qtd gets a
-		 * short read the second must be removed by hand.
-		 */
-		if (last_status == -EINPROGRESS) {
-			last_status = qtd_copy_status(fusbh200, urb,
-					qtd->length, token);
-			if (last_status == -EREMOTEIO
-					&& (qtd->hw_alt_next
-						& FUSBH200_LIST_END(fusbh200)))
-				last_status = -EINPROGRESS;
-
-			/* As part of low/full-speed endpoint-halt processing
-			 * we must clear the TT buffer (11.17.5).
-			 */
-			if (unlikely(last_status != -EINPROGRESS &&
-					last_status != -EREMOTEIO)) {
-				/* The TT's in some hubs malfunction when they
-				 * receive this request following a STALL (they
-				 * stop sending isochronous packets).  Since a
-				 * STALL can't leave the TT buffer in a busy
-				 * state (if you believe Figures 11-48 - 11-51
-				 * in the USB 2.0 spec), we won't clear the TT
-				 * buffer in this case.  Strictly speaking this
-				 * is a violation of the spec.
-				 */
-				if (last_status != -EPIPE)
-					fusbh200_clear_tt_buffer(fusbh200, qh, urb,
-							token);
-			}
-		}
-
-		/* if we're removing something not at the queue head,
-		 * patch the hardware queue pointer.
-		 */
-		if (stopped && qtd->qtd_list.prev != &qh->qtd_list) {
-			last = list_entry (qtd->qtd_list.prev,
-					struct fusbh200_qtd, qtd_list);
-			last->hw_next = qtd->hw_next;
-		}
-
-		/* remove qtd; it's recycled after possible urb completion */
-		list_del (&qtd->qtd_list);
-		last = qtd;
-
-		/* reinit the xacterr counter for the next qtd */
-		qh->xacterrs = 0;
-	}
-
-	/* last urb's completion might still need calling */
-	if (likely (last != NULL)) {
-		fusbh200_urb_done(fusbh200, last->urb, last_status);
-		count++;
-		fusbh200_qtd_free (fusbh200, last);
-	}
-
-	/* Do we need to rescan for URBs dequeued during a giveback? */
-	if (unlikely(qh->needs_rescan)) {
-		/* If the QH is already unlinked, do the rescan now. */
-		if (state == QH_STATE_IDLE)
-			goto rescan;
-
-		/* Otherwise we have to wait until the QH is fully unlinked.
-		 * Our caller will start an unlink if qh->needs_rescan is
-		 * set.  But if an unlink has already started, nothing needs
-		 * to be done.
-		 */
-		if (state != QH_STATE_LINKED)
-			qh->needs_rescan = 0;
-	}
-
-	/* restore original state; caller must unlink or relink */
-	qh->qh_state = state;
-
-	/* be sure the hardware's done with the qh before refreshing
-	 * it after fault cleanup, or recovering from silicon wrongly
-	 * overlaying the dummy qtd (which reduces DMA chatter).
-	 */
-	if (stopped != 0 || hw->hw_qtd_next == FUSBH200_LIST_END(fusbh200)) {
-		switch (state) {
-		case QH_STATE_IDLE:
-			qh_refresh(fusbh200, qh);
-			break;
-		case QH_STATE_LINKED:
-			/* We won't refresh a QH that's linked (after the HC
-			 * stopped the queue).  That avoids a race:
-			 *  - HC reads first part of QH;
-			 *  - CPU updates that first part and the token;
-			 *  - HC reads rest of that QH, including token
-			 * Result:  HC gets an inconsistent image, and then
-			 * DMAs to/from the wrong memory (corrupting it).
-			 *
-			 * That should be rare for interrupt transfers,
-			 * except maybe high bandwidth ...
-			 */
-
-			/* Tell the caller to start an unlink */
-			qh->needs_rescan = 1;
-			break;
-		/* otherwise, unlink already started */
-		}
-	}
-
-	return count;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// high bandwidth multiplier, as encoded in highspeed endpoint descriptors
-#define hb_mult(wMaxPacketSize) (1 + (((wMaxPacketSize) >> 11) & 0x03))
-// ... and packet size, for any kind of endpoint descriptor
-#define max_packet(wMaxPacketSize) ((wMaxPacketSize) & 0x07ff)
-
-/*
- * reverse of qh_urb_transaction:  free a list of TDs.
- * used for cleanup after errors, before HC sees an URB's TDs.
- */
-static void qtd_list_free (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list
-) {
-	struct list_head	*entry, *temp;
-
-	list_for_each_safe (entry, temp, qtd_list) {
-		struct fusbh200_qtd	*qtd;
-
-		qtd = list_entry (entry, struct fusbh200_qtd, qtd_list);
-		list_del (&qtd->qtd_list);
-		fusbh200_qtd_free (fusbh200, qtd);
-	}
-}
-
-/*
- * create a list of filled qtds for this URB; won't link into qh.
- */
-static struct list_head *
-qh_urb_transaction (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*head,
-	gfp_t			flags
-) {
-	struct fusbh200_qtd		*qtd, *qtd_prev;
-	dma_addr_t		buf;
-	int			len, this_sg_len, maxpacket;
-	int			is_input;
-	u32			token;
-	int			i;
-	struct scatterlist	*sg;
-
-	/*
-	 * URBs map to sequences of QTDs:  one logical transaction
-	 */
-	qtd = fusbh200_qtd_alloc (fusbh200, flags);
-	if (unlikely (!qtd))
-		return NULL;
-	list_add_tail (&qtd->qtd_list, head);
-	qtd->urb = urb;
-
-	token = QTD_STS_ACTIVE;
-	token |= (FUSBH200_TUNE_CERR << 10);
-	/* for split transactions, SplitXState initialized to zero */
-
-	len = urb->transfer_buffer_length;
-	is_input = usb_pipein (urb->pipe);
-	if (usb_pipecontrol (urb->pipe)) {
-		/* SETUP pid */
-		qtd_fill(fusbh200, qtd, urb->setup_dma,
-				sizeof (struct usb_ctrlrequest),
-				token | (2 /* "setup" */ << 8), 8);
-
-		/* ... and always at least one more pid */
-		token ^= QTD_TOGGLE;
-		qtd_prev = qtd;
-		qtd = fusbh200_qtd_alloc (fusbh200, flags);
-		if (unlikely (!qtd))
-			goto cleanup;
-		qtd->urb = urb;
-		qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-		list_add_tail (&qtd->qtd_list, head);
-
-		/* for zero length DATA stages, STATUS is always IN */
-		if (len == 0)
-			token |= (1 /* "in" */ << 8);
-	}
-
-	/*
-	 * data transfer stage:  buffer setup
-	 */
-	i = urb->num_mapped_sgs;
-	if (len > 0 && i > 0) {
-		sg = urb->sg;
-		buf = sg_dma_address(sg);
-
-		/* urb->transfer_buffer_length may be smaller than the
-		 * size of the scatterlist (or vice versa)
-		 */
-		this_sg_len = min_t(int, sg_dma_len(sg), len);
-	} else {
-		sg = NULL;
-		buf = urb->transfer_dma;
-		this_sg_len = len;
-	}
-
-	if (is_input)
-		token |= (1 /* "in" */ << 8);
-	/* else it's already initted to "out" pid (0 << 8) */
-
-	maxpacket = max_packet(usb_maxpacket(urb->dev, urb->pipe, !is_input));
-
-	/*
-	 * buffer gets wrapped in one or more qtds;
-	 * last one may be "short" (including zero len)
-	 * and may serve as a control status ack
-	 */
-	for (;;) {
-		int this_qtd_len;
-
-		this_qtd_len = qtd_fill(fusbh200, qtd, buf, this_sg_len, token,
-				maxpacket);
-		this_sg_len -= this_qtd_len;
-		len -= this_qtd_len;
-		buf += this_qtd_len;
-
-		/*
-		 * short reads advance to a "magic" dummy instead of the next
-		 * qtd ... that forces the queue to stop, for manual cleanup.
-		 * (this will usually be overridden later.)
-		 */
-		if (is_input)
-			qtd->hw_alt_next = fusbh200->async->hw->hw_alt_next;
-
-		/* qh makes control packets use qtd toggle; maybe switch it */
-		if ((maxpacket & (this_qtd_len + (maxpacket - 1))) == 0)
-			token ^= QTD_TOGGLE;
-
-		if (likely(this_sg_len <= 0)) {
-			if (--i <= 0 || len <= 0)
-				break;
-			sg = sg_next(sg);
-			buf = sg_dma_address(sg);
-			this_sg_len = min_t(int, sg_dma_len(sg), len);
-		}
-
-		qtd_prev = qtd;
-		qtd = fusbh200_qtd_alloc (fusbh200, flags);
-		if (unlikely (!qtd))
-			goto cleanup;
-		qtd->urb = urb;
-		qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-		list_add_tail (&qtd->qtd_list, head);
-	}
-
-	/*
-	 * unless the caller requires manual cleanup after short reads,
-	 * have the alt_next mechanism keep the queue running after the
-	 * last data qtd (the only one, for control and most other cases).
-	 */
-	if (likely ((urb->transfer_flags & URB_SHORT_NOT_OK) == 0
-				|| usb_pipecontrol (urb->pipe)))
-		qtd->hw_alt_next = FUSBH200_LIST_END(fusbh200);
-
-	/*
-	 * control requests may need a terminating data "status" ack;
-	 * other OUT ones may need a terminating short packet
-	 * (zero length).
-	 */
-	if (likely (urb->transfer_buffer_length != 0)) {
-		int	one_more = 0;
-
-		if (usb_pipecontrol (urb->pipe)) {
-			one_more = 1;
-			token ^= 0x0100;	/* "in" <--> "out"  */
-			token |= QTD_TOGGLE;	/* force DATA1 */
-		} else if (usb_pipeout(urb->pipe)
-				&& (urb->transfer_flags & URB_ZERO_PACKET)
-				&& !(urb->transfer_buffer_length % maxpacket)) {
-			one_more = 1;
-		}
-		if (one_more) {
-			qtd_prev = qtd;
-			qtd = fusbh200_qtd_alloc (fusbh200, flags);
-			if (unlikely (!qtd))
-				goto cleanup;
-			qtd->urb = urb;
-			qtd_prev->hw_next = QTD_NEXT(fusbh200, qtd->qtd_dma);
-			list_add_tail (&qtd->qtd_list, head);
-
-			/* never any data in such packets */
-			qtd_fill(fusbh200, qtd, 0, 0, token, 0);
-		}
-	}
-
-	/* by default, enable interrupt on urb completion */
-	if (likely (!(urb->transfer_flags & URB_NO_INTERRUPT)))
-		qtd->hw_token |= cpu_to_hc32(fusbh200, QTD_IOC);
-	return head;
-
-cleanup:
-	qtd_list_free (fusbh200, urb, head);
-	return NULL;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// Would be best to create all qh's from config descriptors,
-// when each interface/altsetting is established.  Unlink
-// any previous qh and cancel its urbs first; endpoints are
-// implicitly reset then (data toggle too).
-// That'd mean updating how usbcore talks to HCDs. (2.7?)
-
-
-/*
- * Each QH holds a qtd list; a QH is used for everything except iso.
- *
- * For interrupt urbs, the scheduler must set the microframe scheduling
- * mask(s) each time the QH gets scheduled.  For highspeed, that's
- * just one microframe in the s-mask.  For split interrupt transactions
- * there are additional complications: c-mask, maybe FSTNs.
- */
-static struct fusbh200_qh *
-qh_make (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	gfp_t			flags
-) {
-	struct fusbh200_qh		*qh = fusbh200_qh_alloc (fusbh200, flags);
-	u32			info1 = 0, info2 = 0;
-	int			is_input, type;
-	int			maxp = 0;
-	struct usb_tt		*tt = urb->dev->tt;
-	struct fusbh200_qh_hw	*hw;
-
-	if (!qh)
-		return qh;
-
-	/*
-	 * init endpoint/device data for this QH
-	 */
-	info1 |= usb_pipeendpoint (urb->pipe) << 8;
-	info1 |= usb_pipedevice (urb->pipe) << 0;
-
-	is_input = usb_pipein (urb->pipe);
-	type = usb_pipetype (urb->pipe);
-	maxp = usb_maxpacket (urb->dev, urb->pipe, !is_input);
-
-	/* 1024 byte maxpacket is a hardware ceiling.  High bandwidth
-	 * acts like up to 3KB, but is built from smaller packets.
-	 */
-	if (max_packet(maxp) > 1024) {
-		fusbh200_dbg(fusbh200, "bogus qh maxpacket %d\n", max_packet(maxp));
-		goto done;
-	}
-
-	/* Compute interrupt scheduling parameters just once, and save.
-	 * - allowing for high bandwidth, how many nsec/uframe are used?
-	 * - split transactions need a second CSPLIT uframe; same question
-	 * - splits also need a schedule gap (for full/low speed I/O)
-	 * - qh has a polling interval
-	 *
-	 * For control/bulk requests, the HC or TT handles these.
-	 */
-	if (type == PIPE_INTERRUPT) {
-		qh->usecs = NS_TO_US(usb_calc_bus_time(USB_SPEED_HIGH,
-				is_input, 0,
-				hb_mult(maxp) * max_packet(maxp)));
-		qh->start = NO_FRAME;
-
-		if (urb->dev->speed == USB_SPEED_HIGH) {
-			qh->c_usecs = 0;
-			qh->gap_uf = 0;
-
-			qh->period = urb->interval >> 3;
-			if (qh->period == 0 && urb->interval != 1) {
-				/* NOTE interval 2 or 4 uframes could work.
-				 * But interval 1 scheduling is simpler, and
-				 * includes high bandwidth.
-				 */
-				urb->interval = 1;
-			} else if (qh->period > fusbh200->periodic_size) {
-				qh->period = fusbh200->periodic_size;
-				urb->interval = qh->period << 3;
-			}
-		} else {
-			int		think_time;
-
-			/* gap is f(FS/LS transfer times) */
-			qh->gap_uf = 1 + usb_calc_bus_time (urb->dev->speed,
-					is_input, 0, maxp) / (125 * 1000);
-
-			/* FIXME this just approximates SPLIT/CSPLIT times */
-			if (is_input) {		// SPLIT, gap, CSPLIT+DATA
-				qh->c_usecs = qh->usecs + HS_USECS (0);
-				qh->usecs = HS_USECS (1);
-			} else {		// SPLIT+DATA, gap, CSPLIT
-				qh->usecs += HS_USECS (1);
-				qh->c_usecs = HS_USECS (0);
-			}
-
-			think_time = tt ? tt->think_time : 0;
-			qh->tt_usecs = NS_TO_US (think_time +
-					usb_calc_bus_time (urb->dev->speed,
-					is_input, 0, max_packet (maxp)));
-			qh->period = urb->interval;
-			if (qh->period > fusbh200->periodic_size) {
-				qh->period = fusbh200->periodic_size;
-				urb->interval = qh->period;
-			}
-		}
-	}
-
-	/* support for tt scheduling, and access to toggles */
-	qh->dev = urb->dev;
-
-	/* using TT? */
-	switch (urb->dev->speed) {
-	case USB_SPEED_LOW:
-		info1 |= QH_LOW_SPEED;
-		/* FALL THROUGH */
-
-	case USB_SPEED_FULL:
-		/* EPS 0 means "full" */
-		if (type != PIPE_INTERRUPT)
-			info1 |= (FUSBH200_TUNE_RL_TT << 28);
-		if (type == PIPE_CONTROL) {
-			info1 |= QH_CONTROL_EP;		/* for TT */
-			info1 |= QH_TOGGLE_CTL;		/* toggle from qtd */
-		}
-		info1 |= maxp << 16;
-
-		info2 |= (FUSBH200_TUNE_MULT_TT << 30);
-
-		/* Some Freescale processors have an erratum in which the
-		 * port number in the queue head was 0..N-1 instead of 1..N.
-		 */
-		if (fusbh200_has_fsl_portno_bug(fusbh200))
-			info2 |= (urb->dev->ttport-1) << 23;
-		else
-			info2 |= urb->dev->ttport << 23;
-
-		/* set the address of the TT; for TDI's integrated
-		 * root hub tt, leave it zeroed.
-		 */
-		if (tt && tt->hub != fusbh200_to_hcd(fusbh200)->self.root_hub)
-			info2 |= tt->hub->devnum << 16;
-
-		/* NOTE:  if (PIPE_INTERRUPT) { scheduler sets c-mask } */
-
-		break;
-
-	case USB_SPEED_HIGH:		/* no TT involved */
-		info1 |= QH_HIGH_SPEED;
-		if (type == PIPE_CONTROL) {
-			info1 |= (FUSBH200_TUNE_RL_HS << 28);
-			info1 |= 64 << 16;	/* usb2 fixed maxpacket */
-			info1 |= QH_TOGGLE_CTL;	/* toggle from qtd */
-			info2 |= (FUSBH200_TUNE_MULT_HS << 30);
-		} else if (type == PIPE_BULK) {
-			info1 |= (FUSBH200_TUNE_RL_HS << 28);
-			/* The USB spec says that high speed bulk endpoints
-			 * always use 512 byte maxpacket.  But some device
-			 * vendors decided to ignore that, and MSFT is happy
-			 * to help them do so.  So now people expect to use
-			 * such nonconformant devices with Linux too; sigh.
-			 */
-			info1 |= max_packet(maxp) << 16;
-			info2 |= (FUSBH200_TUNE_MULT_HS << 30);
-		} else {		/* PIPE_INTERRUPT */
-			info1 |= max_packet (maxp) << 16;
-			info2 |= hb_mult (maxp) << 30;
-		}
-		break;
-	default:
-		fusbh200_dbg(fusbh200, "bogus dev %p speed %d\n", urb->dev,
-			urb->dev->speed);
-done:
-		qh_destroy(fusbh200, qh);
-		return NULL;
-	}
-
-	/* NOTE:  if (PIPE_INTERRUPT) { scheduler sets s-mask } */
-
-	/* init as live, toggle clear, advance to dummy */
-	qh->qh_state = QH_STATE_IDLE;
-	hw = qh->hw;
-	hw->hw_info1 = cpu_to_hc32(fusbh200, info1);
-	hw->hw_info2 = cpu_to_hc32(fusbh200, info2);
-	qh->is_out = !is_input;
-	usb_settoggle (urb->dev, usb_pipeendpoint (urb->pipe), !is_input, 1);
-	qh_refresh (fusbh200, qh);
-	return qh;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void enable_async(struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->async_count++)
-		return;
-
-	/* Stop waiting to turn off the async schedule */
-	fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_ASYNC);
-
-	/* Don't start the schedule until ASS is 0 */
-	fusbh200_poll_ASS(fusbh200);
-	turn_on_io_watchdog(fusbh200);
-}
-
-static void disable_async(struct fusbh200_hcd *fusbh200)
-{
-	if (--fusbh200->async_count)
-		return;
-
-	/* The async schedule and async_unlink list are supposed to be empty */
-	WARN_ON(fusbh200->async->qh_next.qh || fusbh200->async_unlink);
-
-	/* Don't turn off the schedule until ASS is 1 */
-	fusbh200_poll_ASS(fusbh200);
-}
-
-/* move qh (and its qtds) onto async queue; maybe enable queue.  */
-
-static void qh_link_async (struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	__hc32		dma = QH_NEXT(fusbh200, qh->qh_dma);
-	struct fusbh200_qh	*head;
-
-	/* Don't link a QH if there's a Clear-TT-Buffer pending */
-	if (unlikely(qh->clearing_tt))
-		return;
-
-	WARN_ON(qh->qh_state != QH_STATE_IDLE);
-
-	/* clear halt and/or toggle; and maybe recover from silicon quirk */
-	qh_refresh(fusbh200, qh);
-
-	/* splice right after start */
-	head = fusbh200->async;
-	qh->qh_next = head->qh_next;
-	qh->hw->hw_next = head->hw->hw_next;
-	wmb ();
-
-	head->qh_next.qh = qh;
-	head->hw->hw_next = dma;
-
-	qh->xacterrs = 0;
-	qh->qh_state = QH_STATE_LINKED;
-	/* qtd completions reported later by interrupt */
-
-	enable_async(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * For control/bulk/interrupt, return QH with these TDs appended.
- * Allocates and initializes the QH if necessary.
- * Returns null if it can't allocate a QH it needs to.
- * If the QH has TDs (urbs) already, that's great.
- */
-static struct fusbh200_qh *qh_append_tds (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	int			epnum,
-	void			**ptr
-)
-{
-	struct fusbh200_qh		*qh = NULL;
-	__hc32			qh_addr_mask = cpu_to_hc32(fusbh200, 0x7f);
-
-	qh = (struct fusbh200_qh *) *ptr;
-	if (unlikely (qh == NULL)) {
-		/* can't sleep here, we have fusbh200->lock... */
-		qh = qh_make (fusbh200, urb, GFP_ATOMIC);
-		*ptr = qh;
-	}
-	if (likely (qh != NULL)) {
-		struct fusbh200_qtd	*qtd;
-
-		if (unlikely (list_empty (qtd_list)))
-			qtd = NULL;
-		else
-			qtd = list_entry (qtd_list->next, struct fusbh200_qtd,
-					qtd_list);
-
-		/* control qh may need patching ... */
-		if (unlikely (epnum == 0)) {
-
-                        /* usb_reset_device() briefly reverts to address 0 */
-                        if (usb_pipedevice (urb->pipe) == 0)
-				qh->hw->hw_info1 &= ~qh_addr_mask;
-		}
-
-		/* just one way to queue requests: swap with the dummy qtd.
-		 * only hc or qh_refresh() ever modify the overlay.
-		 */
-		if (likely (qtd != NULL)) {
-			struct fusbh200_qtd		*dummy;
-			dma_addr_t		dma;
-			__hc32			token;
-
-			/* to avoid racing the HC, use the dummy td instead of
-			 * the first td of our list (becomes new dummy).  both
-			 * tds stay deactivated until we're done, when the
-			 * HC is allowed to fetch the old dummy (4.10.2).
-			 */
-			token = qtd->hw_token;
-			qtd->hw_token = HALT_BIT(fusbh200);
-
-			dummy = qh->dummy;
-
-			dma = dummy->qtd_dma;
-			*dummy = *qtd;
-			dummy->qtd_dma = dma;
-
-			list_del (&qtd->qtd_list);
-			list_add (&dummy->qtd_list, qtd_list);
-			list_splice_tail(qtd_list, &qh->qtd_list);
-
-			fusbh200_qtd_init(fusbh200, qtd, qtd->qtd_dma);
-			qh->dummy = qtd;
-
-			/* hc must see the new dummy at list end */
-			dma = qtd->qtd_dma;
-			qtd = list_entry (qh->qtd_list.prev,
-					struct fusbh200_qtd, qtd_list);
-			qtd->hw_next = QTD_NEXT(fusbh200, dma);
-
-			/* let the hc process these next qtds */
-			wmb ();
-			dummy->hw_token = token;
-
-			urb->hcpriv = qh;
-		}
-	}
-	return qh;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int
-submit_async (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	gfp_t			mem_flags
-) {
-	int			epnum;
-	unsigned long		flags;
-	struct fusbh200_qh		*qh = NULL;
-	int			rc;
-
-	epnum = urb->ep->desc.bEndpointAddress;
-
-#ifdef FUSBH200_URB_TRACE
-	{
-		struct fusbh200_qtd *qtd;
-		qtd = list_entry(qtd_list->next, struct fusbh200_qtd, qtd_list);
-		fusbh200_dbg(fusbh200,
-			 "%s %s urb %p ep%d%s len %d, qtd %p [qh %p]\n",
-			 __func__, urb->dev->devpath, urb,
-			 epnum & 0x0f, (epnum & USB_DIR_IN) ? "in" : "out",
-			 urb->transfer_buffer_length,
-			 qtd, urb->ep->hcpriv);
-	}
-#endif
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
-		rc = -ESHUTDOWN;
-		goto done;
-	}
-	rc = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
-	if (unlikely(rc))
-		goto done;
-
-	qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv);
-	if (unlikely(qh == NULL)) {
-		usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-		rc = -ENOMEM;
-		goto done;
-	}
-
-	/* Control/bulk operations through TTs don't need scheduling,
-	 * the HC and TT handle it when the TT has a buffer ready.
-	 */
-	if (likely (qh->qh_state == QH_STATE_IDLE))
-		qh_link_async(fusbh200, qh);
- done:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	if (unlikely (qh == NULL))
-		qtd_list_free (fusbh200, urb, qtd_list);
-	return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void single_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qh		*prev;
-
-	/* Add to the end of the list of QHs waiting for the next IAAD */
-	qh->qh_state = QH_STATE_UNLINK;
-	if (fusbh200->async_unlink)
-		fusbh200->async_unlink_last->unlink_next = qh;
-	else
-		fusbh200->async_unlink = qh;
-	fusbh200->async_unlink_last = qh;
-
-	/* Unlink it from the schedule */
-	prev = fusbh200->async;
-	while (prev->qh_next.qh != qh)
-		prev = prev->qh_next.qh;
-
-	prev->hw->hw_next = qh->hw->hw_next;
-	prev->qh_next = qh->qh_next;
-	if (fusbh200->qh_scan_next == qh)
-		fusbh200->qh_scan_next = qh->qh_next.qh;
-}
-
-static void start_iaa_cycle(struct fusbh200_hcd *fusbh200, bool nested)
-{
-	/*
-	 * Do nothing if an IAA cycle is already running or
-	 * if one will be started shortly.
-	 */
-	if (fusbh200->async_iaa || fusbh200->async_unlinking)
-		return;
-
-	/* Do all the waiting QHs at once */
-	fusbh200->async_iaa = fusbh200->async_unlink;
-	fusbh200->async_unlink = NULL;
-
-	/* If the controller isn't running, we don't have to wait for it */
-	if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING)) {
-		if (!nested)		/* Avoid recursion */
-			end_unlink_async(fusbh200);
-
-	/* Otherwise start a new IAA cycle */
-	} else if (likely(fusbh200->rh_state == FUSBH200_RH_RUNNING)) {
-		/* Make sure the unlinks are all visible to the hardware */
-		wmb();
-
-		fusbh200_writel(fusbh200, fusbh200->command | CMD_IAAD,
-				&fusbh200->regs->command);
-		fusbh200_readl(fusbh200, &fusbh200->regs->command);
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_IAA_WATCHDOG, true);
-	}
-}
-
-/* the async qh for the qtds being unlinked are now gone from the HC */
-
-static void end_unlink_async(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh;
-
-	/* Process the idle QHs */
- restart:
-	fusbh200->async_unlinking = true;
-	while (fusbh200->async_iaa) {
-		qh = fusbh200->async_iaa;
-		fusbh200->async_iaa = qh->unlink_next;
-		qh->unlink_next = NULL;
-
-		qh->qh_state = QH_STATE_IDLE;
-		qh->qh_next.qh = NULL;
-
-		qh_completions(fusbh200, qh);
-		if (!list_empty(&qh->qtd_list) &&
-				fusbh200->rh_state == FUSBH200_RH_RUNNING)
-			qh_link_async(fusbh200, qh);
-		disable_async(fusbh200);
-	}
-	fusbh200->async_unlinking = false;
-
-	/* Start a new IAA cycle if any QHs are waiting for it */
-	if (fusbh200->async_unlink) {
-		start_iaa_cycle(fusbh200, true);
-		if (unlikely(fusbh200->rh_state < FUSBH200_RH_RUNNING))
-			goto restart;
-	}
-}
-
-static void unlink_empty_async(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh, *next;
-	bool			stopped = (fusbh200->rh_state < FUSBH200_RH_RUNNING);
-	bool			check_unlinks_later = false;
-
-	/* Unlink all the async QHs that have been empty for a timer cycle */
-	next = fusbh200->async->qh_next.qh;
-	while (next) {
-		qh = next;
-		next = qh->qh_next.qh;
-
-		if (list_empty(&qh->qtd_list) &&
-				qh->qh_state == QH_STATE_LINKED) {
-			if (!stopped && qh->unlink_cycle ==
-					fusbh200->async_unlink_cycle)
-				check_unlinks_later = true;
-			else
-				single_unlink_async(fusbh200, qh);
-		}
-	}
-
-	/* Start a new IAA cycle if any QHs are waiting for it */
-	if (fusbh200->async_unlink)
-		start_iaa_cycle(fusbh200, false);
-
-	/* QHs that haven't been empty for long enough will be handled later */
-	if (check_unlinks_later) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true);
-		++fusbh200->async_unlink_cycle;
-	}
-}
-
-/* makes sure the async qh will become idle */
-/* caller must own fusbh200->lock */
-
-static void start_unlink_async(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	/*
-	 * If the QH isn't linked then there's nothing we can do
-	 * unless we were called during a giveback, in which case
-	 * qh_completions() has to deal with it.
-	 */
-	if (qh->qh_state != QH_STATE_LINKED) {
-		if (qh->qh_state == QH_STATE_COMPLETING)
-			qh->needs_rescan = 1;
-		return;
-	}
-
-	single_unlink_async(fusbh200, qh);
-	start_iaa_cycle(fusbh200, false);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void scan_async (struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh;
-	bool			check_unlinks_later = false;
-
-	fusbh200->qh_scan_next = fusbh200->async->qh_next.qh;
-	while (fusbh200->qh_scan_next) {
-		qh = fusbh200->qh_scan_next;
-		fusbh200->qh_scan_next = qh->qh_next.qh;
- rescan:
-		/* clean any finished work for this qh */
-		if (!list_empty(&qh->qtd_list)) {
-			int temp;
-
-			/*
-			 * Unlinks could happen here; completion reporting
-			 * drops the lock.  That's why fusbh200->qh_scan_next
-			 * always holds the next qh to scan; if the next qh
-			 * gets unlinked then fusbh200->qh_scan_next is adjusted
-			 * in single_unlink_async().
-			 */
-			temp = qh_completions(fusbh200, qh);
-			if (qh->needs_rescan) {
-				start_unlink_async(fusbh200, qh);
-			} else if (list_empty(&qh->qtd_list)
-					&& qh->qh_state == QH_STATE_LINKED) {
-				qh->unlink_cycle = fusbh200->async_unlink_cycle;
-				check_unlinks_later = true;
-			} else if (temp != 0)
-				goto rescan;
-		}
-	}
-
-	/*
-	 * Unlink empty entries, reducing DMA usage as well
-	 * as HCD schedule-scanning costs.  Delay for any qh
-	 * we just scanned, there's a not-unusual case that it
-	 * doesn't stay idle for long.
-	 */
-	if (check_unlinks_later && fusbh200->rh_state == FUSBH200_RH_RUNNING &&
-			!(fusbh200->enabled_hrtimer_events &
-				BIT(FUSBH200_HRTIMER_ASYNC_UNLINKS))) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_ASYNC_UNLINKS, true);
-		++fusbh200->async_unlink_cycle;
-	}
-}
-/*-------------------------------------------------------------------------*/
-/*
- * EHCI scheduled transaction support:  interrupt, iso, split iso
- * These are called "periodic" transactions in the EHCI spec.
- *
- * Note that for interrupt transfers, the QH/QTD manipulation is shared
- * with the "asynchronous" transaction support (control/bulk transfers).
- * The only real difference is in how interrupt transfers are scheduled.
- *
- * For ISO, we make an "iso_stream" head to serve the same role as a QH.
- * It keeps track of every ITD (or SITD) that's linked, and holds enough
- * pre-calculated schedule data to make appending to the queue be quick.
- */
-
-static int fusbh200_get_frame (struct usb_hcd *hcd);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * periodic_next_shadow - return "next" pointer on shadow list
- * @periodic: host pointer to qh/itd
- * @tag: hardware tag for type of this record
- */
-static union fusbh200_shadow *
-periodic_next_shadow(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic,
-		__hc32 tag)
-{
-	switch (hc32_to_cpu(fusbh200, tag)) {
-	case Q_TYPE_QH:
-		return &periodic->qh->qh_next;
-	case Q_TYPE_FSTN:
-		return &periodic->fstn->fstn_next;
-	default:
-		return &periodic->itd->itd_next;
-	}
-}
-
-static __hc32 *
-shadow_next_periodic(struct fusbh200_hcd *fusbh200, union fusbh200_shadow *periodic,
-		__hc32 tag)
-{
-	switch (hc32_to_cpu(fusbh200, tag)) {
-	/* our fusbh200_shadow.qh is actually software part */
-	case Q_TYPE_QH:
-		return &periodic->qh->hw->hw_next;
-	/* others are hw parts */
-	default:
-		return periodic->hw_next;
-	}
-}
-
-/* caller must hold fusbh200->lock */
-static void periodic_unlink (struct fusbh200_hcd *fusbh200, unsigned frame, void *ptr)
-{
-	union fusbh200_shadow	*prev_p = &fusbh200->pshadow[frame];
-	__hc32			*hw_p = &fusbh200->periodic[frame];
-	union fusbh200_shadow	here = *prev_p;
-
-	/* find predecessor of "ptr"; hw and shadow lists are in sync */
-	while (here.ptr && here.ptr != ptr) {
-		prev_p = periodic_next_shadow(fusbh200, prev_p,
-				Q_NEXT_TYPE(fusbh200, *hw_p));
-		hw_p = shadow_next_periodic(fusbh200, &here,
-				Q_NEXT_TYPE(fusbh200, *hw_p));
-		here = *prev_p;
-	}
-	/* an interrupt entry (at list end) could have been shared */
-	if (!here.ptr)
-		return;
-
-	/* update shadow and hardware lists ... the old "next" pointers
-	 * from ptr may still be in use, the caller updates them.
-	 */
-	*prev_p = *periodic_next_shadow(fusbh200, &here,
-			Q_NEXT_TYPE(fusbh200, *hw_p));
-
-	*hw_p = *shadow_next_periodic(fusbh200, &here,
-				Q_NEXT_TYPE(fusbh200, *hw_p));
-}
-
-/* how many of the uframe's 125 usecs are allocated? */
-static unsigned short
-periodic_usecs (struct fusbh200_hcd *fusbh200, unsigned frame, unsigned uframe)
-{
-	__hc32			*hw_p = &fusbh200->periodic [frame];
-	union fusbh200_shadow	*q = &fusbh200->pshadow [frame];
-	unsigned		usecs = 0;
-	struct fusbh200_qh_hw	*hw;
-
-	while (q->ptr) {
-		switch (hc32_to_cpu(fusbh200, Q_NEXT_TYPE(fusbh200, *hw_p))) {
-		case Q_TYPE_QH:
-			hw = q->qh->hw;
-			/* is it in the S-mask? */
-			if (hw->hw_info2 & cpu_to_hc32(fusbh200, 1 << uframe))
-				usecs += q->qh->usecs;
-			/* ... or C-mask? */
-			if (hw->hw_info2 & cpu_to_hc32(fusbh200,
-					1 << (8 + uframe)))
-				usecs += q->qh->c_usecs;
-			hw_p = &hw->hw_next;
-			q = &q->qh->qh_next;
-			break;
-		// case Q_TYPE_FSTN:
-		default:
-			/* for "save place" FSTNs, count the relevant INTR
-			 * bandwidth from the previous frame
-			 */
-			if (q->fstn->hw_prev != FUSBH200_LIST_END(fusbh200)) {
-				fusbh200_dbg (fusbh200, "ignoring FSTN cost ...\n");
-			}
-			hw_p = &q->fstn->hw_next;
-			q = &q->fstn->fstn_next;
-			break;
-		case Q_TYPE_ITD:
-			if (q->itd->hw_transaction[uframe])
-				usecs += q->itd->stream->usecs;
-			hw_p = &q->itd->hw_next;
-			q = &q->itd->itd_next;
-			break;
-		}
-	}
-	if (usecs > fusbh200->uframe_periodic_max)
-		fusbh200_err (fusbh200, "uframe %d sched overrun: %d usecs\n",
-			frame * 8 + uframe, usecs);
-	return usecs;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int same_tt (struct usb_device *dev1, struct usb_device *dev2)
-{
-	if (!dev1->tt || !dev2->tt)
-		return 0;
-	if (dev1->tt != dev2->tt)
-		return 0;
-	if (dev1->tt->multi)
-		return dev1->ttport == dev2->ttport;
-	else
-		return 1;
-}
-
-/* return true iff the device's transaction translator is available
- * for a periodic transfer starting at the specified frame, using
- * all the uframes in the mask.
- */
-static int tt_no_collision (
-	struct fusbh200_hcd		*fusbh200,
-	unsigned		period,
-	struct usb_device	*dev,
-	unsigned		frame,
-	u32			uf_mask
-)
-{
-	if (period == 0)	/* error */
-		return 0;
-
-	/* note bandwidth wastage:  split never follows csplit
-	 * (different dev or endpoint) until the next uframe.
-	 * calling convention doesn't make that distinction.
-	 */
-	for (; frame < fusbh200->periodic_size; frame += period) {
-		union fusbh200_shadow	here;
-		__hc32			type;
-		struct fusbh200_qh_hw	*hw;
-
-		here = fusbh200->pshadow [frame];
-		type = Q_NEXT_TYPE(fusbh200, fusbh200->periodic [frame]);
-		while (here.ptr) {
-			switch (hc32_to_cpu(fusbh200, type)) {
-			case Q_TYPE_ITD:
-				type = Q_NEXT_TYPE(fusbh200, here.itd->hw_next);
-				here = here.itd->itd_next;
-				continue;
-			case Q_TYPE_QH:
-				hw = here.qh->hw;
-				if (same_tt (dev, here.qh->dev)) {
-					u32		mask;
-
-					mask = hc32_to_cpu(fusbh200,
-							hw->hw_info2);
-					/* "knows" no gap is needed */
-					mask |= mask >> 8;
-					if (mask & uf_mask)
-						break;
-				}
-				type = Q_NEXT_TYPE(fusbh200, hw->hw_next);
-				here = here.qh->qh_next;
-				continue;
-			// case Q_TYPE_FSTN:
-			default:
-				fusbh200_dbg (fusbh200,
-					"periodic frame %d bogus type %d\n",
-					frame, type);
-			}
-
-			/* collision or error */
-			return 0;
-		}
-	}
-
-	/* no collision */
-	return 1;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void enable_periodic(struct fusbh200_hcd *fusbh200)
-{
-	if (fusbh200->periodic_count++)
-		return;
-
-	/* Stop waiting to turn off the periodic schedule */
-	fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_DISABLE_PERIODIC);
-
-	/* Don't start the schedule until PSS is 0 */
-	fusbh200_poll_PSS(fusbh200);
-	turn_on_io_watchdog(fusbh200);
-}
-
-static void disable_periodic(struct fusbh200_hcd *fusbh200)
-{
-	if (--fusbh200->periodic_count)
-		return;
-
-	/* Don't turn off the schedule until PSS is 1 */
-	fusbh200_poll_PSS(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* periodic schedule slots have iso tds (normal or split) first, then a
- * sparse tree for active interrupt transfers.
- *
- * this just links in a qh; caller guarantees uframe masks are set right.
- * no FSTN support (yet; fusbh200 0.96+)
- */
-static void qh_link_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	unsigned	i;
-	unsigned	period = qh->period;
-
-	dev_dbg (&qh->dev->dev,
-		"link qh%d-%04x/%p start %d [%d/%d us]\n",
-		period, hc32_to_cpup(fusbh200, &qh->hw->hw_info2)
-			& (QH_CMASK | QH_SMASK),
-		qh, qh->start, qh->usecs, qh->c_usecs);
-
-	/* high bandwidth, or otherwise every microframe */
-	if (period == 0)
-		period = 1;
-
-	for (i = qh->start; i < fusbh200->periodic_size; i += period) {
-		union fusbh200_shadow	*prev = &fusbh200->pshadow[i];
-		__hc32			*hw_p = &fusbh200->periodic[i];
-		union fusbh200_shadow	here = *prev;
-		__hc32			type = 0;
-
-		/* skip the iso nodes at list head */
-		while (here.ptr) {
-			type = Q_NEXT_TYPE(fusbh200, *hw_p);
-			if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH))
-				break;
-			prev = periodic_next_shadow(fusbh200, prev, type);
-			hw_p = shadow_next_periodic(fusbh200, &here, type);
-			here = *prev;
-		}
-
-		/* sorting each branch by period (slow-->fast)
-		 * enables sharing interior tree nodes
-		 */
-		while (here.ptr && qh != here.qh) {
-			if (qh->period > here.qh->period)
-				break;
-			prev = &here.qh->qh_next;
-			hw_p = &here.qh->hw->hw_next;
-			here = *prev;
-		}
-		/* link in this qh, unless some earlier pass did that */
-		if (qh != here.qh) {
-			qh->qh_next = here;
-			if (here.qh)
-				qh->hw->hw_next = *hw_p;
-			wmb ();
-			prev->qh = qh;
-			*hw_p = QH_NEXT (fusbh200, qh->qh_dma);
-		}
-	}
-	qh->qh_state = QH_STATE_LINKED;
-	qh->xacterrs = 0;
-
-	/* update per-qh bandwidth for usbfs */
-	fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated += qh->period
-		? ((qh->usecs + qh->c_usecs) / qh->period)
-		: (qh->usecs * 8);
-
-	list_add(&qh->intr_node, &fusbh200->intr_qh_list);
-
-	/* maybe enable periodic schedule processing */
-	++fusbh200->intr_count;
-	enable_periodic(fusbh200);
-}
-
-static void qh_unlink_periodic(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	unsigned	i;
-	unsigned	period;
-
-	/*
-	 * If qh is for a low/full-speed device, simply unlinking it
-	 * could interfere with an ongoing split transaction.  To unlink
-	 * it safely would require setting the QH_INACTIVATE bit and
-	 * waiting at least one frame, as described in EHCI 4.12.2.5.
-	 *
-	 * We won't bother with any of this.  Instead, we assume that the
-	 * only reason for unlinking an interrupt QH while the current URB
-	 * is still active is to dequeue all the URBs (flush the whole
-	 * endpoint queue).
-	 *
-	 * If rebalancing the periodic schedule is ever implemented, this
-	 * approach will no longer be valid.
-	 */
-
-	/* high bandwidth, or otherwise part of every microframe */
-	if ((period = qh->period) == 0)
-		period = 1;
-
-	for (i = qh->start; i < fusbh200->periodic_size; i += period)
-		periodic_unlink (fusbh200, i, qh);
-
-	/* update per-qh bandwidth for usbfs */
-	fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated -= qh->period
-		? ((qh->usecs + qh->c_usecs) / qh->period)
-		: (qh->usecs * 8);
-
-	dev_dbg (&qh->dev->dev,
-		"unlink qh%d-%04x/%p start %d [%d/%d us]\n",
-		qh->period,
-		hc32_to_cpup(fusbh200, &qh->hw->hw_info2) & (QH_CMASK | QH_SMASK),
-		qh, qh->start, qh->usecs, qh->c_usecs);
-
-	/* qh->qh_next still "live" to HC */
-	qh->qh_state = QH_STATE_UNLINK;
-	qh->qh_next.ptr = NULL;
-
-	if (fusbh200->qh_scan_next == qh)
-		fusbh200->qh_scan_next = list_entry(qh->intr_node.next,
-				struct fusbh200_qh, intr_node);
-	list_del(&qh->intr_node);
-}
-
-static void start_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	/* If the QH isn't linked then there's nothing we can do
-	 * unless we were called during a giveback, in which case
-	 * qh_completions() has to deal with it.
-	 */
-	if (qh->qh_state != QH_STATE_LINKED) {
-		if (qh->qh_state == QH_STATE_COMPLETING)
-			qh->needs_rescan = 1;
-		return;
-	}
-
-	qh_unlink_periodic (fusbh200, qh);
-
-	/* Make sure the unlinks are visible before starting the timer */
-	wmb();
-
-	/*
-	 * The EHCI spec doesn't say how long it takes the controller to
-	 * stop accessing an unlinked interrupt QH.  The timer delay is
-	 * 9 uframes; presumably that will be long enough.
-	 */
-	qh->unlink_cycle = fusbh200->intr_unlink_cycle;
-
-	/* New entries go at the end of the intr_unlink list */
-	if (fusbh200->intr_unlink)
-		fusbh200->intr_unlink_last->unlink_next = qh;
-	else
-		fusbh200->intr_unlink = qh;
-	fusbh200->intr_unlink_last = qh;
-
-	if (fusbh200->intr_unlinking)
-		;	/* Avoid recursive calls */
-	else if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
-		fusbh200_handle_intr_unlinks(fusbh200);
-	else if (fusbh200->intr_unlink == qh) {
-		fusbh200_enable_event(fusbh200, FUSBH200_HRTIMER_UNLINK_INTR, true);
-		++fusbh200->intr_unlink_cycle;
-	}
-}
-
-static void end_unlink_intr(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	struct fusbh200_qh_hw	*hw = qh->hw;
-	int			rc;
-
-	qh->qh_state = QH_STATE_IDLE;
-	hw->hw_next = FUSBH200_LIST_END(fusbh200);
-
-	qh_completions(fusbh200, qh);
-
-	/* reschedule QH iff another request is queued */
-	if (!list_empty(&qh->qtd_list) && fusbh200->rh_state == FUSBH200_RH_RUNNING) {
-		rc = qh_schedule(fusbh200, qh);
-
-		/* An error here likely indicates handshake failure
-		 * or no space left in the schedule.  Neither fault
-		 * should happen often ...
-		 *
-		 * FIXME kill the now-dysfunctional queued urbs
-		 */
-		if (rc != 0)
-			fusbh200_err(fusbh200, "can't reschedule qh %p, err %d\n",
-					qh, rc);
-	}
-
-	/* maybe turn off periodic schedule */
-	--fusbh200->intr_count;
-	disable_periodic(fusbh200);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int check_period (
-	struct fusbh200_hcd *fusbh200,
-	unsigned	frame,
-	unsigned	uframe,
-	unsigned	period,
-	unsigned	usecs
-) {
-	int		claimed;
-
-	/* complete split running into next frame?
-	 * given FSTN support, we could sometimes check...
-	 */
-	if (uframe >= 8)
-		return 0;
-
-	/* convert "usecs we need" to "max already claimed" */
-	usecs = fusbh200->uframe_periodic_max - usecs;
-
-	/* we "know" 2 and 4 uframe intervals were rejected; so
-	 * for period 0, check _every_ microframe in the schedule.
-	 */
-	if (unlikely (period == 0)) {
-		do {
-			for (uframe = 0; uframe < 7; uframe++) {
-				claimed = periodic_usecs (fusbh200, frame, uframe);
-				if (claimed > usecs)
-					return 0;
-			}
-		} while ((frame += 1) < fusbh200->periodic_size);
-
-	/* just check the specified uframe, at that period */
-	} else {
-		do {
-			claimed = periodic_usecs (fusbh200, frame, uframe);
-			if (claimed > usecs)
-				return 0;
-		} while ((frame += period) < fusbh200->periodic_size);
-	}
-
-	// success!
-	return 1;
-}
-
-static int check_intr_schedule (
-	struct fusbh200_hcd		*fusbh200,
-	unsigned		frame,
-	unsigned		uframe,
-	const struct fusbh200_qh	*qh,
-	__hc32			*c_maskp
-)
-{
-	int		retval = -ENOSPC;
-	u8		mask = 0;
-
-	if (qh->c_usecs && uframe >= 6)		/* FSTN territory? */
-		goto done;
-
-	if (!check_period (fusbh200, frame, uframe, qh->period, qh->usecs))
-		goto done;
-	if (!qh->c_usecs) {
-		retval = 0;
-		*c_maskp = 0;
-		goto done;
-	}
-
-	/* Make sure this tt's buffer is also available for CSPLITs.
-	 * We pessimize a bit; probably the typical full speed case
-	 * doesn't need the second CSPLIT.
-	 *
-	 * NOTE:  both SPLIT and CSPLIT could be checked in just
-	 * one smart pass...
-	 */
-	mask = 0x03 << (uframe + qh->gap_uf);
-	*c_maskp = cpu_to_hc32(fusbh200, mask << 8);
-
-	mask |= 1 << uframe;
-	if (tt_no_collision (fusbh200, qh->period, qh->dev, frame, mask)) {
-		if (!check_period (fusbh200, frame, uframe + qh->gap_uf + 1,
-					qh->period, qh->c_usecs))
-			goto done;
-		if (!check_period (fusbh200, frame, uframe + qh->gap_uf,
-					qh->period, qh->c_usecs))
-			goto done;
-		retval = 0;
-	}
-done:
-	return retval;
-}
-
-/* "first fit" scheduling policy used the first time through,
- * or when the previous schedule slot can't be re-used.
- */
-static int qh_schedule(struct fusbh200_hcd *fusbh200, struct fusbh200_qh *qh)
-{
-	int		status;
-	unsigned	uframe;
-	__hc32		c_mask;
-	unsigned	frame;		/* 0..(qh->period - 1), or NO_FRAME */
-	struct fusbh200_qh_hw	*hw = qh->hw;
-
-	qh_refresh(fusbh200, qh);
-	hw->hw_next = FUSBH200_LIST_END(fusbh200);
-	frame = qh->start;
-
-	/* reuse the previous schedule slots, if we can */
-	if (frame < qh->period) {
-		uframe = ffs(hc32_to_cpup(fusbh200, &hw->hw_info2) & QH_SMASK);
-		status = check_intr_schedule (fusbh200, frame, --uframe,
-				qh, &c_mask);
-	} else {
-		uframe = 0;
-		c_mask = 0;
-		status = -ENOSPC;
-	}
-
-	/* else scan the schedule to find a group of slots such that all
-	 * uframes have enough periodic bandwidth available.
-	 */
-	if (status) {
-		/* "normal" case, uframing flexible except with splits */
-		if (qh->period) {
-			int		i;
-
-			for (i = qh->period; status && i > 0; --i) {
-				frame = ++fusbh200->random_frame % qh->period;
-				for (uframe = 0; uframe < 8; uframe++) {
-					status = check_intr_schedule (fusbh200,
-							frame, uframe, qh,
-							&c_mask);
-					if (status == 0)
-						break;
-				}
-			}
-
-		/* qh->period == 0 means every uframe */
-		} else {
-			frame = 0;
-			status = check_intr_schedule (fusbh200, 0, 0, qh, &c_mask);
-		}
-		if (status)
-			goto done;
-		qh->start = frame;
-
-		/* reset S-frame and (maybe) C-frame masks */
-		hw->hw_info2 &= cpu_to_hc32(fusbh200, ~(QH_CMASK | QH_SMASK));
-		hw->hw_info2 |= qh->period
-			? cpu_to_hc32(fusbh200, 1 << uframe)
-			: cpu_to_hc32(fusbh200, QH_SMASK);
-		hw->hw_info2 |= c_mask;
-	} else
-		fusbh200_dbg (fusbh200, "reused qh %p schedule\n", qh);
-
-	/* stuff into the periodic schedule */
-	qh_link_periodic(fusbh200, qh);
-done:
-	return status;
-}
-
-static int intr_submit (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct list_head	*qtd_list,
-	gfp_t			mem_flags
-) {
-	unsigned		epnum;
-	unsigned long		flags;
-	struct fusbh200_qh		*qh;
-	int			status;
-	struct list_head	empty;
-
-	/* get endpoint and transfer/schedule data */
-	epnum = urb->ep->desc.bEndpointAddress;
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
-		status = -ESHUTDOWN;
-		goto done_not_linked;
-	}
-	status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
-	if (unlikely(status))
-		goto done_not_linked;
-
-	/* get qh and force any scheduling errors */
-	INIT_LIST_HEAD (&empty);
-	qh = qh_append_tds(fusbh200, urb, &empty, epnum, &urb->ep->hcpriv);
-	if (qh == NULL) {
-		status = -ENOMEM;
-		goto done;
-	}
-	if (qh->qh_state == QH_STATE_IDLE) {
-		if ((status = qh_schedule (fusbh200, qh)) != 0)
-			goto done;
-	}
-
-	/* then queue the urb's tds to the qh */
-	qh = qh_append_tds(fusbh200, urb, qtd_list, epnum, &urb->ep->hcpriv);
-	BUG_ON (qh == NULL);
-
-	/* ... update usbfs periodic stats */
-	fusbh200_to_hcd(fusbh200)->self.bandwidth_int_reqs++;
-
-done:
-	if (unlikely(status))
-		usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
-done_not_linked:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	if (status)
-		qtd_list_free (fusbh200, urb, qtd_list);
-
-	return status;
-}
-
-static void scan_intr(struct fusbh200_hcd *fusbh200)
-{
-	struct fusbh200_qh		*qh;
-
-	list_for_each_entry_safe(qh, fusbh200->qh_scan_next, &fusbh200->intr_qh_list,
-			intr_node) {
- rescan:
-		/* clean any finished work for this qh */
-		if (!list_empty(&qh->qtd_list)) {
-			int temp;
-
-			/*
-			 * Unlinks could happen here; completion reporting
-			 * drops the lock.  That's why fusbh200->qh_scan_next
-			 * always holds the next qh to scan; if the next qh
-			 * gets unlinked then fusbh200->qh_scan_next is adjusted
-			 * in qh_unlink_periodic().
-			 */
-			temp = qh_completions(fusbh200, qh);
-			if (unlikely(qh->needs_rescan ||
-					(list_empty(&qh->qtd_list) &&
-						qh->qh_state == QH_STATE_LINKED)))
-				start_unlink_intr(fusbh200, qh);
-			else if (temp != 0)
-				goto rescan;
-		}
-	}
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* fusbh200_iso_stream ops work with both ITD and SITD */
-
-static struct fusbh200_iso_stream *
-iso_stream_alloc (gfp_t mem_flags)
-{
-	struct fusbh200_iso_stream *stream;
-
-	stream = kzalloc(sizeof *stream, mem_flags);
-	if (likely (stream != NULL)) {
-		INIT_LIST_HEAD(&stream->td_list);
-		INIT_LIST_HEAD(&stream->free_list);
-		stream->next_uframe = -1;
-	}
-	return stream;
-}
-
-static void
-iso_stream_init (
-	struct fusbh200_hcd		*fusbh200,
-	struct fusbh200_iso_stream	*stream,
-	struct usb_device	*dev,
-	int			pipe,
-	unsigned		interval
-)
-{
-	u32			buf1;
-	unsigned		epnum, maxp;
-	int			is_input;
-	long			bandwidth;
-	unsigned 		multi;
-
-	/*
-	 * this might be a "high bandwidth" highspeed endpoint,
-	 * as encoded in the ep descriptor's wMaxPacket field
-	 */
-	epnum = usb_pipeendpoint (pipe);
-	is_input = usb_pipein (pipe) ? USB_DIR_IN : 0;
-	maxp = usb_maxpacket(dev, pipe, !is_input);
-	if (is_input) {
-		buf1 = (1 << 11);
-	} else {
-		buf1 = 0;
-	}
-
-	maxp = max_packet(maxp);
-	multi = hb_mult(maxp);
-	buf1 |= maxp;
-	maxp *= multi;
-
-	stream->buf0 = cpu_to_hc32(fusbh200, (epnum << 8) | dev->devnum);
-	stream->buf1 = cpu_to_hc32(fusbh200, buf1);
-	stream->buf2 = cpu_to_hc32(fusbh200, multi);
-
-	/* usbfs wants to report the average usecs per frame tied up
-	 * when transfers on this endpoint are scheduled ...
-	 */
-	if (dev->speed == USB_SPEED_FULL) {
-		interval <<= 3;
-		stream->usecs = NS_TO_US(usb_calc_bus_time(dev->speed,
-				is_input, 1, maxp));
-		stream->usecs /= 8;
-	} else {
-		stream->highspeed = 1;
-		stream->usecs = HS_USECS_ISO (maxp);
-	}
-	bandwidth = stream->usecs * 8;
-	bandwidth /= interval;
-
-	stream->bandwidth = bandwidth;
-	stream->udev = dev;
-	stream->bEndpointAddress = is_input | epnum;
-	stream->interval = interval;
-	stream->maxp = maxp;
-}
-
-static struct fusbh200_iso_stream *
-iso_stream_find (struct fusbh200_hcd *fusbh200, struct urb *urb)
-{
-	unsigned		epnum;
-	struct fusbh200_iso_stream	*stream;
-	struct usb_host_endpoint *ep;
-	unsigned long		flags;
-
-	epnum = usb_pipeendpoint (urb->pipe);
-	if (usb_pipein(urb->pipe))
-		ep = urb->dev->ep_in[epnum];
-	else
-		ep = urb->dev->ep_out[epnum];
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	stream = ep->hcpriv;
-
-	if (unlikely (stream == NULL)) {
-		stream = iso_stream_alloc(GFP_ATOMIC);
-		if (likely (stream != NULL)) {
-			ep->hcpriv = stream;
-			stream->ep = ep;
-			iso_stream_init(fusbh200, stream, urb->dev, urb->pipe,
-					urb->interval);
-		}
-
-	/* if dev->ep [epnum] is a QH, hw is set */
-	} else if (unlikely (stream->hw != NULL)) {
-		fusbh200_dbg (fusbh200, "dev %s ep%d%s, not iso??\n",
-			urb->dev->devpath, epnum,
-			usb_pipein(urb->pipe) ? "in" : "out");
-		stream = NULL;
-	}
-
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return stream;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* fusbh200_iso_sched ops can be ITD-only or SITD-only */
-
-static struct fusbh200_iso_sched *
-iso_sched_alloc (unsigned packets, gfp_t mem_flags)
-{
-	struct fusbh200_iso_sched	*iso_sched;
-	int			size = sizeof *iso_sched;
-
-	size += packets * sizeof (struct fusbh200_iso_packet);
-	iso_sched = kzalloc(size, mem_flags);
-	if (likely (iso_sched != NULL)) {
-		INIT_LIST_HEAD (&iso_sched->td_list);
-	}
-	return iso_sched;
-}
-
-static inline void
-itd_sched_init(
-	struct fusbh200_hcd		*fusbh200,
-	struct fusbh200_iso_sched	*iso_sched,
-	struct fusbh200_iso_stream	*stream,
-	struct urb		*urb
-)
-{
-	unsigned	i;
-	dma_addr_t	dma = urb->transfer_dma;
-
-	/* how many uframes are needed for these transfers */
-	iso_sched->span = urb->number_of_packets * stream->interval;
-
-	/* figure out per-uframe itd fields that we'll need later
-	 * when we fit new itds into the schedule.
-	 */
-	for (i = 0; i < urb->number_of_packets; i++) {
-		struct fusbh200_iso_packet	*uframe = &iso_sched->packet [i];
-		unsigned		length;
-		dma_addr_t		buf;
-		u32			trans;
-
-		length = urb->iso_frame_desc [i].length;
-		buf = dma + urb->iso_frame_desc [i].offset;
-
-		trans = FUSBH200_ISOC_ACTIVE;
-		trans |= buf & 0x0fff;
-		if (unlikely (((i + 1) == urb->number_of_packets))
-				&& !(urb->transfer_flags & URB_NO_INTERRUPT))
-			trans |= FUSBH200_ITD_IOC;
-		trans |= length << 16;
-		uframe->transaction = cpu_to_hc32(fusbh200, trans);
-
-		/* might need to cross a buffer page within a uframe */
-		uframe->bufp = (buf & ~(u64)0x0fff);
-		buf += length;
-		if (unlikely ((uframe->bufp != (buf & ~(u64)0x0fff))))
-			uframe->cross = 1;
-	}
-}
-
-static void
-iso_sched_free (
-	struct fusbh200_iso_stream	*stream,
-	struct fusbh200_iso_sched	*iso_sched
-)
-{
-	if (!iso_sched)
-		return;
-	// caller must hold fusbh200->lock!
-	list_splice (&iso_sched->td_list, &stream->free_list);
-	kfree (iso_sched);
-}
-
-static int
-itd_urb_transaction (
-	struct fusbh200_iso_stream	*stream,
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	gfp_t			mem_flags
-)
-{
-	struct fusbh200_itd		*itd;
-	dma_addr_t		itd_dma;
-	int			i;
-	unsigned		num_itds;
-	struct fusbh200_iso_sched	*sched;
-	unsigned long		flags;
-
-	sched = iso_sched_alloc (urb->number_of_packets, mem_flags);
-	if (unlikely (sched == NULL))
-		return -ENOMEM;
-
-	itd_sched_init(fusbh200, sched, stream, urb);
-
-	if (urb->interval < 8)
-		num_itds = 1 + (sched->span + 7) / 8;
-	else
-		num_itds = urb->number_of_packets;
-
-	/* allocate/init ITDs */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	for (i = 0; i < num_itds; i++) {
-
-		/*
-		 * Use iTDs from the free list, but not iTDs that may
-		 * still be in use by the hardware.
-		 */
-		if (likely(!list_empty(&stream->free_list))) {
-			itd = list_first_entry(&stream->free_list,
-					struct fusbh200_itd, itd_list);
-			if (itd->frame == fusbh200->now_frame)
-				goto alloc_itd;
-			list_del (&itd->itd_list);
-			itd_dma = itd->itd_dma;
-		} else {
- alloc_itd:
-			spin_unlock_irqrestore (&fusbh200->lock, flags);
-			itd = dma_pool_alloc (fusbh200->itd_pool, mem_flags,
-					&itd_dma);
-			spin_lock_irqsave (&fusbh200->lock, flags);
-			if (!itd) {
-				iso_sched_free(stream, sched);
-				spin_unlock_irqrestore(&fusbh200->lock, flags);
-				return -ENOMEM;
-			}
-		}
-
-		memset (itd, 0, sizeof *itd);
-		itd->itd_dma = itd_dma;
-		list_add (&itd->itd_list, &sched->td_list);
-	}
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-
-	/* temporarily store schedule info in hcpriv */
-	urb->hcpriv = sched;
-	urb->error_count = 0;
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline int
-itd_slot_ok (
-	struct fusbh200_hcd		*fusbh200,
-	u32			mod,
-	u32			uframe,
-	u8			usecs,
-	u32			period
-)
-{
-	uframe %= period;
-	do {
-		/* can't commit more than uframe_periodic_max usec */
-		if (periodic_usecs (fusbh200, uframe >> 3, uframe & 0x7)
-				> (fusbh200->uframe_periodic_max - usecs))
-			return 0;
-
-		/* we know urb->interval is 2^N uframes */
-		uframe += period;
-	} while (uframe < mod);
-	return 1;
-}
-
-/*
- * This scheduler plans almost as far into the future as it has actual
- * periodic schedule slots.  (Affected by TUNE_FLS, which defaults to
- * "as small as possible" to be cache-friendlier.)  That limits the size
- * transfers you can stream reliably; avoid more than 64 msec per urb.
- * Also avoid queue depths of less than fusbh200's worst irq latency (affected
- * by the per-urb URB_NO_INTERRUPT hint, the log2_irq_thresh module parameter,
- * and other factors); or more than about 230 msec total (for portability,
- * given FUSBH200_TUNE_FLS and the slop).  Or, write a smarter scheduler!
- */
-
-#define SCHEDULE_SLOP	80	/* microframes */
-
-static int
-iso_stream_schedule (
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	struct fusbh200_iso_stream	*stream
-)
-{
-	u32			now, next, start, period, span;
-	int			status;
-	unsigned		mod = fusbh200->periodic_size << 3;
-	struct fusbh200_iso_sched	*sched = urb->hcpriv;
-
-	period = urb->interval;
-	span = sched->span;
-
-	if (span > mod - SCHEDULE_SLOP) {
-		fusbh200_dbg (fusbh200, "iso request %p too long\n", urb);
-		status = -EFBIG;
-		goto fail;
-	}
-
-	now = fusbh200_read_frame_index(fusbh200) & (mod - 1);
-
-	/* Typical case: reuse current schedule, stream is still active.
-	 * Hopefully there are no gaps from the host falling behind
-	 * (irq delays etc), but if there are we'll take the next
-	 * slot in the schedule, implicitly assuming URB_ISO_ASAP.
-	 */
-	if (likely (!list_empty (&stream->td_list))) {
-		u32	excess;
-
-		/* For high speed devices, allow scheduling within the
-		 * isochronous scheduling threshold.  For full speed devices
-		 * and Intel PCI-based controllers, don't (work around for
-		 * Intel ICH9 bug).
-		 */
-		if (!stream->highspeed && fusbh200->fs_i_thresh)
-			next = now + fusbh200->i_thresh;
-		else
-			next = now;
-
-		/* Fell behind (by up to twice the slop amount)?
-		 * We decide based on the time of the last currently-scheduled
-		 * slot, not the time of the next available slot.
-		 */
-		excess = (stream->next_uframe - period - next) & (mod - 1);
-		if (excess >= mod - 2 * SCHEDULE_SLOP)
-			start = next + excess - mod + period *
-					DIV_ROUND_UP(mod - excess, period);
-		else
-			start = next + excess + period;
-		if (start - now >= mod) {
-			fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n",
-					urb, start - now - period, period,
-					mod);
-			status = -EFBIG;
-			goto fail;
-		}
-	}
-
-	/* need to schedule; when's the next (u)frame we could start?
-	 * this is bigger than fusbh200->i_thresh allows; scheduling itself
-	 * isn't free, the slop should handle reasonably slow cpus.  it
-	 * can also help high bandwidth if the dma and irq loads don't
-	 * jump until after the queue is primed.
-	 */
-	else {
-		int done = 0;
-		start = SCHEDULE_SLOP + (now & ~0x07);
-
-		/* NOTE:  assumes URB_ISO_ASAP, to limit complexity/bugs */
-
-		/* find a uframe slot with enough bandwidth.
-		 * Early uframes are more precious because full-speed
-		 * iso IN transfers can't use late uframes,
-		 * and therefore they should be allocated last.
-		 */
-		next = start;
-		start += period;
-		do {
-			start--;
-			/* check schedule: enough space? */
-			if (itd_slot_ok(fusbh200, mod, start,
-					stream->usecs, period))
-				done = 1;
-		} while (start > next && !done);
-
-		/* no room in the schedule */
-		if (!done) {
-			fusbh200_dbg(fusbh200, "iso resched full %p (now %d max %d)\n",
-				urb, now, now + mod);
-			status = -ENOSPC;
-			goto fail;
-		}
-	}
-
-	/* Tried to schedule too far into the future? */
-	if (unlikely(start - now + span - period
-				>= mod - 2 * SCHEDULE_SLOP)) {
-		fusbh200_dbg(fusbh200, "request %p would overflow (%d+%d >= %d)\n",
-				urb, start - now, span - period,
-				mod - 2 * SCHEDULE_SLOP);
-		status = -EFBIG;
-		goto fail;
-	}
-
-	stream->next_uframe = start & (mod - 1);
-
-	/* report high speed start in uframes; full speed, in frames */
-	urb->start_frame = stream->next_uframe;
-	if (!stream->highspeed)
-		urb->start_frame >>= 3;
-
-	/* Make sure scan_isoc() sees these */
-	if (fusbh200->isoc_count == 0)
-		fusbh200->next_frame = now >> 3;
-	return 0;
-
- fail:
-	iso_sched_free(stream, sched);
-	urb->hcpriv = NULL;
-	return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline void
-itd_init(struct fusbh200_hcd *fusbh200, struct fusbh200_iso_stream *stream,
-		struct fusbh200_itd *itd)
-{
-	int i;
-
-	/* it's been recently zeroed */
-	itd->hw_next = FUSBH200_LIST_END(fusbh200);
-	itd->hw_bufp [0] = stream->buf0;
-	itd->hw_bufp [1] = stream->buf1;
-	itd->hw_bufp [2] = stream->buf2;
-
-	for (i = 0; i < 8; i++)
-		itd->index[i] = -1;
-
-	/* All other fields are filled when scheduling */
-}
-
-static inline void
-itd_patch(
-	struct fusbh200_hcd		*fusbh200,
-	struct fusbh200_itd		*itd,
-	struct fusbh200_iso_sched	*iso_sched,
-	unsigned		index,
-	u16			uframe
-)
-{
-	struct fusbh200_iso_packet	*uf = &iso_sched->packet [index];
-	unsigned		pg = itd->pg;
-
-	// BUG_ON (pg == 6 && uf->cross);
-
-	uframe &= 0x07;
-	itd->index [uframe] = index;
-
-	itd->hw_transaction[uframe] = uf->transaction;
-	itd->hw_transaction[uframe] |= cpu_to_hc32(fusbh200, pg << 12);
-	itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, uf->bufp & ~(u32)0);
-	itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(uf->bufp >> 32));
-
-	/* iso_frame_desc[].offset must be strictly increasing */
-	if (unlikely (uf->cross)) {
-		u64	bufp = uf->bufp + 4096;
-
-		itd->pg = ++pg;
-		itd->hw_bufp[pg] |= cpu_to_hc32(fusbh200, bufp & ~(u32)0);
-		itd->hw_bufp_hi[pg] |= cpu_to_hc32(fusbh200, (u32)(bufp >> 32));
-	}
-}
-
-static inline void
-itd_link (struct fusbh200_hcd *fusbh200, unsigned frame, struct fusbh200_itd *itd)
-{
-	union fusbh200_shadow	*prev = &fusbh200->pshadow[frame];
-	__hc32			*hw_p = &fusbh200->periodic[frame];
-	union fusbh200_shadow	here = *prev;
-	__hc32			type = 0;
-
-	/* skip any iso nodes which might belong to previous microframes */
-	while (here.ptr) {
-		type = Q_NEXT_TYPE(fusbh200, *hw_p);
-		if (type == cpu_to_hc32(fusbh200, Q_TYPE_QH))
-			break;
-		prev = periodic_next_shadow(fusbh200, prev, type);
-		hw_p = shadow_next_periodic(fusbh200, &here, type);
-		here = *prev;
-	}
-
-	itd->itd_next = here;
-	itd->hw_next = *hw_p;
-	prev->itd = itd;
-	itd->frame = frame;
-	wmb ();
-	*hw_p = cpu_to_hc32(fusbh200, itd->itd_dma | Q_TYPE_ITD);
-}
-
-/* fit urb's itds into the selected schedule slot; activate as needed */
-static void itd_link_urb(
-	struct fusbh200_hcd		*fusbh200,
-	struct urb		*urb,
-	unsigned		mod,
-	struct fusbh200_iso_stream	*stream
-)
-{
-	int			packet;
-	unsigned		next_uframe, uframe, frame;
-	struct fusbh200_iso_sched	*iso_sched = urb->hcpriv;
-	struct fusbh200_itd		*itd;
-
-	next_uframe = stream->next_uframe & (mod - 1);
-
-	if (unlikely (list_empty(&stream->td_list))) {
-		fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated
-				+= stream->bandwidth;
-		fusbh200_dbg(fusbh200,
-			"schedule devp %s ep%d%s-iso period %d start %d.%d\n",
-			urb->dev->devpath, stream->bEndpointAddress & 0x0f,
-			(stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out",
-			urb->interval,
-			next_uframe >> 3, next_uframe & 0x7);
-	}
-
-	/* fill iTDs uframe by uframe */
-	for (packet = 0, itd = NULL; packet < urb->number_of_packets; ) {
-		if (itd == NULL) {
-			/* ASSERT:  we have all necessary itds */
-			// BUG_ON (list_empty (&iso_sched->td_list));
-
-			/* ASSERT:  no itds for this endpoint in this uframe */
-
-			itd = list_entry (iso_sched->td_list.next,
-					struct fusbh200_itd, itd_list);
-			list_move_tail (&itd->itd_list, &stream->td_list);
-			itd->stream = stream;
-			itd->urb = urb;
-			itd_init (fusbh200, stream, itd);
-		}
-
-		uframe = next_uframe & 0x07;
-		frame = next_uframe >> 3;
-
-		itd_patch(fusbh200, itd, iso_sched, packet, uframe);
-
-		next_uframe += stream->interval;
-		next_uframe &= mod - 1;
-		packet++;
-
-		/* link completed itds into the schedule */
-		if (((next_uframe >> 3) != frame)
-				|| packet == urb->number_of_packets) {
-			itd_link(fusbh200, frame & (fusbh200->periodic_size - 1), itd);
-			itd = NULL;
-		}
-	}
-	stream->next_uframe = next_uframe;
-
-	/* don't need that schedule data any more */
-	iso_sched_free (stream, iso_sched);
-	urb->hcpriv = NULL;
-
-	++fusbh200->isoc_count;
-	enable_periodic(fusbh200);
-}
-
-#define	ISO_ERRS (FUSBH200_ISOC_BUF_ERR | FUSBH200_ISOC_BABBLE | FUSBH200_ISOC_XACTERR)
-
-/* Process and recycle a completed ITD.  Return true iff its urb completed,
- * and hence its completion callback probably added things to the hardware
- * schedule.
- *
- * Note that we carefully avoid recycling this descriptor until after any
- * completion callback runs, so that it won't be reused quickly.  That is,
- * assuming (a) no more than two urbs per frame on this endpoint, and also
- * (b) only this endpoint's completions submit URBs.  It seems some silicon
- * corrupts things if you reuse completed descriptors very quickly...
- */
-static bool itd_complete(struct fusbh200_hcd *fusbh200, struct fusbh200_itd *itd)
-{
-	struct urb				*urb = itd->urb;
-	struct usb_iso_packet_descriptor	*desc;
-	u32					t;
-	unsigned				uframe;
-	int					urb_index = -1;
-	struct fusbh200_iso_stream			*stream = itd->stream;
-	struct usb_device			*dev;
-	bool					retval = false;
-
-	/* for each uframe with a packet */
-	for (uframe = 0; uframe < 8; uframe++) {
-		if (likely (itd->index[uframe] == -1))
-			continue;
-		urb_index = itd->index[uframe];
-		desc = &urb->iso_frame_desc [urb_index];
-
-		t = hc32_to_cpup(fusbh200, &itd->hw_transaction [uframe]);
-		itd->hw_transaction [uframe] = 0;
-
-		/* report transfer status */
-		if (unlikely (t & ISO_ERRS)) {
-			urb->error_count++;
-			if (t & FUSBH200_ISOC_BUF_ERR)
-				desc->status = usb_pipein (urb->pipe)
-					? -ENOSR  /* hc couldn't read */
-					: -ECOMM; /* hc couldn't write */
-			else if (t & FUSBH200_ISOC_BABBLE)
-				desc->status = -EOVERFLOW;
-			else /* (t & FUSBH200_ISOC_XACTERR) */
-				desc->status = -EPROTO;
-
-			/* HC need not update length with this error */
-			if (!(t & FUSBH200_ISOC_BABBLE)) {
-				desc->actual_length = fusbh200_itdlen(urb, desc, t);
-				urb->actual_length += desc->actual_length;
-			}
-		} else if (likely ((t & FUSBH200_ISOC_ACTIVE) == 0)) {
-			desc->status = 0;
-			desc->actual_length = fusbh200_itdlen(urb, desc, t);
-			urb->actual_length += desc->actual_length;
-		} else {
-			/* URB was too late */
-			desc->status = -EXDEV;
-		}
-	}
-
-	/* handle completion now? */
-	if (likely ((urb_index + 1) != urb->number_of_packets))
-		goto done;
-
-	/* ASSERT: it's really the last itd for this urb
-	list_for_each_entry (itd, &stream->td_list, itd_list)
-		BUG_ON (itd->urb == urb);
-	 */
-
-	/* give urb back to the driver; completion often (re)submits */
-	dev = urb->dev;
-	fusbh200_urb_done(fusbh200, urb, 0);
-	retval = true;
-	urb = NULL;
-
-	--fusbh200->isoc_count;
-	disable_periodic(fusbh200);
-
-	if (unlikely(list_is_singular(&stream->td_list))) {
-		fusbh200_to_hcd(fusbh200)->self.bandwidth_allocated
-				-= stream->bandwidth;
-		fusbh200_dbg(fusbh200,
-			"deschedule devp %s ep%d%s-iso\n",
-			dev->devpath, stream->bEndpointAddress & 0x0f,
-			(stream->bEndpointAddress & USB_DIR_IN) ? "in" : "out");
-	}
-
-done:
-	itd->urb = NULL;
-
-	/* Add to the end of the free list for later reuse */
-	list_move_tail(&itd->itd_list, &stream->free_list);
-
-	/* Recycle the iTDs when the pipeline is empty (ep no longer in use) */
-	if (list_empty(&stream->td_list)) {
-		list_splice_tail_init(&stream->free_list,
-				&fusbh200->cached_itd_list);
-		start_free_itds(fusbh200);
-	}
-
-	return retval;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static int itd_submit (struct fusbh200_hcd *fusbh200, struct urb *urb,
-	gfp_t mem_flags)
-{
-	int			status = -EINVAL;
-	unsigned long		flags;
-	struct fusbh200_iso_stream	*stream;
-
-	/* Get iso_stream head */
-	stream = iso_stream_find (fusbh200, urb);
-	if (unlikely (stream == NULL)) {
-		fusbh200_dbg (fusbh200, "can't get iso stream\n");
-		return -ENOMEM;
-	}
-	if (unlikely (urb->interval != stream->interval &&
-		      fusbh200_port_speed(fusbh200, 0) == USB_PORT_STAT_HIGH_SPEED)) {
-			fusbh200_dbg (fusbh200, "can't change iso interval %d --> %d\n",
-				stream->interval, urb->interval);
-			goto done;
-	}
-
-#ifdef FUSBH200_URB_TRACE
-	fusbh200_dbg (fusbh200,
-		"%s %s urb %p ep%d%s len %d, %d pkts %d uframes [%p]\n",
-		__func__, urb->dev->devpath, urb,
-		usb_pipeendpoint (urb->pipe),
-		usb_pipein (urb->pipe) ? "in" : "out",
-		urb->transfer_buffer_length,
-		urb->number_of_packets, urb->interval,
-		stream);
-#endif
-
-	/* allocate ITDs w/o locking anything */
-	status = itd_urb_transaction (stream, fusbh200, urb, mem_flags);
-	if (unlikely (status < 0)) {
-		fusbh200_dbg (fusbh200, "can't init itds\n");
-		goto done;
-	}
-
-	/* schedule ... need to lock */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	if (unlikely(!HCD_HW_ACCESSIBLE(fusbh200_to_hcd(fusbh200)))) {
-		status = -ESHUTDOWN;
-		goto done_not_linked;
-	}
-	status = usb_hcd_link_urb_to_ep(fusbh200_to_hcd(fusbh200), urb);
-	if (unlikely(status))
-		goto done_not_linked;
-	status = iso_stream_schedule(fusbh200, urb, stream);
-	if (likely (status == 0))
-		itd_link_urb (fusbh200, urb, fusbh200->periodic_size << 3, stream);
-	else
-		usb_hcd_unlink_urb_from_ep(fusbh200_to_hcd(fusbh200), urb);
- done_not_linked:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
- done:
-	return status;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static void scan_isoc(struct fusbh200_hcd *fusbh200)
-{
-	unsigned	uf, now_frame, frame;
-	unsigned	fmask = fusbh200->periodic_size - 1;
-	bool		modified, live;
-
-	/*
-	 * When running, scan from last scan point up to "now"
-	 * else clean up by scanning everything that's left.
-	 * Touches as few pages as possible:  cache-friendly.
-	 */
-	if (fusbh200->rh_state >= FUSBH200_RH_RUNNING) {
-		uf = fusbh200_read_frame_index(fusbh200);
-		now_frame = (uf >> 3) & fmask;
-		live = true;
-	} else  {
-		now_frame = (fusbh200->next_frame - 1) & fmask;
-		live = false;
-	}
-	fusbh200->now_frame = now_frame;
-
-	frame = fusbh200->next_frame;
-	for (;;) {
-		union fusbh200_shadow	q, *q_p;
-		__hc32			type, *hw_p;
-
-restart:
-		/* scan each element in frame's queue for completions */
-		q_p = &fusbh200->pshadow [frame];
-		hw_p = &fusbh200->periodic [frame];
-		q.ptr = q_p->ptr;
-		type = Q_NEXT_TYPE(fusbh200, *hw_p);
-		modified = false;
-
-		while (q.ptr != NULL) {
-			switch (hc32_to_cpu(fusbh200, type)) {
-			case Q_TYPE_ITD:
-				/* If this ITD is still active, leave it for
-				 * later processing ... check the next entry.
-				 * No need to check for activity unless the
-				 * frame is current.
-				 */
-				if (frame == now_frame && live) {
-					rmb();
-					for (uf = 0; uf < 8; uf++) {
-						if (q.itd->hw_transaction[uf] &
-							    ITD_ACTIVE(fusbh200))
-							break;
-					}
-					if (uf < 8) {
-						q_p = &q.itd->itd_next;
-						hw_p = &q.itd->hw_next;
-						type = Q_NEXT_TYPE(fusbh200,
-							q.itd->hw_next);
-						q = *q_p;
-						break;
-					}
-				}
-
-				/* Take finished ITDs out of the schedule
-				 * and process them:  recycle, maybe report
-				 * URB completion.  HC won't cache the
-				 * pointer for much longer, if at all.
-				 */
-				*q_p = q.itd->itd_next;
-				*hw_p = q.itd->hw_next;
-				type = Q_NEXT_TYPE(fusbh200, q.itd->hw_next);
-				wmb();
-				modified = itd_complete (fusbh200, q.itd);
-				q = *q_p;
-				break;
-			default:
-				fusbh200_dbg(fusbh200, "corrupt type %d frame %d shadow %p\n",
-					type, frame, q.ptr);
-				// BUG ();
-				/* FALL THROUGH */
-			case Q_TYPE_QH:
-			case Q_TYPE_FSTN:
-				/* End of the iTDs and siTDs */
-				q.ptr = NULL;
-				break;
-			}
-
-			/* assume completion callbacks modify the queue */
-			if (unlikely(modified && fusbh200->isoc_count > 0))
-				goto restart;
-		}
-
-		/* Stop when we have reached the current frame */
-		if (frame == now_frame)
-			break;
-		frame = (frame + 1) & fmask;
-	}
-	fusbh200->next_frame = now_frame;
-}
-/*-------------------------------------------------------------------------*/
-/*
- * Display / Set uframe_periodic_max
- */
-static ssize_t show_uframe_periodic_max(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
-{
-	struct fusbh200_hcd		*fusbh200;
-	int			n;
-
-	fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev)));
-	n = scnprintf(buf, PAGE_SIZE, "%d\n", fusbh200->uframe_periodic_max);
-	return n;
-}
-
-
-static ssize_t store_uframe_periodic_max(struct device *dev,
-					struct device_attribute *attr,
-					const char *buf, size_t count)
-{
-	struct fusbh200_hcd		*fusbh200;
-	unsigned		uframe_periodic_max;
-	unsigned		frame, uframe;
-	unsigned short		allocated_max;
-	unsigned long		flags;
-	ssize_t			ret;
-
-	fusbh200 = hcd_to_fusbh200(bus_to_hcd(dev_get_drvdata(dev)));
-	if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
-		return -EINVAL;
-
-	if (uframe_periodic_max < 100 || uframe_periodic_max >= 125) {
-		fusbh200_info(fusbh200, "rejecting invalid request for "
-				"uframe_periodic_max=%u\n", uframe_periodic_max);
-		return -EINVAL;
-	}
-
-	ret = -EINVAL;
-
-	/*
-	 * lock, so that our checking does not race with possible periodic
-	 * bandwidth allocation through submitting new urbs.
-	 */
-	spin_lock_irqsave (&fusbh200->lock, flags);
-
-	/*
-	 * for request to decrease max periodic bandwidth, we have to check
-	 * every microframe in the schedule to see whether the decrease is
-	 * possible.
-	 */
-	if (uframe_periodic_max < fusbh200->uframe_periodic_max) {
-		allocated_max = 0;
-
-		for (frame = 0; frame < fusbh200->periodic_size; ++frame)
-			for (uframe = 0; uframe < 7; ++uframe)
-				allocated_max = max(allocated_max,
-						    periodic_usecs (fusbh200, frame, uframe));
-
-		if (allocated_max > uframe_periodic_max) {
-			fusbh200_info(fusbh200,
-				"cannot decrease uframe_periodic_max because "
-				"periodic bandwidth is already allocated "
-				"(%u > %u)\n",
-				allocated_max, uframe_periodic_max);
-			goto out_unlock;
-		}
-	}
-
-	/* increasing is always ok */
-
-	fusbh200_info(fusbh200, "setting max periodic bandwidth to %u%% "
-			"(== %u usec/uframe)\n",
-			100*uframe_periodic_max/125, uframe_periodic_max);
-
-	if (uframe_periodic_max != 100)
-		fusbh200_warn(fusbh200, "max periodic bandwidth set is non-standard\n");
-
-	fusbh200->uframe_periodic_max = uframe_periodic_max;
-	ret = count;
-
-out_unlock:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return ret;
-}
-static DEVICE_ATTR(uframe_periodic_max, 0644, show_uframe_periodic_max, store_uframe_periodic_max);
-
-
-static inline int create_sysfs_files(struct fusbh200_hcd *fusbh200)
-{
-	struct device	*controller = fusbh200_to_hcd(fusbh200)->self.controller;
-	int	i = 0;
-
-	if (i)
-		goto out;
-
-	i = device_create_file(controller, &dev_attr_uframe_periodic_max);
-out:
-	return i;
-}
-
-static inline void remove_sysfs_files(struct fusbh200_hcd *fusbh200)
-{
-	struct device	*controller = fusbh200_to_hcd(fusbh200)->self.controller;
-
-	device_remove_file(controller, &dev_attr_uframe_periodic_max);
-}
-/*-------------------------------------------------------------------------*/
-
-/* On some systems, leaving remote wakeup enabled prevents system shutdown.
- * The firmware seems to think that powering off is a wakeup event!
- * This routine turns off remote wakeup and everything else, on all ports.
- */
-static void fusbh200_turn_off_all_ports(struct fusbh200_hcd *fusbh200)
-{
-	u32 __iomem *status_reg = &fusbh200->regs->port_status;
-
-	fusbh200_writel(fusbh200, PORT_RWC_BITS, status_reg);
-}
-
-/*
- * Halt HC, turn off all ports, and let the BIOS use the companion controllers.
- * Must be called with interrupts enabled and the lock not held.
- */
-static void fusbh200_silence_controller(struct fusbh200_hcd *fusbh200)
-{
-	fusbh200_halt(fusbh200);
-
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->rh_state = FUSBH200_RH_HALTED;
-	fusbh200_turn_off_all_ports(fusbh200);
-	spin_unlock_irq(&fusbh200->lock);
-}
-
-/* fusbh200_shutdown kick in for silicon on any bus (not just pci, etc).
- * This forcibly disables dma and IRQs, helping kexec and other cases
- * where the next system software may expect clean state.
- */
-static void fusbh200_shutdown(struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd	*fusbh200 = hcd_to_fusbh200(hcd);
-
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->shutdown = true;
-	fusbh200->rh_state = FUSBH200_RH_STOPPING;
-	fusbh200->enabled_hrtimer_events = 0;
-	spin_unlock_irq(&fusbh200->lock);
-
-	fusbh200_silence_controller(fusbh200);
-
-	hrtimer_cancel(&fusbh200->hrtimer);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * fusbh200_work is called from some interrupts, timers, and so on.
- * it calls driver completion functions, after dropping fusbh200->lock.
- */
-static void fusbh200_work (struct fusbh200_hcd *fusbh200)
-{
-	/* another CPU may drop fusbh200->lock during a schedule scan while
-	 * it reports urb completions.  this flag guards against bogus
-	 * attempts at re-entrant schedule scanning.
-	 */
-	if (fusbh200->scanning) {
-		fusbh200->need_rescan = true;
-		return;
-	}
-	fusbh200->scanning = true;
-
- rescan:
-	fusbh200->need_rescan = false;
-	if (fusbh200->async_count)
-		scan_async(fusbh200);
-	if (fusbh200->intr_count > 0)
-		scan_intr(fusbh200);
-	if (fusbh200->isoc_count > 0)
-		scan_isoc(fusbh200);
-	if (fusbh200->need_rescan)
-		goto rescan;
-	fusbh200->scanning = false;
-
-	/* the IO watchdog guards against hardware or driver bugs that
-	 * misplace IRQs, and should let us run completely without IRQs.
-	 * such lossage has been observed on both VT6202 and VT8235.
-	 */
-	turn_on_io_watchdog(fusbh200);
-}
-
-/*
- * Called when the fusbh200_hcd module is removed.
- */
-static void fusbh200_stop (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-
-	fusbh200_dbg (fusbh200, "stop\n");
-
-	/* no more interrupts ... */
-
-	spin_lock_irq(&fusbh200->lock);
-	fusbh200->enabled_hrtimer_events = 0;
-	spin_unlock_irq(&fusbh200->lock);
-
-	fusbh200_quiesce(fusbh200);
-	fusbh200_silence_controller(fusbh200);
-	fusbh200_reset (fusbh200);
-
-	hrtimer_cancel(&fusbh200->hrtimer);
-	remove_sysfs_files(fusbh200);
-	remove_debug_files (fusbh200);
-
-	/* root hub is shut down separately (first, when possible) */
-	spin_lock_irq (&fusbh200->lock);
-	end_free_itds(fusbh200);
-	spin_unlock_irq (&fusbh200->lock);
-	fusbh200_mem_cleanup (fusbh200);
-
-	fusbh200_dbg(fusbh200, "irq normal %ld err %ld iaa %ld (lost %ld)\n",
-		fusbh200->stats.normal, fusbh200->stats.error, fusbh200->stats.iaa,
-		fusbh200->stats.lost_iaa);
-	fusbh200_dbg (fusbh200, "complete %ld unlink %ld\n",
-		fusbh200->stats.complete, fusbh200->stats.unlink);
-
-	dbg_status (fusbh200, "fusbh200_stop completed",
-		    fusbh200_readl(fusbh200, &fusbh200->regs->status));
-}
-
-/* one-time init, only for memory state */
-static int hcd_fusbh200_init(struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200(hcd);
-	u32			temp;
-	int			retval;
-	u32			hcc_params;
-	struct fusbh200_qh_hw	*hw;
-
-	spin_lock_init(&fusbh200->lock);
-
-	/*
-	 * keep io watchdog by default, those good HCDs could turn off it later
-	 */
-	fusbh200->need_io_watchdog = 1;
-
-	hrtimer_init(&fusbh200->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
-	fusbh200->hrtimer.function = fusbh200_hrtimer_func;
-	fusbh200->next_hrtimer_event = FUSBH200_HRTIMER_NO_EVENT;
-
-	hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
-	/*
-	 * by default set standard 80% (== 100 usec/uframe) max periodic
-	 * bandwidth as required by USB 2.0
-	 */
-	fusbh200->uframe_periodic_max = 100;
-
-	/*
-	 * hw default: 1K periodic list heads, one per frame.
-	 * periodic_size can shrink by USBCMD update if hcc_params allows.
-	 */
-	fusbh200->periodic_size = DEFAULT_I_TDPS;
-	INIT_LIST_HEAD(&fusbh200->intr_qh_list);
-	INIT_LIST_HEAD(&fusbh200->cached_itd_list);
-
-	if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
-		/* periodic schedule size can be smaller than default */
-		switch (FUSBH200_TUNE_FLS) {
-		case 0: fusbh200->periodic_size = 1024; break;
-		case 1: fusbh200->periodic_size = 512; break;
-		case 2: fusbh200->periodic_size = 256; break;
-		default:	BUG();
-		}
-	}
-	if ((retval = fusbh200_mem_init(fusbh200, GFP_KERNEL)) < 0)
-		return retval;
-
-	/* controllers may cache some of the periodic schedule ... */
-	fusbh200->i_thresh = 2;
-
-	/*
-	 * dedicate a qh for the async ring head, since we couldn't unlink
-	 * a 'real' qh without stopping the async schedule [4.8].  use it
-	 * as the 'reclamation list head' too.
-	 * its dummy is used in hw_alt_next of many tds, to prevent the qh
-	 * from automatically advancing to the next td after short reads.
-	 */
-	fusbh200->async->qh_next.qh = NULL;
-	hw = fusbh200->async->hw;
-	hw->hw_next = QH_NEXT(fusbh200, fusbh200->async->qh_dma);
-	hw->hw_info1 = cpu_to_hc32(fusbh200, QH_HEAD);
-	hw->hw_token = cpu_to_hc32(fusbh200, QTD_STS_HALT);
-	hw->hw_qtd_next = FUSBH200_LIST_END(fusbh200);
-	fusbh200->async->qh_state = QH_STATE_LINKED;
-	hw->hw_alt_next = QTD_NEXT(fusbh200, fusbh200->async->dummy->qtd_dma);
-
-	/* clear interrupt enables, set irq latency */
-	if (log2_irq_thresh < 0 || log2_irq_thresh > 6)
-		log2_irq_thresh = 0;
-	temp = 1 << (16 + log2_irq_thresh);
-	if (HCC_CANPARK(hcc_params)) {
-		/* HW default park == 3, on hardware that supports it (like
-		 * NVidia and ALI silicon), maximizes throughput on the async
-		 * schedule by avoiding QH fetches between transfers.
-		 *
-		 * With fast usb storage devices and NForce2, "park" seems to
-		 * make problems:  throughput reduction (!), data errors...
-		 */
-		if (park) {
-			park = min(park, (unsigned) 3);
-			temp |= CMD_PARK;
-			temp |= park << 8;
-		}
-		fusbh200_dbg(fusbh200, "park %d\n", park);
-	}
-	if (HCC_PGM_FRAMELISTLEN(hcc_params)) {
-		/* periodic schedule size can be smaller than default */
-		temp &= ~(3 << 2);
-		temp |= (FUSBH200_TUNE_FLS << 2);
-	}
-	fusbh200->command = temp;
-
-	/* Accept arbitrarily long scatter-gather lists */
-	if (!(hcd->driver->flags & HCD_LOCAL_MEM))
-		hcd->self.sg_tablesize = ~0;
-	return 0;
-}
-
-/* start HC running; it's halted, hcd_fusbh200_init() has been run (once) */
-static int fusbh200_run (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	u32			temp;
-	u32			hcc_params;
-
-	hcd->uses_new_polling = 1;
-
-	/* EHCI spec section 4.1 */
-
-	fusbh200_writel(fusbh200, fusbh200->periodic_dma, &fusbh200->regs->frame_list);
-	fusbh200_writel(fusbh200, (u32)fusbh200->async->qh_dma, &fusbh200->regs->async_next);
-
-	/*
-	 * hcc_params controls whether fusbh200->regs->segment must (!!!)
-	 * be used; it constrains QH/ITD/SITD and QTD locations.
-	 * pci_pool consistent memory always uses segment zero.
-	 * streaming mappings for I/O buffers, like pci_map_single(),
-	 * can return segments above 4GB, if the device allows.
-	 *
-	 * NOTE:  the dma mask is visible through dma_supported(), so
-	 * drivers can pass this info along ... like NETIF_F_HIGHDMA,
-	 * Scsi_Host.highmem_io, and so forth.  It's readonly to all
-	 * host side drivers though.
-	 */
-	hcc_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcc_params);
-
-	// Philips, Intel, and maybe others need CMD_RUN before the
-	// root hub will detect new devices (why?); NEC doesn't
-	fusbh200->command &= ~(CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET);
-	fusbh200->command |= CMD_RUN;
-	fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-	dbg_cmd (fusbh200, "init", fusbh200->command);
-
-	/*
-	 * Start, enabling full USB 2.0 functionality ... usb 1.1 devices
-	 * are explicitly handed to companion controller(s), so no TT is
-	 * involved with the root hub.  (Except where one is integrated,
-	 * and there's no companion controller unless maybe for USB OTG.)
-	 *
-	 * Turning on the CF flag will transfer ownership of all ports
-	 * from the companions to the EHCI controller.  If any of the
-	 * companions are in the middle of a port reset at the time, it
-	 * could cause trouble.  Write-locking ehci_cf_port_reset_rwsem
-	 * guarantees that no resets are in progress.  After we set CF,
-	 * a short delay lets the hardware catch up; new resets shouldn't
-	 * be started before the port switching actions could complete.
-	 */
-	down_write(&ehci_cf_port_reset_rwsem);
-	fusbh200->rh_state = FUSBH200_RH_RUNNING;
-	fusbh200_readl(fusbh200, &fusbh200->regs->command);	/* unblock posted writes */
-	msleep(5);
-	up_write(&ehci_cf_port_reset_rwsem);
-	fusbh200->last_periodic_enable = ktime_get_real();
-
-	temp = HC_VERSION(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
-	fusbh200_info (fusbh200,
-		"USB %x.%x started, EHCI %x.%02x\n",
-		((fusbh200->sbrn & 0xf0)>>4), (fusbh200->sbrn & 0x0f),
-		temp >> 8, temp & 0xff);
-
-	fusbh200_writel(fusbh200, INTR_MASK,
-		    &fusbh200->regs->intr_enable); /* Turn On Interrupts */
-
-	/* GRR this is run-once init(), being done every time the HC starts.
-	 * So long as they're part of class devices, we can't do it init()
-	 * since the class device isn't created that early.
-	 */
-	create_debug_files(fusbh200);
-	create_sysfs_files(fusbh200);
-
-	return 0;
-}
-
-static int fusbh200_setup(struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd *fusbh200 = hcd_to_fusbh200(hcd);
-	int retval;
-
-	fusbh200->regs = (void __iomem *)fusbh200->caps +
-	    HC_LENGTH(fusbh200, fusbh200_readl(fusbh200, &fusbh200->caps->hc_capbase));
-	dbg_hcs_params(fusbh200, "reset");
-	dbg_hcc_params(fusbh200, "reset");
-
-	/* cache this readonly data; minimize chip reads */
-	fusbh200->hcs_params = fusbh200_readl(fusbh200, &fusbh200->caps->hcs_params);
-
-	fusbh200->sbrn = HCD_USB2;
-
-	/* data structure init */
-	retval = hcd_fusbh200_init(hcd);
-	if (retval)
-		return retval;
-
-	retval = fusbh200_halt(fusbh200);
-	if (retval)
-		return retval;
-
-	fusbh200_reset(fusbh200);
-
-	return 0;
-}
-
-/*-------------------------------------------------------------------------*/
-
-static irqreturn_t fusbh200_irq (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	u32			status, masked_status, pcd_status = 0, cmd;
-	int			bh;
-
-	spin_lock (&fusbh200->lock);
-
-	status = fusbh200_readl(fusbh200, &fusbh200->regs->status);
-
-	/* e.g. cardbus physical eject */
-	if (status == ~(u32) 0) {
-		fusbh200_dbg (fusbh200, "device removed\n");
-		goto dead;
-	}
-
-	/*
-	 * We don't use STS_FLR, but some controllers don't like it to
-	 * remain on, so mask it out along with the other status bits.
-	 */
-	masked_status = status & (INTR_MASK | STS_FLR);
-
-	/* Shared IRQ? */
-	if (!masked_status || unlikely(fusbh200->rh_state == FUSBH200_RH_HALTED)) {
-		spin_unlock(&fusbh200->lock);
-		return IRQ_NONE;
-	}
-
-	/* clear (just) interrupts */
-	fusbh200_writel(fusbh200, masked_status, &fusbh200->regs->status);
-	cmd = fusbh200_readl(fusbh200, &fusbh200->regs->command);
-	bh = 0;
-
-	/* normal [4.15.1.2] or error [4.15.1.1] completion */
-	if (likely ((status & (STS_INT|STS_ERR)) != 0)) {
-		if (likely ((status & STS_ERR) == 0))
-			COUNT (fusbh200->stats.normal);
-		else
-			COUNT (fusbh200->stats.error);
-		bh = 1;
-	}
-
-	/* complete the unlinking of some qh [4.15.2.3] */
-	if (status & STS_IAA) {
-
-		/* Turn off the IAA watchdog */
-		fusbh200->enabled_hrtimer_events &= ~BIT(FUSBH200_HRTIMER_IAA_WATCHDOG);
-
-		/*
-		 * Mild optimization: Allow another IAAD to reset the
-		 * hrtimer, if one occurs before the next expiration.
-		 * In theory we could always cancel the hrtimer, but
-		 * tests show that about half the time it will be reset
-		 * for some other event anyway.
-		 */
-		if (fusbh200->next_hrtimer_event == FUSBH200_HRTIMER_IAA_WATCHDOG)
-			++fusbh200->next_hrtimer_event;
-
-		/* guard against (alleged) silicon errata */
-		if (cmd & CMD_IAAD)
-			fusbh200_dbg(fusbh200, "IAA with IAAD still set?\n");
-		if (fusbh200->async_iaa) {
-			COUNT(fusbh200->stats.iaa);
-			end_unlink_async(fusbh200);
-		} else
-			fusbh200_dbg(fusbh200, "IAA with nothing unlinked?\n");
-	}
-
-	/* remote wakeup [4.3.1] */
-	if (status & STS_PCD) {
-		int pstatus;
-		u32 __iomem *status_reg = &fusbh200->regs->port_status;
-
-		/* kick root hub later */
-		pcd_status = status;
-
-		/* resume root hub? */
-		if (fusbh200->rh_state == FUSBH200_RH_SUSPENDED)
-			usb_hcd_resume_root_hub(hcd);
-
-		pstatus = fusbh200_readl(fusbh200, status_reg);
-
-		if (test_bit(0, &fusbh200->suspended_ports) &&
-				((pstatus & PORT_RESUME) ||
-					!(pstatus & PORT_SUSPEND)) &&
-				(pstatus & PORT_PE) &&
-				fusbh200->reset_done[0] == 0) {
-
-			/* start 20 msec resume signaling from this port,
-			 * and make hub_wq collect PORT_STAT_C_SUSPEND to
-			 * stop that signaling.  Use 5 ms extra for safety,
-			 * like usb_port_resume() does.
-			 */
-			fusbh200->reset_done[0] = jiffies + msecs_to_jiffies(25);
-			set_bit(0, &fusbh200->resuming_ports);
-			fusbh200_dbg (fusbh200, "port 1 remote wakeup\n");
-			mod_timer(&hcd->rh_timer, fusbh200->reset_done[0]);
-		}
-	}
-
-	/* PCI errors [4.15.2.4] */
-	if (unlikely ((status & STS_FATAL) != 0)) {
-		fusbh200_err(fusbh200, "fatal error\n");
-		dbg_cmd(fusbh200, "fatal", cmd);
-		dbg_status(fusbh200, "fatal", status);
-dead:
-		usb_hc_died(hcd);
-
-		/* Don't let the controller do anything more */
-		fusbh200->shutdown = true;
-		fusbh200->rh_state = FUSBH200_RH_STOPPING;
-		fusbh200->command &= ~(CMD_RUN | CMD_ASE | CMD_PSE);
-		fusbh200_writel(fusbh200, fusbh200->command, &fusbh200->regs->command);
-		fusbh200_writel(fusbh200, 0, &fusbh200->regs->intr_enable);
-		fusbh200_handle_controller_death(fusbh200);
-
-		/* Handle completions when the controller stops */
-		bh = 0;
-	}
-
-	if (bh)
-		fusbh200_work (fusbh200);
-	spin_unlock (&fusbh200->lock);
-	if (pcd_status)
-		usb_hcd_poll_rh_status(hcd);
-	return IRQ_HANDLED;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * non-error returns are a promise to giveback() the urb later
- * we drop ownership so next owner (or urb unlink) can get it
- *
- * urb + dev is in hcd.self.controller.urb_list
- * we're queueing TDs onto software and hardware lists
- *
- * hcd-specific init for hcpriv hasn't been done yet
- *
- * NOTE:  control, bulk, and interrupt share the same code to append TDs
- * to a (possibly active) QH, and the same QH scanning code.
- */
-static int fusbh200_urb_enqueue (
-	struct usb_hcd	*hcd,
-	struct urb	*urb,
-	gfp_t		mem_flags
-) {
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	struct list_head	qtd_list;
-
-	INIT_LIST_HEAD (&qtd_list);
-
-	switch (usb_pipetype (urb->pipe)) {
-	case PIPE_CONTROL:
-		/* qh_completions() code doesn't handle all the fault cases
-		 * in multi-TD control transfers.  Even 1KB is rare anyway.
-		 */
-		if (urb->transfer_buffer_length > (16 * 1024))
-			return -EMSGSIZE;
-		/* FALLTHROUGH */
-	/* case PIPE_BULK: */
-	default:
-		if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags))
-			return -ENOMEM;
-		return submit_async(fusbh200, urb, &qtd_list, mem_flags);
-
-	case PIPE_INTERRUPT:
-		if (!qh_urb_transaction (fusbh200, urb, &qtd_list, mem_flags))
-			return -ENOMEM;
-		return intr_submit(fusbh200, urb, &qtd_list, mem_flags);
-
-	case PIPE_ISOCHRONOUS:
-		return itd_submit (fusbh200, urb, mem_flags);
-	}
-}
-
-/* remove from hardware lists
- * completions normally happen asynchronously
- */
-
-static int fusbh200_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	struct fusbh200_qh		*qh;
-	unsigned long		flags;
-	int			rc;
-
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	rc = usb_hcd_check_unlink_urb(hcd, urb, status);
-	if (rc)
-		goto done;
-
-	switch (usb_pipetype (urb->pipe)) {
-	// case PIPE_CONTROL:
-	// case PIPE_BULK:
-	default:
-		qh = (struct fusbh200_qh *) urb->hcpriv;
-		if (!qh)
-			break;
-		switch (qh->qh_state) {
-		case QH_STATE_LINKED:
-		case QH_STATE_COMPLETING:
-			start_unlink_async(fusbh200, qh);
-			break;
-		case QH_STATE_UNLINK:
-		case QH_STATE_UNLINK_WAIT:
-			/* already started */
-			break;
-		case QH_STATE_IDLE:
-			/* QH might be waiting for a Clear-TT-Buffer */
-			qh_completions(fusbh200, qh);
-			break;
-		}
-		break;
-
-	case PIPE_INTERRUPT:
-		qh = (struct fusbh200_qh *) urb->hcpriv;
-		if (!qh)
-			break;
-		switch (qh->qh_state) {
-		case QH_STATE_LINKED:
-		case QH_STATE_COMPLETING:
-			start_unlink_intr(fusbh200, qh);
-			break;
-		case QH_STATE_IDLE:
-			qh_completions (fusbh200, qh);
-			break;
-		default:
-			fusbh200_dbg (fusbh200, "bogus qh %p state %d\n",
-					qh, qh->qh_state);
-			goto done;
-		}
-		break;
-
-	case PIPE_ISOCHRONOUS:
-		// itd...
-
-		// wait till next completion, do it then.
-		// completion irqs can wait up to 1024 msec,
-		break;
-	}
-done:
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-	return rc;
-}
-
-/*-------------------------------------------------------------------------*/
-
-// bulk qh holds the data toggle
-
-static void
-fusbh200_endpoint_disable (struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	unsigned long		flags;
-	struct fusbh200_qh		*qh, *tmp;
-
-	/* ASSERT:  any requests/urbs are being unlinked */
-	/* ASSERT:  nobody can be submitting urbs for this any more */
-
-rescan:
-	spin_lock_irqsave (&fusbh200->lock, flags);
-	qh = ep->hcpriv;
-	if (!qh)
-		goto done;
-
-	/* endpoints can be iso streams.  for now, we don't
-	 * accelerate iso completions ... so spin a while.
-	 */
-	if (qh->hw == NULL) {
-		struct fusbh200_iso_stream	*stream = ep->hcpriv;
-
-		if (!list_empty(&stream->td_list))
-			goto idle_timeout;
-
-		/* BUG_ON(!list_empty(&stream->free_list)); */
-		kfree(stream);
-		goto done;
-	}
-
-	if (fusbh200->rh_state < FUSBH200_RH_RUNNING)
-		qh->qh_state = QH_STATE_IDLE;
-	switch (qh->qh_state) {
-	case QH_STATE_LINKED:
-	case QH_STATE_COMPLETING:
-		for (tmp = fusbh200->async->qh_next.qh;
-				tmp && tmp != qh;
-				tmp = tmp->qh_next.qh)
-			continue;
-		/* periodic qh self-unlinks on empty, and a COMPLETING qh
-		 * may already be unlinked.
-		 */
-		if (tmp)
-			start_unlink_async(fusbh200, qh);
-		/* FALL THROUGH */
-	case QH_STATE_UNLINK:		/* wait for hw to finish? */
-	case QH_STATE_UNLINK_WAIT:
-idle_timeout:
-		spin_unlock_irqrestore (&fusbh200->lock, flags);
-		schedule_timeout_uninterruptible(1);
-		goto rescan;
-	case QH_STATE_IDLE:		/* fully unlinked */
-		if (qh->clearing_tt)
-			goto idle_timeout;
-		if (list_empty (&qh->qtd_list)) {
-			qh_destroy(fusbh200, qh);
-			break;
-		}
-		/* else FALL THROUGH */
-	default:
-		/* caller was supposed to have unlinked any requests;
-		 * that's not our job.  just leak this memory.
-		 */
-		fusbh200_err (fusbh200, "qh %p (#%02x) state %d%s\n",
-			qh, ep->desc.bEndpointAddress, qh->qh_state,
-			list_empty (&qh->qtd_list) ? "" : "(has tds)");
-		break;
-	}
- done:
-	ep->hcpriv = NULL;
-	spin_unlock_irqrestore (&fusbh200->lock, flags);
-}
-
-static void
-fusbh200_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200(hcd);
-	struct fusbh200_qh		*qh;
-	int			eptype = usb_endpoint_type(&ep->desc);
-	int			epnum = usb_endpoint_num(&ep->desc);
-	int			is_out = usb_endpoint_dir_out(&ep->desc);
-	unsigned long		flags;
-
-	if (eptype != USB_ENDPOINT_XFER_BULK && eptype != USB_ENDPOINT_XFER_INT)
-		return;
-
-	spin_lock_irqsave(&fusbh200->lock, flags);
-	qh = ep->hcpriv;
-
-	/* For Bulk and Interrupt endpoints we maintain the toggle state
-	 * in the hardware; the toggle bits in udev aren't used at all.
-	 * When an endpoint is reset by usb_clear_halt() we must reset
-	 * the toggle bit in the QH.
-	 */
-	if (qh) {
-		usb_settoggle(qh->dev, epnum, is_out, 0);
-		if (!list_empty(&qh->qtd_list)) {
-			WARN_ONCE(1, "clear_halt for a busy endpoint\n");
-		} else if (qh->qh_state == QH_STATE_LINKED ||
-				qh->qh_state == QH_STATE_COMPLETING) {
-
-			/* The toggle value in the QH can't be updated
-			 * while the QH is active.  Unlink it now;
-			 * re-linking will call qh_refresh().
-			 */
-			if (eptype == USB_ENDPOINT_XFER_BULK)
-				start_unlink_async(fusbh200, qh);
-			else
-				start_unlink_intr(fusbh200, qh);
-		}
-	}
-	spin_unlock_irqrestore(&fusbh200->lock, flags);
-}
-
-static int fusbh200_get_frame (struct usb_hcd *hcd)
-{
-	struct fusbh200_hcd		*fusbh200 = hcd_to_fusbh200 (hcd);
-	return (fusbh200_read_frame_index(fusbh200) >> 3) % fusbh200->periodic_size;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * The EHCI in ChipIdea HDRC cannot be a separate module or device,
- * because its registers (and irq) are shared between host/gadget/otg
- * functions  and in order to facilitate role switching we cannot
- * give the fusbh200 driver exclusive access to those.
- */
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR (DRIVER_AUTHOR);
-MODULE_LICENSE ("GPL");
-
-static const struct hc_driver fusbh200_fusbh200_hc_driver = {
-	.description 		= hcd_name,
-	.product_desc 		= "Faraday USB2.0 Host Controller",
-	.hcd_priv_size 		= sizeof(struct fusbh200_hcd),
-
-	/*
-	 * generic hardware linkage
-	 */
-	.irq 			= fusbh200_irq,
-	.flags 			= HCD_MEMORY | HCD_USB2,
-
-	/*
-	 * basic lifecycle operations
-	 */
-	.reset 			= hcd_fusbh200_init,
-	.start 			= fusbh200_run,
-	.stop 			= fusbh200_stop,
-	.shutdown 		= fusbh200_shutdown,
-
-	/*
-	 * managing i/o requests and associated device resources
-	 */
-	.urb_enqueue 		= fusbh200_urb_enqueue,
-	.urb_dequeue 		= fusbh200_urb_dequeue,
-	.endpoint_disable 	= fusbh200_endpoint_disable,
-	.endpoint_reset 	= fusbh200_endpoint_reset,
-
-	/*
-	 * scheduling support
-	 */
-	.get_frame_number 	= fusbh200_get_frame,
-
-	/*
-	 * root hub support
-	 */
-	.hub_status_data 	= fusbh200_hub_status_data,
-	.hub_control 		= fusbh200_hub_control,
-	.bus_suspend 		= fusbh200_bus_suspend,
-	.bus_resume 		= fusbh200_bus_resume,
-
-	.relinquish_port 	= fusbh200_relinquish_port,
-	.port_handed_over 	= fusbh200_port_handed_over,
-
-	.clear_tt_buffer_complete = fusbh200_clear_tt_buffer_complete,
-};
-
-static void fusbh200_init(struct fusbh200_hcd *fusbh200)
-{
-	u32 reg;
-
-	reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmcsr);
-	reg |= BMCSR_INT_POLARITY;
-	reg &= ~BMCSR_VBUS_OFF;
-	fusbh200_writel(fusbh200, reg, &fusbh200->regs->bmcsr);
-
-	reg = fusbh200_readl(fusbh200, &fusbh200->regs->bmier);
-	fusbh200_writel(fusbh200, reg | BMIER_OVC_EN | BMIER_VBUS_ERR_EN,
-		&fusbh200->regs->bmier);
-}
-
-/**
- * fusbh200_hcd_probe - initialize faraday FUSBH200 HCDs
- *
- * Allocates basic resources for this USB host controller, and
- * then invokes the start() method for the HCD associated with it
- * through the hotplug entry's driver_data.
- */
-static int fusbh200_hcd_probe(struct platform_device *pdev)
-{
-	struct device			*dev = &pdev->dev;
-	struct usb_hcd 			*hcd;
-	struct resource			*res;
-	int 				irq;
-	int 				retval = -ENODEV;
-	struct fusbh200_hcd 		*fusbh200;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	pdev->dev.power.power_state = PMSG_ON;
-
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res) {
-		dev_err(dev,
-			"Found HC with no IRQ. Check %s setup!\n",
-			dev_name(dev));
-		return -ENODEV;
-	}
-
-	irq = res->start;
-
-	hcd = usb_create_hcd(&fusbh200_fusbh200_hc_driver, dev,
-			dev_name(dev));
-	if (!hcd) {
-		dev_err(dev, "failed to create hcd with err %d\n", retval);
-		retval = -ENOMEM;
-		goto fail_create_hcd;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev,
-			"Found HC with no register addr. Check %s setup!\n",
-			dev_name(dev));
-		retval = -ENODEV;
-		goto fail_request_resource;
-	}
-
-	hcd->rsrc_start = res->start;
-	hcd->rsrc_len = resource_size(res);
-	hcd->has_tt = 1;
-
-	if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
-				fusbh200_fusbh200_hc_driver.description)) {
-		dev_dbg(dev, "controller already in use\n");
-		retval = -EBUSY;
-		goto fail_request_resource;
-	}
-
-	res = platform_get_resource(pdev, IORESOURCE_IO, 0);
-	if (!res) {
-		dev_err(dev,
-			"Found HC with no register addr. Check %s setup!\n",
-			dev_name(dev));
-		retval = -ENODEV;
-		goto fail_request_resource;
-	}
-
-	hcd->regs = ioremap_nocache(res->start, resource_size(res));
-	if (hcd->regs == NULL) {
-		dev_dbg(dev, "error mapping memory\n");
-		retval = -EFAULT;
-		goto fail_ioremap;
-	}
-
-	fusbh200 = hcd_to_fusbh200(hcd);
-
-	fusbh200->caps = hcd->regs;
-
-	retval = fusbh200_setup(hcd);
-	if (retval)
-		goto fail_add_hcd;
-
-	fusbh200_init(fusbh200);
-
-	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
-	if (retval) {
-		dev_err(dev, "failed to add hcd with err %d\n", retval);
-		goto fail_add_hcd;
-	}
-	device_wakeup_enable(hcd->self.controller);
-
-	return retval;
-
-fail_add_hcd:
-	iounmap(hcd->regs);
-fail_ioremap:
-	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-fail_request_resource:
-	usb_put_hcd(hcd);
-fail_create_hcd:
-	dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval);
-	return retval;
-}
-
-/**
- * fusbh200_hcd_remove - shutdown processing for EHCI HCDs
- * @dev: USB Host Controller being removed
- *
- * Reverses the effect of fotg2xx_usb_hcd_probe(), first invoking
- * the HCD's stop() method.  It is always called from a thread
- * context, normally "rmmod", "apmd", or something similar.
- */
-static int fusbh200_hcd_remove(struct platform_device *pdev)
-{
-	struct device *dev	= &pdev->dev;
-	struct usb_hcd *hcd	= dev_get_drvdata(dev);
-
-	if (!hcd)
-		return 0;
-
-	usb_remove_hcd(hcd);
-	iounmap(hcd->regs);
-	release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-	usb_put_hcd(hcd);
-
-	return 0;
-}
-
-static struct platform_driver fusbh200_hcd_fusbh200_driver = {
-	.driver = {
-		.name   = "fusbh200",
-	},
-	.probe  = fusbh200_hcd_probe,
-	.remove = fusbh200_hcd_remove,
-};
-
-static int __init fusbh200_hcd_init(void)
-{
-	int retval = 0;
-
-	if (usb_disabled())
-		return -ENODEV;
-
-	printk(KERN_INFO "%s: " DRIVER_DESC "\n", hcd_name);
-	set_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-	if (test_bit(USB_UHCI_LOADED, &usb_hcds_loaded) ||
-			test_bit(USB_OHCI_LOADED, &usb_hcds_loaded))
-		printk(KERN_WARNING "Warning! fusbh200_hcd should always be loaded"
-				" before uhci_hcd and ohci_hcd, not after\n");
-
-	pr_debug("%s: block sizes: qh %Zd qtd %Zd itd %Zd\n",
-		 hcd_name,
-		 sizeof(struct fusbh200_qh), sizeof(struct fusbh200_qtd),
-		 sizeof(struct fusbh200_itd));
-
-	fusbh200_debug_root = debugfs_create_dir("fusbh200", usb_debug_root);
-	if (!fusbh200_debug_root) {
-		retval = -ENOENT;
-		goto err_debug;
-	}
-
-	retval = platform_driver_register(&fusbh200_hcd_fusbh200_driver);
-	if (retval < 0)
-		goto clean;
-	return retval;
-
-	platform_driver_unregister(&fusbh200_hcd_fusbh200_driver);
-clean:
-	debugfs_remove(fusbh200_debug_root);
-	fusbh200_debug_root = NULL;
-err_debug:
-	clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-	return retval;
-}
-module_init(fusbh200_hcd_init);
-
-static void __exit fusbh200_hcd_cleanup(void)
-{
-	platform_driver_unregister(&fusbh200_hcd_fusbh200_driver);
-	debugfs_remove(fusbh200_debug_root);
-	clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded);
-}
-module_exit(fusbh200_hcd_cleanup);
diff --git a/kernel/drivers/usb/host/fusbh200.h b/kernel/drivers/usb/host/fusbh200.h
deleted file mode 100644
index d6e5b3d4a..000000000
--- a/kernel/drivers/usb/host/fusbh200.h
+++ /dev/null
@@ -1,675 +0,0 @@
-#ifndef __LINUX_FUSBH200_H
-#define __LINUX_FUSBH200_H
-
-#include <linux/usb/ehci-dbgp.h>
-
-/* definitions used for the EHCI driver */
-
-/*
- * __hc32 and __hc16 are "Host Controller" types, they may be equivalent to
- * __leXX (normally) or __beXX (given FUSBH200_BIG_ENDIAN_DESC), depending on
- * the host controller implementation.
- *
- * To facilitate the strongest possible byte-order checking from "sparse"
- * and so on, we use __leXX unless that's not practical.
- */
-#define __hc32	__le32
-#define __hc16	__le16
-
-/* statistics can be kept for tuning/monitoring */
-struct fusbh200_stats {
-	/* irq usage */
-	unsigned long		normal;
-	unsigned long		error;
-	unsigned long		iaa;
-	unsigned long		lost_iaa;
-
-	/* termination of urbs from core */
-	unsigned long		complete;
-	unsigned long		unlink;
-};
-
-/* fusbh200_hcd->lock guards shared data against other CPUs:
- *   fusbh200_hcd:	async, unlink, periodic (and shadow), ...
- *   usb_host_endpoint: hcpriv
- *   fusbh200_qh:	qh_next, qtd_list
- *   fusbh200_qtd:	qtd_list
- *
- * Also, hold this lock when talking to HC registers or
- * when updating hw_* fields in shared qh/qtd/... structures.
- */
-
-#define	FUSBH200_MAX_ROOT_PORTS	1		/* see HCS_N_PORTS */
-
-/*
- * fusbh200_rh_state values of FUSBH200_RH_RUNNING or above mean that the
- * controller may be doing DMA.  Lower values mean there's no DMA.
- */
-enum fusbh200_rh_state {
-	FUSBH200_RH_HALTED,
-	FUSBH200_RH_SUSPENDED,
-	FUSBH200_RH_RUNNING,
-	FUSBH200_RH_STOPPING
-};
-
-/*
- * Timer events, ordered by increasing delay length.
- * Always update event_delays_ns[] and event_handlers[] (defined in
- * ehci-timer.c) in parallel with this list.
- */
-enum fusbh200_hrtimer_event {
-	FUSBH200_HRTIMER_POLL_ASS,		/* Poll for async schedule off */
-	FUSBH200_HRTIMER_POLL_PSS,		/* Poll for periodic schedule off */
-	FUSBH200_HRTIMER_POLL_DEAD,		/* Wait for dead controller to stop */
-	FUSBH200_HRTIMER_UNLINK_INTR,	/* Wait for interrupt QH unlink */
-	FUSBH200_HRTIMER_FREE_ITDS,		/* Wait for unused iTDs and siTDs */
-	FUSBH200_HRTIMER_ASYNC_UNLINKS,	/* Unlink empty async QHs */
-	FUSBH200_HRTIMER_IAA_WATCHDOG,	/* Handle lost IAA interrupts */
-	FUSBH200_HRTIMER_DISABLE_PERIODIC,	/* Wait to disable periodic sched */
-	FUSBH200_HRTIMER_DISABLE_ASYNC,	/* Wait to disable async sched */
-	FUSBH200_HRTIMER_IO_WATCHDOG,	/* Check for missing IRQs */
-	FUSBH200_HRTIMER_NUM_EVENTS		/* Must come last */
-};
-#define FUSBH200_HRTIMER_NO_EVENT	99
-
-struct fusbh200_hcd {			/* one per controller */
-	/* timing support */
-	enum fusbh200_hrtimer_event	next_hrtimer_event;
-	unsigned		enabled_hrtimer_events;
-	ktime_t			hr_timeouts[FUSBH200_HRTIMER_NUM_EVENTS];
-	struct hrtimer		hrtimer;
-
-	int			PSS_poll_count;
-	int			ASS_poll_count;
-	int			died_poll_count;
-
-	/* glue to PCI and HCD framework */
-	struct fusbh200_caps __iomem *caps;
-	struct fusbh200_regs __iomem *regs;
-	struct ehci_dbg_port __iomem *debug;
-
-	__u32			hcs_params;	/* cached register copy */
-	spinlock_t		lock;
-	enum fusbh200_rh_state	rh_state;
-
-	/* general schedule support */
-	bool			scanning:1;
-	bool			need_rescan:1;
-	bool			intr_unlinking:1;
-	bool			async_unlinking:1;
-	bool			shutdown:1;
-	struct fusbh200_qh		*qh_scan_next;
-
-	/* async schedule support */
-	struct fusbh200_qh		*async;
-	struct fusbh200_qh		*dummy;		/* For AMD quirk use */
-	struct fusbh200_qh		*async_unlink;
-	struct fusbh200_qh		*async_unlink_last;
-	struct fusbh200_qh		*async_iaa;
-	unsigned		async_unlink_cycle;
-	unsigned		async_count;	/* async activity count */
-
-	/* periodic schedule support */
-#define	DEFAULT_I_TDPS		1024		/* some HCs can do less */
-	unsigned		periodic_size;
-	__hc32			*periodic;	/* hw periodic table */
-	dma_addr_t		periodic_dma;
-	struct list_head	intr_qh_list;
-	unsigned		i_thresh;	/* uframes HC might cache */
-
-	union fusbh200_shadow	*pshadow;	/* mirror hw periodic table */
-	struct fusbh200_qh		*intr_unlink;
-	struct fusbh200_qh		*intr_unlink_last;
-	unsigned		intr_unlink_cycle;
-	unsigned		now_frame;	/* frame from HC hardware */
-	unsigned		next_frame;	/* scan periodic, start here */
-	unsigned		intr_count;	/* intr activity count */
-	unsigned		isoc_count;	/* isoc activity count */
-	unsigned		periodic_count;	/* periodic activity count */
-	unsigned		uframe_periodic_max; /* max periodic time per uframe */
-
-
-	/* list of itds completed while now_frame was still active */
-	struct list_head	cached_itd_list;
-	struct fusbh200_itd	*last_itd_to_free;
-
-	/* per root hub port */
-	unsigned long		reset_done [FUSBH200_MAX_ROOT_PORTS];
-
-	/* bit vectors (one bit per port) */
-	unsigned long		bus_suspended;		/* which ports were
-			already suspended at the start of a bus suspend */
-	unsigned long		companion_ports;	/* which ports are
-			dedicated to the companion controller */
-	unsigned long		owned_ports;		/* which ports are
-			owned by the companion during a bus suspend */
-	unsigned long		port_c_suspend;		/* which ports have
-			the change-suspend feature turned on */
-	unsigned long		suspended_ports;	/* which ports are
-			suspended */
-	unsigned long		resuming_ports;		/* which ports have
-			started to resume */
-
-	/* per-HC memory pools (could be per-bus, but ...) */
-	struct dma_pool		*qh_pool;	/* qh per active urb */
-	struct dma_pool		*qtd_pool;	/* one or more per qh */
-	struct dma_pool		*itd_pool;	/* itd per iso urb */
-
-	unsigned		random_frame;
-	unsigned long		next_statechange;
-	ktime_t			last_periodic_enable;
-	u32			command;
-
-	/* SILICON QUIRKS */
-	unsigned		need_io_watchdog:1;
-	unsigned		fs_i_thresh:1;	/* Intel iso scheduling */
-
-	u8			sbrn;		/* packed release number */
-
-	/* irq statistics */
-	struct fusbh200_stats	stats;
-#	define COUNT(x) do { (x)++; } while (0)
-
-	/* debug files */
-	struct dentry		*debug_dir;
-};
-
-/* convert between an HCD pointer and the corresponding FUSBH200_HCD */
-static inline struct fusbh200_hcd *hcd_to_fusbh200 (struct usb_hcd *hcd)
-{
-	return (struct fusbh200_hcd *) (hcd->hcd_priv);
-}
-static inline struct usb_hcd *fusbh200_to_hcd (struct fusbh200_hcd *fusbh200)
-{
-	return container_of ((void *) fusbh200, struct usb_hcd, hcd_priv);
-}
-
-/*-------------------------------------------------------------------------*/
-
-/* EHCI register interface, corresponds to EHCI Revision 0.95 specification */
-
-/* Section 2.2 Host Controller Capability Registers */
-struct fusbh200_caps {
-	/* these fields are specified as 8 and 16 bit registers,
-	 * but some hosts can't perform 8 or 16 bit PCI accesses.
-	 * some hosts treat caplength and hciversion as parts of a 32-bit
-	 * register, others treat them as two separate registers, this
-	 * affects the memory map for big endian controllers.
-	 */
-	u32		hc_capbase;
-#define HC_LENGTH(fusbh200, p)	(0x00ff&((p) >> /* bits 7:0 / offset 00h */ \
-				(fusbh200_big_endian_capbase(fusbh200) ? 24 : 0)))
-#define HC_VERSION(fusbh200, p)	(0xffff&((p) >> /* bits 31:16 / offset 02h */ \
-				(fusbh200_big_endian_capbase(fusbh200) ? 0 : 16)))
-	u32		hcs_params;     /* HCSPARAMS - offset 0x4 */
-#define HCS_N_PORTS(p)		(((p)>>0)&0xf)	/* bits 3:0, ports on HC */
-
-	u32		hcc_params;      /* HCCPARAMS - offset 0x8 */
-#define HCC_CANPARK(p)		((p)&(1 << 2))  /* true: can park on async qh */
-#define HCC_PGM_FRAMELISTLEN(p) ((p)&(1 << 1))  /* true: periodic_size changes*/
-	u8		portroute[8];	 /* nibbles for routing - offset 0xC */
-};
-
-
-/* Section 2.3 Host Controller Operational Registers */
-struct fusbh200_regs {
-
-	/* USBCMD: offset 0x00 */
-	u32		command;
-
-/* EHCI 1.1 addendum */
-/* 23:16 is r/w intr rate, in microframes; default "8" == 1/msec */
-#define CMD_PARK	(1<<11)		/* enable "park" on async qh */
-#define CMD_PARK_CNT(c)	(((c)>>8)&3)	/* how many transfers to park for */
-#define CMD_IAAD	(1<<6)		/* "doorbell" interrupt async advance */
-#define CMD_ASE		(1<<5)		/* async schedule enable */
-#define CMD_PSE		(1<<4)		/* periodic schedule enable */
-/* 3:2 is periodic frame list size */
-#define CMD_RESET	(1<<1)		/* reset HC not bus */
-#define CMD_RUN		(1<<0)		/* start/stop HC */
-
-	/* USBSTS: offset 0x04 */
-	u32		status;
-#define STS_ASS		(1<<15)		/* Async Schedule Status */
-#define STS_PSS		(1<<14)		/* Periodic Schedule Status */
-#define STS_RECL	(1<<13)		/* Reclamation */
-#define STS_HALT	(1<<12)		/* Not running (any reason) */
-/* some bits reserved */
-	/* these STS_* flags are also intr_enable bits (USBINTR) */
-#define STS_IAA		(1<<5)		/* Interrupted on async advance */
-#define STS_FATAL	(1<<4)		/* such as some PCI access errors */
-#define STS_FLR		(1<<3)		/* frame list rolled over */
-#define STS_PCD		(1<<2)		/* port change detect */
-#define STS_ERR		(1<<1)		/* "error" completion (overflow, ...) */
-#define STS_INT		(1<<0)		/* "normal" completion (short, ...) */
-
-	/* USBINTR: offset 0x08 */
-	u32		intr_enable;
-
-	/* FRINDEX: offset 0x0C */
-	u32		frame_index;	/* current microframe number */
-	/* CTRLDSSEGMENT: offset 0x10 */
-	u32		segment;	/* address bits 63:32 if needed */
-	/* PERIODICLISTBASE: offset 0x14 */
-	u32		frame_list;	/* points to periodic list */
-	/* ASYNCLISTADDR: offset 0x18 */
-	u32		async_next;	/* address of next async queue head */
-
-	u32	reserved1;
-	/* PORTSC: offset 0x20 */
-	u32	port_status;
-/* 31:23 reserved */
-#define PORT_USB11(x) (((x)&(3<<10)) == (1<<10))	/* USB 1.1 device */
-#define PORT_RESET	(1<<8)		/* reset port */
-#define PORT_SUSPEND	(1<<7)		/* suspend port */
-#define PORT_RESUME	(1<<6)		/* resume it */
-#define PORT_PEC	(1<<3)		/* port enable change */
-#define PORT_PE		(1<<2)		/* port enable */
-#define PORT_CSC	(1<<1)		/* connect status change */
-#define PORT_CONNECT	(1<<0)		/* device connected */
-#define PORT_RWC_BITS   (PORT_CSC | PORT_PEC)
-
-	u32	reserved2[3];
-
-	/* BMCSR: offset 0x30 */
-	u32	bmcsr; /* Bus Moniter Control/Status Register */
-#define BMCSR_HOST_SPD_TYP	(3<<9)
-#define BMCSR_VBUS_OFF		(1<<4)
-#define BMCSR_INT_POLARITY	(1<<3)
-
-	/* BMISR: offset 0x34 */
-	u32	bmisr; /* Bus Moniter Interrupt Status Register*/
-#define BMISR_OVC		(1<<1)
-
-	/* BMIER: offset 0x38 */
-	u32	bmier; /* Bus Moniter Interrupt Enable Register */
-#define BMIER_OVC_EN		(1<<1)
-#define BMIER_VBUS_ERR_EN	(1<<0)
-};
-
-/*-------------------------------------------------------------------------*/
-
-#define	QTD_NEXT(fusbh200, dma)	cpu_to_hc32(fusbh200, (u32)dma)
-
-/*
- * EHCI Specification 0.95 Section 3.5
- * QTD: describe data transfer components (buffer, direction, ...)
- * See Fig 3-6 "Queue Element Transfer Descriptor Block Diagram".
- *
- * These are associated only with "QH" (Queue Head) structures,
- * used with control, bulk, and interrupt transfers.
- */
-struct fusbh200_qtd {
-	/* first part defined by EHCI spec */
-	__hc32			hw_next;	/* see EHCI 3.5.1 */
-	__hc32			hw_alt_next;    /* see EHCI 3.5.2 */
-	__hc32			hw_token;       /* see EHCI 3.5.3 */
-#define	QTD_TOGGLE	(1 << 31)	/* data toggle */
-#define	QTD_LENGTH(tok)	(((tok)>>16) & 0x7fff)
-#define	QTD_IOC		(1 << 15)	/* interrupt on complete */
-#define	QTD_CERR(tok)	(((tok)>>10) & 0x3)
-#define	QTD_PID(tok)	(((tok)>>8) & 0x3)
-#define	QTD_STS_ACTIVE	(1 << 7)	/* HC may execute this */
-#define	QTD_STS_HALT	(1 << 6)	/* halted on error */
-#define	QTD_STS_DBE	(1 << 5)	/* data buffer error (in HC) */
-#define	QTD_STS_BABBLE	(1 << 4)	/* device was babbling (qtd halted) */
-#define	QTD_STS_XACT	(1 << 3)	/* device gave illegal response */
-#define	QTD_STS_MMF	(1 << 2)	/* incomplete split transaction */
-#define	QTD_STS_STS	(1 << 1)	/* split transaction state */
-#define	QTD_STS_PING	(1 << 0)	/* issue PING? */
-
-#define ACTIVE_BIT(fusbh200)	cpu_to_hc32(fusbh200, QTD_STS_ACTIVE)
-#define HALT_BIT(fusbh200)		cpu_to_hc32(fusbh200, QTD_STS_HALT)
-#define STATUS_BIT(fusbh200)	cpu_to_hc32(fusbh200, QTD_STS_STS)
-
-	__hc32			hw_buf [5];        /* see EHCI 3.5.4 */
-	__hc32			hw_buf_hi [5];        /* Appendix B */
-
-	/* the rest is HCD-private */
-	dma_addr_t		qtd_dma;		/* qtd address */
-	struct list_head	qtd_list;		/* sw qtd list */
-	struct urb		*urb;			/* qtd's urb */
-	size_t			length;			/* length of buffer */
-} __attribute__ ((aligned (32)));
-
-/* mask NakCnt+T in qh->hw_alt_next */
-#define QTD_MASK(fusbh200)	cpu_to_hc32 (fusbh200, ~0x1f)
-
-#define IS_SHORT_READ(token) (QTD_LENGTH (token) != 0 && QTD_PID (token) == 1)
-
-/*-------------------------------------------------------------------------*/
-
-/* type tag from {qh,itd,fstn}->hw_next */
-#define Q_NEXT_TYPE(fusbh200,dma)	((dma) & cpu_to_hc32(fusbh200, 3 << 1))
-
-/*
- * Now the following defines are not converted using the
- * cpu_to_le32() macro anymore, since we have to support
- * "dynamic" switching between be and le support, so that the driver
- * can be used on one system with SoC EHCI controller using big-endian
- * descriptors as well as a normal little-endian PCI EHCI controller.
- */
-/* values for that type tag */
-#define Q_TYPE_ITD	(0 << 1)
-#define Q_TYPE_QH	(1 << 1)
-#define Q_TYPE_SITD	(2 << 1)
-#define Q_TYPE_FSTN	(3 << 1)
-
-/* next async queue entry, or pointer to interrupt/periodic QH */
-#define QH_NEXT(fusbh200,dma)	(cpu_to_hc32(fusbh200, (((u32)dma)&~0x01f)|Q_TYPE_QH))
-
-/* for periodic/async schedules and qtd lists, mark end of list */
-#define FUSBH200_LIST_END(fusbh200)	cpu_to_hc32(fusbh200, 1) /* "null pointer" to hw */
-
-/*
- * Entries in periodic shadow table are pointers to one of four kinds
- * of data structure.  That's dictated by the hardware; a type tag is
- * encoded in the low bits of the hardware's periodic schedule.  Use
- * Q_NEXT_TYPE to get the tag.
- *
- * For entries in the async schedule, the type tag always says "qh".
- */
-union fusbh200_shadow {
-	struct fusbh200_qh	*qh;		/* Q_TYPE_QH */
-	struct fusbh200_itd	*itd;		/* Q_TYPE_ITD */
-	struct fusbh200_fstn	*fstn;		/* Q_TYPE_FSTN */
-	__hc32			*hw_next;	/* (all types) */
-	void			*ptr;
-};
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI Specification 0.95 Section 3.6
- * QH: describes control/bulk/interrupt endpoints
- * See Fig 3-7 "Queue Head Structure Layout".
- *
- * These appear in both the async and (for interrupt) periodic schedules.
- */
-
-/* first part defined by EHCI spec */
-struct fusbh200_qh_hw {
-	__hc32			hw_next;	/* see EHCI 3.6.1 */
-	__hc32			hw_info1;       /* see EHCI 3.6.2 */
-#define	QH_CONTROL_EP	(1 << 27)	/* FS/LS control endpoint */
-#define	QH_HEAD		(1 << 15)	/* Head of async reclamation list */
-#define	QH_TOGGLE_CTL	(1 << 14)	/* Data toggle control */
-#define	QH_HIGH_SPEED	(2 << 12)	/* Endpoint speed */
-#define	QH_LOW_SPEED	(1 << 12)
-#define	QH_FULL_SPEED	(0 << 12)
-#define	QH_INACTIVATE	(1 << 7)	/* Inactivate on next transaction */
-	__hc32			hw_info2;        /* see EHCI 3.6.2 */
-#define	QH_SMASK	0x000000ff
-#define	QH_CMASK	0x0000ff00
-#define	QH_HUBADDR	0x007f0000
-#define	QH_HUBPORT	0x3f800000
-#define	QH_MULT		0xc0000000
-	__hc32			hw_current;	/* qtd list - see EHCI 3.6.4 */
-
-	/* qtd overlay (hardware parts of a struct fusbh200_qtd) */
-	__hc32			hw_qtd_next;
-	__hc32			hw_alt_next;
-	__hc32			hw_token;
-	__hc32			hw_buf [5];
-	__hc32			hw_buf_hi [5];
-} __attribute__ ((aligned(32)));
-
-struct fusbh200_qh {
-	struct fusbh200_qh_hw	*hw;		/* Must come first */
-	/* the rest is HCD-private */
-	dma_addr_t		qh_dma;		/* address of qh */
-	union fusbh200_shadow	qh_next;	/* ptr to qh; or periodic */
-	struct list_head	qtd_list;	/* sw qtd list */
-	struct list_head	intr_node;	/* list of intr QHs */
-	struct fusbh200_qtd		*dummy;
-	struct fusbh200_qh		*unlink_next;	/* next on unlink list */
-
-	unsigned		unlink_cycle;
-
-	u8			needs_rescan;	/* Dequeue during giveback */
-	u8			qh_state;
-#define	QH_STATE_LINKED		1		/* HC sees this */
-#define	QH_STATE_UNLINK		2		/* HC may still see this */
-#define	QH_STATE_IDLE		3		/* HC doesn't see this */
-#define	QH_STATE_UNLINK_WAIT	4		/* LINKED and on unlink q */
-#define	QH_STATE_COMPLETING	5		/* don't touch token.HALT */
-
-	u8			xacterrs;	/* XactErr retry counter */
-#define	QH_XACTERR_MAX		32		/* XactErr retry limit */
-
-	/* periodic schedule info */
-	u8			usecs;		/* intr bandwidth */
-	u8			gap_uf;		/* uframes split/csplit gap */
-	u8			c_usecs;	/* ... split completion bw */
-	u16			tt_usecs;	/* tt downstream bandwidth */
-	unsigned short		period;		/* polling interval */
-	unsigned short		start;		/* where polling starts */
-#define NO_FRAME ((unsigned short)~0)			/* pick new start */
-
-	struct usb_device	*dev;		/* access to TT */
-	unsigned		is_out:1;	/* bulk or intr OUT */
-	unsigned		clearing_tt:1;	/* Clear-TT-Buf in progress */
-};
-
-/*-------------------------------------------------------------------------*/
-
-/* description of one iso transaction (up to 3 KB data if highspeed) */
-struct fusbh200_iso_packet {
-	/* These will be copied to iTD when scheduling */
-	u64			bufp;		/* itd->hw_bufp{,_hi}[pg] |= */
-	__hc32			transaction;	/* itd->hw_transaction[i] |= */
-	u8			cross;		/* buf crosses pages */
-	/* for full speed OUT splits */
-	u32			buf1;
-};
-
-/* temporary schedule data for packets from iso urbs (both speeds)
- * each packet is one logical usb transaction to the device (not TT),
- * beginning at stream->next_uframe
- */
-struct fusbh200_iso_sched {
-	struct list_head	td_list;
-	unsigned		span;
-	struct fusbh200_iso_packet	packet [0];
-};
-
-/*
- * fusbh200_iso_stream - groups all (s)itds for this endpoint.
- * acts like a qh would, if EHCI had them for ISO.
- */
-struct fusbh200_iso_stream {
-	/* first field matches fusbh200_hq, but is NULL */
-	struct fusbh200_qh_hw	*hw;
-
-	u8			bEndpointAddress;
-	u8			highspeed;
-	struct list_head	td_list;	/* queued itds */
-	struct list_head	free_list;	/* list of unused itds */
-	struct usb_device	*udev;
-	struct usb_host_endpoint *ep;
-
-	/* output of (re)scheduling */
-	int			next_uframe;
-	__hc32			splits;
-
-	/* the rest is derived from the endpoint descriptor,
-	 * trusting urb->interval == f(epdesc->bInterval) and
-	 * including the extra info for hw_bufp[0..2]
-	 */
-	u8			usecs, c_usecs;
-	u16			interval;
-	u16			tt_usecs;
-	u16			maxp;
-	u16			raw_mask;
-	unsigned		bandwidth;
-
-	/* This is used to initialize iTD's hw_bufp fields */
-	__hc32			buf0;
-	__hc32			buf1;
-	__hc32			buf2;
-
-	/* this is used to initialize sITD's tt info */
-	__hc32			address;
-};
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI Specification 0.95 Section 3.3
- * Fig 3-4 "Isochronous Transaction Descriptor (iTD)"
- *
- * Schedule records for high speed iso xfers
- */
-struct fusbh200_itd {
-	/* first part defined by EHCI spec */
-	__hc32			hw_next;           /* see EHCI 3.3.1 */
-	__hc32			hw_transaction [8]; /* see EHCI 3.3.2 */
-#define FUSBH200_ISOC_ACTIVE        (1<<31)        /* activate transfer this slot */
-#define FUSBH200_ISOC_BUF_ERR       (1<<30)        /* Data buffer error */
-#define FUSBH200_ISOC_BABBLE        (1<<29)        /* babble detected */
-#define FUSBH200_ISOC_XACTERR       (1<<28)        /* XactErr - transaction error */
-#define	FUSBH200_ITD_LENGTH(tok)	(((tok)>>16) & 0x0fff)
-#define	FUSBH200_ITD_IOC		(1 << 15)	/* interrupt on complete */
-
-#define ITD_ACTIVE(fusbh200)	cpu_to_hc32(fusbh200, FUSBH200_ISOC_ACTIVE)
-
-	__hc32			hw_bufp [7];	/* see EHCI 3.3.3 */
-	__hc32			hw_bufp_hi [7];	/* Appendix B */
-
-	/* the rest is HCD-private */
-	dma_addr_t		itd_dma;	/* for this itd */
-	union fusbh200_shadow	itd_next;	/* ptr to periodic q entry */
-
-	struct urb		*urb;
-	struct fusbh200_iso_stream	*stream;	/* endpoint's queue */
-	struct list_head	itd_list;	/* list of stream's itds */
-
-	/* any/all hw_transactions here may be used by that urb */
-	unsigned		frame;		/* where scheduled */
-	unsigned		pg;
-	unsigned		index[8];	/* in urb->iso_frame_desc */
-} __attribute__ ((aligned (32)));
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * EHCI Specification 0.96 Section 3.7
- * Periodic Frame Span Traversal Node (FSTN)
- *
- * Manages split interrupt transactions (using TT) that span frame boundaries
- * into uframes 0/1; see 4.12.2.2.  In those uframes, a "save place" FSTN
- * makes the HC jump (back) to a QH to scan for fs/ls QH completions until
- * it hits a "restore" FSTN; then it returns to finish other uframe 0/1 work.
- */
-struct fusbh200_fstn {
-	__hc32			hw_next;	/* any periodic q entry */
-	__hc32			hw_prev;	/* qh or FUSBH200_LIST_END */
-
-	/* the rest is HCD-private */
-	dma_addr_t		fstn_dma;
-	union fusbh200_shadow	fstn_next;	/* ptr to periodic q entry */
-} __attribute__ ((aligned (32)));
-
-/*-------------------------------------------------------------------------*/
-
-/* Prepare the PORTSC wakeup flags during controller suspend/resume */
-
-#define fusbh200_prepare_ports_for_controller_suspend(fusbh200, do_wakeup)	\
-		fusbh200_adjust_port_wakeup_flags(fusbh200, true, do_wakeup);
-
-#define fusbh200_prepare_ports_for_controller_resume(fusbh200)			\
-		fusbh200_adjust_port_wakeup_flags(fusbh200, false, false);
-
-/*-------------------------------------------------------------------------*/
-
-/*
- * Some EHCI controllers have a Transaction Translator built into the
- * root hub. This is a non-standard feature.  Each controller will need
- * to add code to the following inline functions, and call them as
- * needed (mostly in root hub code).
- */
-
-static inline unsigned int
-fusbh200_get_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc)
-{
-	return (readl(&fusbh200->regs->bmcsr)
-		& BMCSR_HOST_SPD_TYP) >> 9;
-}
-
-/* Returns the speed of a device attached to a port on the root hub. */
-static inline unsigned int
-fusbh200_port_speed(struct fusbh200_hcd *fusbh200, unsigned int portsc)
-{
-	switch (fusbh200_get_speed(fusbh200, portsc)) {
-	case 0:
-		return 0;
-	case 1:
-		return USB_PORT_STAT_LOW_SPEED;
-	case 2:
-	default:
-		return USB_PORT_STAT_HIGH_SPEED;
-	}
-}
-
-/*-------------------------------------------------------------------------*/
-
-#define	fusbh200_has_fsl_portno_bug(e)		(0)
-
-/*
- * While most USB host controllers implement their registers in
- * little-endian format, a minority (celleb companion chip) implement
- * them in big endian format.
- *
- * This attempts to support either format at compile time without a
- * runtime penalty, or both formats with the additional overhead
- * of checking a flag bit.
- *
- */
-
-#define fusbh200_big_endian_mmio(e)	0
-#define fusbh200_big_endian_capbase(e)	0
-
-static inline unsigned int fusbh200_readl(const struct fusbh200_hcd *fusbh200,
-		__u32 __iomem * regs)
-{
-	return readl(regs);
-}
-
-static inline void fusbh200_writel(const struct fusbh200_hcd *fusbh200,
-		const unsigned int val, __u32 __iomem *regs)
-{
-	writel(val, regs);
-}
-
-/* cpu to fusbh200 */
-static inline __hc32 cpu_to_hc32 (const struct fusbh200_hcd *fusbh200, const u32 x)
-{
-	return cpu_to_le32(x);
-}
-
-/* fusbh200 to cpu */
-static inline u32 hc32_to_cpu (const struct fusbh200_hcd *fusbh200, const __hc32 x)
-{
-	return le32_to_cpu(x);
-}
-
-static inline u32 hc32_to_cpup (const struct fusbh200_hcd *fusbh200, const __hc32 *x)
-{
-	return le32_to_cpup(x);
-}
-
-/*-------------------------------------------------------------------------*/
-
-static inline unsigned fusbh200_read_frame_index(struct fusbh200_hcd *fusbh200)
-{
-	return fusbh200_readl(fusbh200, &fusbh200->regs->frame_index);
-}
-
-#define fusbh200_itdlen(urb, desc, t) ({			\
-	usb_pipein((urb)->pipe) ?				\
-	(desc)->length - FUSBH200_ITD_LENGTH(t) :			\
-	FUSBH200_ITD_LENGTH(t);					\
-})
-/*-------------------------------------------------------------------------*/
-
-#endif /* __LINUX_FUSBH200_H */
diff --git a/kernel/drivers/usb/host/isp116x-hcd.c b/kernel/drivers/usb/host/isp116x-hcd.c
index 13181dcd9..d089b3fb7 100644
--- a/kernel/drivers/usb/host/isp116x-hcd.c
+++ b/kernel/drivers/usb/host/isp116x-hcd.c
@@ -500,7 +500,8 @@ static void start_atl_transfers(struct isp116x *isp116x)
 	if (isp116x->periodic_count) {
 		isp116x->fmindex = index =
 		    (isp116x->fmindex + 1) & (PERIODIC_SIZE - 1);
-		if ((load = isp116x->load[index])) {
+		load = isp116x->load[index];
+		if (load) {
 			/* Bring all int transfers for this frame
 			   into the active queue */
 			isp116x->atl_active = last_ep =
diff --git a/kernel/drivers/usb/host/max3421-hcd.c b/kernel/drivers/usb/host/max3421-hcd.c
index fc1fd4039..bd98706d1 100644
--- a/kernel/drivers/usb/host/max3421-hcd.c
+++ b/kernel/drivers/usb/host/max3421-hcd.c
@@ -1944,7 +1944,6 @@ static struct spi_driver max3421_driver = {
 	.remove		= max3421_remove,
 	.driver		= {
 		.name	= "max3421-hcd",
-		.owner	= THIS_MODULE,
 	},
 };
 
diff --git a/kernel/drivers/usb/host/ohci-at91.c b/kernel/drivers/usb/host/ohci-at91.c
index 15df00cce..8c6e15bd6 100644
--- a/kernel/drivers/usb/host/ohci-at91.c
+++ b/kernel/drivers/usb/host/ohci-at91.c
@@ -36,6 +36,17 @@
 #define hcd_to_ohci_at91_priv(h) \
 	((struct ohci_at91_priv *)hcd_to_ohci(h)->priv)
 
+#define AT91_MAX_USBH_PORTS	3
+struct at91_usbh_data {
+	int vbus_pin[AT91_MAX_USBH_PORTS];	/* port power-control pin */
+	int overcurrent_pin[AT91_MAX_USBH_PORTS];
+	u8 ports;				/* number of ports on root hub */
+	u8 overcurrent_supported;
+	u8 vbus_pin_active_low[AT91_MAX_USBH_PORTS];
+	u8 overcurrent_status[AT91_MAX_USBH_PORTS];
+	u8 overcurrent_changed[AT91_MAX_USBH_PORTS];
+};
+
 struct ohci_at91_priv {
 	struct clk *iclk;
 	struct clk *fclk;
@@ -431,7 +442,6 @@ static irqreturn_t ohci_hcd_at91_overcurrent_irq(int irq, void *data)
 	return IRQ_HANDLED;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id at91_ohci_dt_ids[] = {
 	{ .compatible = "atmel,at91rm9200-ohci" },
 	{ /* sentinel */ }
@@ -439,16 +449,17 @@ static const struct of_device_id at91_ohci_dt_ids[] = {
 
 MODULE_DEVICE_TABLE(of, at91_ohci_dt_ids);
 
-static int ohci_at91_of_init(struct platform_device *pdev)
+/*-------------------------------------------------------------------------*/
+
+static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
 {
 	struct device_node *np = pdev->dev.of_node;
-	int i, gpio, ret;
-	enum of_gpio_flags flags;
 	struct at91_usbh_data	*pdata;
-	u32 ports;
-
-	if (!np)
-		return 0;
+	int			i;
+	int			gpio;
+	int			ret;
+	enum of_gpio_flags	flags;
+	u32			ports;
 
 	/* Right now device-tree probed devices don't get dma_mask set.
 	 * Since shared usb code relies on it, set it here for now.
@@ -462,112 +473,83 @@ static int ohci_at91_of_init(struct platform_device *pdev)
 	if (!pdata)
 		return -ENOMEM;
 
+	pdev->dev.platform_data = pdata;
+
 	if (!of_property_read_u32(np, "num-ports", &ports))
 		pdata->ports = ports;
 
 	at91_for_each_port(i) {
-		gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i, &flags);
+		/*
+		 * do not configure PIO if not in relation with
+		 * real USB port on board
+		 */
+		if (i >= pdata->ports) {
+			pdata->vbus_pin[i] = -EINVAL;
+			pdata->overcurrent_pin[i] = -EINVAL;
+			continue;
+		}
+
+		gpio = of_get_named_gpio_flags(np, "atmel,vbus-gpio", i,
+					       &flags);
 		pdata->vbus_pin[i] = gpio;
 		if (!gpio_is_valid(gpio))
 			continue;
 		pdata->vbus_pin_active_low[i] = flags & OF_GPIO_ACTIVE_LOW;
-	}
-
-	at91_for_each_port(i)
-		pdata->overcurrent_pin[i] =
-			of_get_named_gpio_flags(np, "atmel,oc-gpio", i, &flags);
-
-	pdev->dev.platform_data = pdata;
-
-	return 0;
-}
-#else
-static int ohci_at91_of_init(struct platform_device *pdev)
-{
-	return 0;
-}
-#endif
-
-/*-------------------------------------------------------------------------*/
 
-static int ohci_hcd_at91_drv_probe(struct platform_device *pdev)
-{
-	struct at91_usbh_data	*pdata;
-	int			i;
-	int			gpio;
-	int			ret;
-
-	ret = ohci_at91_of_init(pdev);
-	if (ret)
-		return ret;
+		ret = gpio_request(gpio, "ohci_vbus");
+		if (ret) {
+			dev_err(&pdev->dev,
+				"can't request vbus gpio %d\n", gpio);
+			continue;
+		}
+		ret = gpio_direction_output(gpio,
+					!pdata->vbus_pin_active_low[i]);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"can't put vbus gpio %d as output %d\n",
+				gpio, !pdata->vbus_pin_active_low[i]);
+			gpio_free(gpio);
+			continue;
+		}
 
-	pdata = dev_get_platdata(&pdev->dev);
+		ohci_at91_usb_set_power(pdata, i, 1);
+	}
 
-	if (pdata) {
-		at91_for_each_port(i) {
-			/*
-			 * do not configure PIO if not in relation with
-			 * real USB port on board
-			 */
-			if (i >= pdata->ports) {
-				pdata->vbus_pin[i] = -EINVAL;
-				pdata->overcurrent_pin[i] = -EINVAL;
-				break;
-			}
+	at91_for_each_port(i) {
+		if (i >= pdata->ports)
+			break;
 
-			if (!gpio_is_valid(pdata->vbus_pin[i]))
-				continue;
-			gpio = pdata->vbus_pin[i];
+		pdata->overcurrent_pin[i] =
+			of_get_named_gpio_flags(np, "atmel,oc-gpio", i, &flags);
 
-			ret = gpio_request(gpio, "ohci_vbus");
-			if (ret) {
-				dev_err(&pdev->dev,
-					"can't request vbus gpio %d\n", gpio);
-				continue;
-			}
-			ret = gpio_direction_output(gpio,
-						!pdata->vbus_pin_active_low[i]);
-			if (ret) {
-				dev_err(&pdev->dev,
-					"can't put vbus gpio %d as output %d\n",
-					gpio, !pdata->vbus_pin_active_low[i]);
-				gpio_free(gpio);
-				continue;
-			}
+		if (!gpio_is_valid(pdata->overcurrent_pin[i]))
+			continue;
+		gpio = pdata->overcurrent_pin[i];
 
-			ohci_at91_usb_set_power(pdata, i, 1);
+		ret = gpio_request(gpio, "ohci_overcurrent");
+		if (ret) {
+			dev_err(&pdev->dev,
+				"can't request overcurrent gpio %d\n",
+				gpio);
+			continue;
 		}
 
-		at91_for_each_port(i) {
-			if (!gpio_is_valid(pdata->overcurrent_pin[i]))
-				continue;
-			gpio = pdata->overcurrent_pin[i];
-
-			ret = gpio_request(gpio, "ohci_overcurrent");
-			if (ret) {
-				dev_err(&pdev->dev,
-					"can't request overcurrent gpio %d\n",
-					gpio);
-				continue;
-			}
-
-			ret = gpio_direction_input(gpio);
-			if (ret) {
-				dev_err(&pdev->dev,
-					"can't configure overcurrent gpio %d as input\n",
-					gpio);
-				gpio_free(gpio);
-				continue;
-			}
+		ret = gpio_direction_input(gpio);
+		if (ret) {
+			dev_err(&pdev->dev,
+				"can't configure overcurrent gpio %d as input\n",
+				gpio);
+			gpio_free(gpio);
+			continue;
+		}
 
-			ret = request_irq(gpio_to_irq(gpio),
-					  ohci_hcd_at91_overcurrent_irq,
-					  IRQF_SHARED, "ohci_overcurrent", pdev);
-			if (ret) {
-				gpio_free(gpio);
-				dev_err(&pdev->dev,
-					"can't get gpio IRQ for overcurrent\n");
-			}
+		ret = request_irq(gpio_to_irq(gpio),
+				  ohci_hcd_at91_overcurrent_irq,
+				  IRQF_SHARED, "ohci_overcurrent", pdev);
+		if (ret) {
+			gpio_free(gpio);
+			dev_err(&pdev->dev,
+				"can't get gpio IRQ for overcurrent\n");
 		}
 	}
 
@@ -673,7 +655,7 @@ static struct platform_driver ohci_hcd_at91_driver = {
 	.driver		= {
 		.name	= "at91_ohci",
 		.pm	= &ohci_hcd_at91_pm_ops,
-		.of_match_table	= of_match_ptr(at91_ohci_dt_ids),
+		.of_match_table	= at91_ohci_dt_ids,
 	},
 };
 
diff --git a/kernel/drivers/usb/host/ohci-dbg.c b/kernel/drivers/usb/host/ohci-dbg.c
index 04f218693..c3eded317 100644
--- a/kernel/drivers/usb/host/ohci-dbg.c
+++ b/kernel/drivers/usb/host/ohci-dbg.c
@@ -491,7 +491,8 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 	char			*next;
 	unsigned		i;
 
-	if (!(seen = kmalloc (DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC)))
+	seen = kmalloc(DBG_SCHED_LIMIT * sizeof *seen, GFP_ATOMIC);
+	if (!seen)
 		return 0;
 	seen_count = 0;
 
@@ -506,7 +507,8 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
 	/* dump a snapshot of the periodic schedule (and load) */
 	spin_lock_irqsave (&ohci->lock, flags);
 	for (i = 0; i < NUM_INTS; i++) {
-		if (!(ed = ohci->periodic [i]))
+		ed = ohci->periodic[i];
+		if (!ed)
 			continue;
 
 		temp = scnprintf (next, size, "%2d [%3d]:", i, ohci->load [i]);
diff --git a/kernel/drivers/usb/host/ohci-hcd.c b/kernel/drivers/usb/host/ohci-hcd.c
index 1dab9dfbc..760cb57e9 100644
--- a/kernel/drivers/usb/host/ohci-hcd.c
+++ b/kernel/drivers/usb/host/ohci-hcd.c
@@ -155,7 +155,8 @@ static int ohci_urb_enqueue (
 	int		retval = 0;
 
 	/* every endpoint has a ed, locate and maybe (re)initialize it */
-	if (! (ed = ed_get (ohci, urb->ep, urb->dev, pipe, urb->interval)))
+	ed = ed_get(ohci, urb->ep, urb->dev, pipe, urb->interval);
+	if (! ed)
 		return -ENOMEM;
 
 	/* for the private part of the URB we need the number of TDs (size) */
diff --git a/kernel/drivers/usb/host/ohci-nxp.c b/kernel/drivers/usb/host/ohci-nxp.c
index d9f0481d7..cfa94275c 100644
--- a/kernel/drivers/usb/host/ohci-nxp.c
+++ b/kernel/drivers/usb/host/ohci-nxp.c
@@ -203,7 +203,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
 		goto fail_disable;
 	}
 
-	ret = clk_enable(usb_pll_clk);
+	ret = clk_prepare_enable(usb_pll_clk);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to start USB PLL\n");
 		goto fail_disable;
@@ -223,7 +223,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
 		goto fail_rate;
 	}
 
-	ret = clk_enable(usb_dev_clk);
+	ret = clk_prepare_enable(usb_dev_clk);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
 		goto fail_rate;
@@ -239,7 +239,7 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
 
 	__raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
 
-	ret = clk_enable(usb_otg_clk);
+	ret = clk_prepare_enable(usb_otg_clk);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to start USB DEV Clock\n");
 		goto fail_otg;
@@ -283,11 +283,11 @@ static int ohci_hcd_nxp_probe(struct platform_device *pdev)
 fail_resource:
 	usb_put_hcd(hcd);
 fail_hcd:
-	clk_disable(usb_otg_clk);
+	clk_disable_unprepare(usb_otg_clk);
 fail_otg:
-	clk_disable(usb_dev_clk);
+	clk_disable_unprepare(usb_dev_clk);
 fail_rate:
-	clk_disable(usb_pll_clk);
+	clk_disable_unprepare(usb_pll_clk);
 fail_disable:
 	isp1301_i2c_client = NULL;
 	return ret;
@@ -300,9 +300,9 @@ static int ohci_hcd_nxp_remove(struct platform_device *pdev)
 	usb_remove_hcd(hcd);
 	ohci_nxp_stop_hc();
 	usb_put_hcd(hcd);
-	clk_disable(usb_pll_clk);
-	clk_disable(usb_dev_clk);
-	i2c_unregister_device(isp1301_i2c_client);
+	clk_disable_unprepare(usb_otg_clk);
+	clk_disable_unprepare(usb_dev_clk);
+	clk_disable_unprepare(usb_pll_clk);
 	isp1301_i2c_client = NULL;
 
 	return 0;
diff --git a/kernel/drivers/usb/host/ohci-platform.c b/kernel/drivers/usb/host/ohci-platform.c
index 185ceee52..c2669f185 100644
--- a/kernel/drivers/usb/host/ohci-platform.c
+++ b/kernel/drivers/usb/host/ohci-platform.c
@@ -57,15 +57,13 @@ static int ohci_platform_power_on(struct platform_device *dev)
 	}
 
 	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		if (priv->phys[phy_num]) {
-			ret = phy_init(priv->phys[phy_num]);
-			if (ret)
-				goto err_exit_phy;
-			ret = phy_power_on(priv->phys[phy_num]);
-			if (ret) {
-				phy_exit(priv->phys[phy_num]);
-				goto err_exit_phy;
-			}
+		ret = phy_init(priv->phys[phy_num]);
+		if (ret)
+			goto err_exit_phy;
+		ret = phy_power_on(priv->phys[phy_num]);
+		if (ret) {
+			phy_exit(priv->phys[phy_num]);
+			goto err_exit_phy;
 		}
 	}
 
@@ -73,10 +71,8 @@ static int ohci_platform_power_on(struct platform_device *dev)
 
 err_exit_phy:
 	while (--phy_num >= 0) {
-		if (priv->phys[phy_num]) {
-			phy_power_off(priv->phys[phy_num]);
-			phy_exit(priv->phys[phy_num]);
-		}
+		phy_power_off(priv->phys[phy_num]);
+		phy_exit(priv->phys[phy_num]);
 	}
 err_disable_clks:
 	while (--clk >= 0)
@@ -92,10 +88,8 @@ static void ohci_platform_power_off(struct platform_device *dev)
 	int clk, phy_num;
 
 	for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-		if (priv->phys[phy_num]) {
-			phy_power_off(priv->phys[phy_num]);
-			phy_exit(priv->phys[phy_num]);
-		}
+		phy_power_off(priv->phys[phy_num]);
+		phy_exit(priv->phys[phy_num]);
 	}
 
 	for (clk = OHCI_MAX_CLKS - 1; clk >= 0; clk--)
@@ -123,7 +117,6 @@ static int ohci_platform_probe(struct platform_device *dev)
 	struct usb_ohci_pdata *pdata = dev_get_platdata(&dev->dev);
 	struct ohci_platform_priv *priv;
 	struct ohci_hcd *ohci;
-	const char *phy_name;
 	int err, irq, phy_num, clk = 0;
 
 	if (usb_disabled())
@@ -174,36 +167,22 @@ static int ohci_platform_probe(struct platform_device *dev)
 
 		priv->num_phys = of_count_phandle_with_args(dev->dev.of_node,
 				"phys", "#phy-cells");
-		priv->num_phys = priv->num_phys > 0 ? priv->num_phys : 1;
 
-		priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
-				sizeof(struct phy *), GFP_KERNEL);
-		if (!priv->phys)
-			return -ENOMEM;
+		if (priv->num_phys > 0) {
+			priv->phys = devm_kcalloc(&dev->dev, priv->num_phys,
+					    sizeof(struct phy *), GFP_KERNEL);
+			if (!priv->phys)
+				return -ENOMEM;
+		} else
+			priv->num_phys = 0;
 
 		for (phy_num = 0; phy_num < priv->num_phys; phy_num++) {
-				err = of_property_read_string_index(
-						dev->dev.of_node,
-						"phy-names", phy_num,
-						&phy_name);
-
-				if (err < 0) {
-					if (priv->num_phys > 1) {
-						dev_err(&dev->dev, "phy-names not provided");
-						goto err_put_hcd;
-					} else
-						phy_name = "usb";
-				}
-
-				priv->phys[phy_num] = devm_phy_get(&dev->dev,
-						phy_name);
-				if (IS_ERR(priv->phys[phy_num])) {
-					err = PTR_ERR(priv->phys[phy_num]);
-					if ((priv->num_phys > 1) ||
-					    (err == -EPROBE_DEFER))
-						goto err_put_hcd;
-					priv->phys[phy_num] = NULL;
-				}
+			priv->phys[phy_num] = devm_of_phy_get_by_index(
+					&dev->dev, dev->dev.of_node, phy_num);
+			if (IS_ERR(priv->phys[phy_num])) {
+				err = PTR_ERR(priv->phys[phy_num]);
+				goto err_put_hcd;
+			}
 		}
 
 		for (clk = 0; clk < OHCI_MAX_CLKS; clk++) {
diff --git a/kernel/drivers/usb/host/ohci-q.c b/kernel/drivers/usb/host/ohci-q.c
index fe1d5fc7d..d029bbe9e 100644
--- a/kernel/drivers/usb/host/ohci-q.c
+++ b/kernel/drivers/usb/host/ohci-q.c
@@ -407,7 +407,8 @@ static struct ed *ed_get (
 
 	spin_lock_irqsave (&ohci->lock, flags);
 
-	if (!(ed = ep->hcpriv)) {
+	ed = ep->hcpriv;
+	if (!ed) {
 		struct td	*td;
 		int		is_out;
 		u32		info;
diff --git a/kernel/drivers/usb/host/ohci-spear.c b/kernel/drivers/usb/host/ohci-spear.c
index 707437c88..56478ed2f 100644
--- a/kernel/drivers/usb/host/ohci-spear.c
+++ b/kernel/drivers/usb/host/ohci-spear.c
@@ -161,6 +161,7 @@ static const struct of_device_id spear_ohci_id_table[] = {
 	{ .compatible = "st,spear600-ohci", },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, spear_ohci_id_table);
 
 /* Driver definition to register with the platform bus */
 static struct platform_driver spear_ohci_hcd_driver = {
diff --git a/kernel/drivers/usb/host/ohci-tmio.c b/kernel/drivers/usb/host/ohci-tmio.c
index e9a6eec39..cfcfadfc9 100644
--- a/kernel/drivers/usb/host/ohci-tmio.c
+++ b/kernel/drivers/usb/host/ohci-tmio.c
@@ -58,7 +58,7 @@
 #define CCR_PM_CKRNEN    0x0002
 #define CCR_PM_USBPW1    0x0004
 #define CCR_PM_USBPW2    0x0008
-#define CCR_PM_USBPW3    0x0008
+#define CCR_PM_USBPW3    0x0010
 #define CCR_PM_PMEE      0x0100
 #define CCR_PM_PMES      0x8000
 
diff --git a/kernel/drivers/usb/host/oxu210hp-hcd.c b/kernel/drivers/usb/host/oxu210hp-hcd.c
index 6352f54e6..1f139d82c 100644
--- a/kernel/drivers/usb/host/oxu210hp-hcd.c
+++ b/kernel/drivers/usb/host/oxu210hp-hcd.c
@@ -2670,7 +2670,6 @@ static int oxu_hcd_init(struct usb_hcd *hcd)
 static int oxu_reset(struct usb_hcd *hcd)
 {
 	struct oxu_hcd *oxu = hcd_to_oxu(hcd);
-	int ret;
 
 	spin_lock_init(&oxu->mem_lock);
 	INIT_LIST_HEAD(&oxu->urb_list);
@@ -2696,11 +2695,7 @@ static int oxu_reset(struct usb_hcd *hcd)
 	oxu->hcs_params = readl(&oxu->caps->hcs_params);
 	oxu->sbrn = 0x20;
 
-	ret = oxu_hcd_init(hcd);
-	if (ret)
-		return ret;
-
-	return 0;
+	return oxu_hcd_init(hcd);
 }
 
 static int oxu_run(struct usb_hcd *hcd)
@@ -2726,7 +2721,7 @@ static int oxu_run(struct usb_hcd *hcd)
 	 * streaming mappings for I/O buffers, like pci_map_single(),
 	 * can return segments above 4GB, if the device allows.
 	 *
-	 * NOTE:  the dma mask is visible through dma_supported(), so
+	 * NOTE:  the dma mask is visible through dev->dma_mask, so
 	 * drivers can pass this info along ... like NETIF_F_HIGHDMA,
 	 * Scsi_Host.highmem_io, and so forth.  It's readonly to all
 	 * host side drivers though.
diff --git a/kernel/drivers/usb/host/ssb-hcd.c b/kernel/drivers/usb/host/ssb-hcd.c
index ffc32f4b1..62b6b7804 100644
--- a/kernel/drivers/usb/host/ssb-hcd.c
+++ b/kernel/drivers/usb/host/ssb-hcd.c
@@ -105,7 +105,7 @@ static struct platform_device *ssb_hcd_create_pdev(struct ssb_device *dev, bool
 {
 	struct platform_device *hci_dev;
 	struct resource hci_res[2];
-	int ret = -ENOMEM;
+	int ret;
 
 	memset(hci_res, 0, sizeof(hci_res));
 
@@ -119,7 +119,7 @@ static struct platform_device *ssb_hcd_create_pdev(struct ssb_device *dev, bool
 	hci_dev = platform_device_alloc(ohci ? "ohci-platform" :
 					"ehci-platform" , 0);
 	if (!hci_dev)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	hci_dev->dev.parent = dev->dev;
 	hci_dev->dev.dma_mask = &hci_dev->dev.coherent_dma_mask;
@@ -166,7 +166,8 @@ static int ssb_hcd_probe(struct ssb_device *dev,
 	if (dma_set_mask_and_coherent(dev->dma_dev, DMA_BIT_MASK(32)))
 		return -EOPNOTSUPP;
 
-	usb_dev = kzalloc(sizeof(struct ssb_hcd_device), GFP_KERNEL);
+	usb_dev = devm_kzalloc(dev->dev, sizeof(struct ssb_hcd_device),
+			       GFP_KERNEL);
 	if (!usb_dev)
 		return -ENOMEM;
 
@@ -181,10 +182,8 @@ static int ssb_hcd_probe(struct ssb_device *dev,
 	start = ssb_admatch_base(tmp);
 	len = (coreid == SSB_DEV_USB20_HOST) ? 0x800 : ssb_admatch_size(tmp);
 	usb_dev->ohci_dev = ssb_hcd_create_pdev(dev, true, start, len);
-	if (IS_ERR(usb_dev->ohci_dev)) {
-		err = PTR_ERR(usb_dev->ohci_dev);
-		goto err_free_usb_dev;
-	}
+	if (IS_ERR(usb_dev->ohci_dev))
+		return PTR_ERR(usb_dev->ohci_dev);
 
 	if (coreid == SSB_DEV_USB20_HOST) {
 		start = ssb_admatch_base(tmp) + 0x800; /* ehci core offset */
@@ -200,8 +199,6 @@ static int ssb_hcd_probe(struct ssb_device *dev,
 
 err_unregister_ohci_dev:
 	platform_device_unregister(usb_dev->ohci_dev);
-err_free_usb_dev:
-	kfree(usb_dev);
 	return err;
 }
 
diff --git a/kernel/drivers/usb/host/u132-hcd.c b/kernel/drivers/usb/host/u132-hcd.c
index d51687780..692ccc693 100644
--- a/kernel/drivers/usb/host/u132-hcd.c
+++ b/kernel/drivers/usb/host/u132-hcd.c
@@ -1542,11 +1542,8 @@ static int u132_periodic_reinit(struct u132 *u132)
 		(fit ^ FIT) | u132->hc_fminterval);
 	if (retval)
 		return retval;
-	retval = u132_write_pcimem(u132, periodicstart,
-		((9 * fi) / 10) & 0x3fff);
-	if (retval)
-		return retval;
-	return 0;
+	return u132_write_pcimem(u132, periodicstart,
+	       ((9 * fi) / 10) & 0x3fff);
 }
 
 static char *hcfs2string(int state)
@@ -2247,9 +2244,8 @@ static int u132_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
 {
 	struct u132 *u132 = hcd_to_u132(hcd);
 	if (irqs_disabled()) {
-		if (__GFP_WAIT & mem_flags) {
-			printk(KERN_ERR "invalid context for function that migh"
-				"t sleep\n");
+		if (gfpflags_allow_blocking(mem_flags)) {
+			printk(KERN_ERR "invalid context for function that might sleep\n");
 			return -EINVAL;
 		}
 	}
@@ -2701,28 +2697,18 @@ static int u132_roothub_setportfeature(struct u132 *u132, u16 wValue,
 	if (wIndex == 0 || wIndex > u132->num_ports) {
 		return -EINVAL;
 	} else {
-		int retval;
 		int port_index = wIndex - 1;
 		struct u132_port *port = &u132->port[port_index];
 		port->Status &= ~(1 << wValue);
 		switch (wValue) {
 		case USB_PORT_FEAT_SUSPEND:
-			retval = u132_write_pcimem(u132,
-				roothub.portstatus[port_index], RH_PS_PSS);
-			if (retval)
-				return retval;
-			return 0;
+			return u132_write_pcimem(u132,
+			       roothub.portstatus[port_index], RH_PS_PSS);
 		case USB_PORT_FEAT_POWER:
-			retval = u132_write_pcimem(u132,
-				roothub.portstatus[port_index], RH_PS_PPS);
-			if (retval)
-				return retval;
-			return 0;
+			return u132_write_pcimem(u132,
+			       roothub.portstatus[port_index], RH_PS_PPS);
 		case USB_PORT_FEAT_RESET:
-			retval = u132_roothub_portreset(u132, port_index);
-			if (retval)
-				return retval;
-			return 0;
+			return u132_roothub_portreset(u132, port_index);
 		default:
 			return -EPIPE;
 		}
@@ -2737,7 +2723,6 @@ static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
 	} else {
 		int port_index = wIndex - 1;
 		u32 temp;
-		int retval;
 		struct u132_port *port = &u132->port[port_index];
 		port->Status &= ~(1 << wValue);
 		switch (wValue) {
@@ -2773,11 +2758,8 @@ static int u132_roothub_clearportfeature(struct u132 *u132, u16 wValue,
 		default:
 			return -EPIPE;
 		}
-		retval = u132_write_pcimem(u132, roothub.portstatus[port_index],
-			 temp);
-		if (retval)
-			return retval;
-		return 0;
+		return u132_write_pcimem(u132, roothub.portstatus[port_index],
+		       temp);
 	}
 }
 
diff --git a/kernel/drivers/usb/host/uhci-platform.c b/kernel/drivers/usb/host/uhci-platform.c
index 3a3e3eeba..32a6f3d8d 100644
--- a/kernel/drivers/usb/host/uhci-platform.c
+++ b/kernel/drivers/usb/host/uhci-platform.c
@@ -140,6 +140,7 @@ static const struct of_device_id platform_uhci_ids[] = {
 	{ .compatible = "platform-uhci", },
 	{}
 };
+MODULE_DEVICE_TABLE(of, platform_uhci_ids);
 
 static struct platform_driver uhci_platform_driver = {
 	.probe		= uhci_hcd_platform_probe,
diff --git a/kernel/drivers/usb/host/whci/init.c b/kernel/drivers/usb/host/whci/init.c
index d3e13b640..e36372393 100644
--- a/kernel/drivers/usb/host/whci/init.c
+++ b/kernel/drivers/usb/host/whci/init.c
@@ -175,8 +175,7 @@ void whc_clean_up(struct whc *whc)
 	pzl_clean_up(whc);
 	asl_clean_up(whc);
 
-	if (whc->qset_pool)
-		dma_pool_destroy(whc->qset_pool);
+	dma_pool_destroy(whc->qset_pool);
 
 	len   = resource_size(&whc->umc->resource);
 	if (whc->base)
diff --git a/kernel/drivers/usb/host/whci/qset.c b/kernel/drivers/usb/host/whci/qset.c
index dc31c425c..9f1c0538b 100644
--- a/kernel/drivers/usb/host/whci/qset.c
+++ b/kernel/drivers/usb/host/whci/qset.c
@@ -377,6 +377,10 @@ static int qset_fill_page_list(struct whc *whc, struct whc_std *std, gfp_t mem_f
 	if (std->pl_virt == NULL)
 		return -ENOMEM;
 	std->dma_addr = dma_map_single(whc->wusbhc.dev, std->pl_virt, pl_len, DMA_TO_DEVICE);
+	if (dma_mapping_error(whc->wusbhc.dev, std->dma_addr)) {
+		kfree(std->pl_virt);
+		return -EFAULT;
+	}
 
 	for (p = 0; p < std->num_pointers; p++) {
 		std->pl_virt[p].buf_ptr = cpu_to_le64(dma_addr);
diff --git a/kernel/drivers/usb/host/xhci-dbg.c b/kernel/drivers/usb/host/xhci-dbg.c
index 745717ec9..74c42f722 100644
--- a/kernel/drivers/usb/host/xhci-dbg.c
+++ b/kernel/drivers/usb/host/xhci-dbg.c
@@ -58,16 +58,17 @@ void xhci_dbg_regs(struct xhci_hcd *xhci)
 static void xhci_print_cap_regs(struct xhci_hcd *xhci)
 {
 	u32 temp;
+	u32 hci_version;
 
 	xhci_dbg(xhci, "xHCI capability registers at %p:\n", xhci->cap_regs);
 
 	temp = readl(&xhci->cap_regs->hc_capbase);
+	hci_version = HC_VERSION(temp);
 	xhci_dbg(xhci, "CAPLENGTH AND HCIVERSION 0x%x:\n",
 			(unsigned int) temp);
 	xhci_dbg(xhci, "CAPLENGTH: 0x%x\n",
 			(unsigned int) HC_LENGTH(temp));
-	xhci_dbg(xhci, "HCIVERSION: 0x%x\n",
-			(unsigned int) HC_VERSION(temp));
+	xhci_dbg(xhci, "HCIVERSION: 0x%x\n", hci_version);
 
 	temp = readl(&xhci->cap_regs->hcs_params1);
 	xhci_dbg(xhci, "HCSPARAMS 1: 0x%x\n",
@@ -99,11 +100,27 @@ static void xhci_print_cap_regs(struct xhci_hcd *xhci)
 	xhci_dbg(xhci, "HCC PARAMS 0x%x:\n", (unsigned int) temp);
 	xhci_dbg(xhci, "  HC generates %s bit addresses\n",
 			HCC_64BIT_ADDR(temp) ? "64" : "32");
+	xhci_dbg(xhci, "  HC %s Contiguous Frame ID Capability\n",
+			HCC_CFC(temp) ? "has" : "hasn't");
+	xhci_dbg(xhci, "  HC %s generate Stopped - Short Package event\n",
+			HCC_SPC(temp) ? "can" : "can't");
 	/* FIXME */
 	xhci_dbg(xhci, "  FIXME: more HCCPARAMS debugging\n");
 
 	temp = readl(&xhci->cap_regs->run_regs_off);
 	xhci_dbg(xhci, "RTSOFF 0x%x:\n", temp & RTSOFF_MASK);
+
+	/* xhci 1.1 controllers have the HCCPARAMS2 register */
+	if (hci_version > 100) {
+		temp = readl(&xhci->cap_regs->hcc_params2);
+		xhci_dbg(xhci, "HCC PARAMS2 0x%x:\n", (unsigned int) temp);
+		xhci_dbg(xhci, "  HC %s Force save context capability",
+			 HCC2_FSC(temp) ? "supports" : "doesn't support");
+		xhci_dbg(xhci, "  HC %s Large ESIT Payload Capability",
+			 HCC2_LEC(temp) ? "supports" : "doesn't support");
+		xhci_dbg(xhci, "  HC %s Extended TBC capability",
+			 HCC2_ETC(temp) ? "supports" : "doesn't support");
+	}
 }
 
 static void xhci_print_command_reg(struct xhci_hcd *xhci)
diff --git a/kernel/drivers/usb/host/xhci-hub.c b/kernel/drivers/usb/host/xhci-hub.c
index ee07ba41c..f980c239e 100644
--- a/kernel/drivers/usb/host/xhci-hub.c
+++ b/kernel/drivers/usb/host/xhci-hub.c
@@ -31,13 +31,15 @@
 #define	PORT_RWC_BITS	(PORT_CSC | PORT_PEC | PORT_WRC | PORT_OCC | \
 			 PORT_RC | PORT_PLC | PORT_PE)
 
-/* USB 3.0 BOS descriptor and a capability descriptor, combined */
+/* USB 3 BOS descriptor and a capability descriptors, combined.
+ * Fields will be adjusted and added later in xhci_create_usb3_bos_desc()
+ */
 static u8 usb_bos_descriptor [] = {
 	USB_DT_BOS_SIZE,		/*  __u8 bLength, 5 bytes */
 	USB_DT_BOS,			/*  __u8 bDescriptorType */
 	0x0F, 0x00,			/*  __le16 wTotalLength, 15 bytes */
 	0x1,				/*  __u8 bNumDeviceCaps */
-	/* First device capability */
+	/* First device capability, SuperSpeed */
 	USB_DT_USB_SS_CAP_SIZE,		/*  __u8 bLength, 10 bytes */
 	USB_DT_DEVICE_CAPABILITY,	/* Device Capability */
 	USB_SS_CAP_TYPE,		/* bDevCapabilityType, SUPERSPEED_USB */
@@ -46,9 +48,108 @@ static u8 usb_bos_descriptor [] = {
 	0x03,				/* bFunctionalitySupport,
 					   USB 3.0 speed only */
 	0x00,				/* bU1DevExitLat, set later. */
-	0x00, 0x00			/* __le16 bU2DevExitLat, set later. */
+	0x00, 0x00,			/* __le16 bU2DevExitLat, set later. */
+	/* Second device capability, SuperSpeedPlus */
+	0x0c,				/* bLength 12, will be adjusted later */
+	USB_DT_DEVICE_CAPABILITY,	/* Device Capability */
+	USB_SSP_CAP_TYPE,		/* bDevCapabilityType SUPERSPEED_PLUS */
+	0x00,				/* bReserved 0 */
+	0x00, 0x00, 0x00, 0x00,		/* bmAttributes, get from xhci psic */
+	0x00, 0x00,			/* wFunctionalitySupport */
+	0x00, 0x00,			/* wReserved 0 */
+	/* Sublink Speed Attributes are added in xhci_create_usb3_bos_desc() */
 };
 
+static int xhci_create_usb3_bos_desc(struct xhci_hcd *xhci, char *buf,
+				     u16 wLength)
+{
+	int i, ssa_count;
+	u32 temp;
+	u16 desc_size, ssp_cap_size, ssa_size = 0;
+	bool usb3_1 = false;
+
+	desc_size = USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
+	ssp_cap_size = sizeof(usb_bos_descriptor) - desc_size;
+
+	/* does xhci support USB 3.1 Enhanced SuperSpeed */
+	if (xhci->usb3_rhub.min_rev >= 0x01 && xhci->usb3_rhub.psi_uid_count) {
+		/* two SSA entries for each unique PSI ID, one RX and one TX */
+		ssa_count = xhci->usb3_rhub.psi_uid_count * 2;
+		ssa_size = ssa_count * sizeof(u32);
+		desc_size += ssp_cap_size;
+		usb3_1 = true;
+	}
+	memcpy(buf, &usb_bos_descriptor, min(desc_size, wLength));
+
+	if (usb3_1) {
+		/* modify bos descriptor bNumDeviceCaps and wTotalLength */
+		buf[4] += 1;
+		put_unaligned_le16(desc_size + ssa_size, &buf[2]);
+	}
+
+	if (wLength < USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE)
+		return wLength;
+
+	/* Indicate whether the host has LTM support. */
+	temp = readl(&xhci->cap_regs->hcc_params);
+	if (HCC_LTC(temp))
+		buf[8] |= USB_LTM_SUPPORT;
+
+	/* Set the U1 and U2 exit latencies. */
+	if ((xhci->quirks & XHCI_LPM_SUPPORT)) {
+		temp = readl(&xhci->cap_regs->hcs_params3);
+		buf[12] = HCS_U1_LATENCY(temp);
+		put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
+	}
+
+	if (usb3_1) {
+		u32 ssp_cap_base, bm_attrib, psi;
+		int offset;
+
+		ssp_cap_base = USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
+
+		if (wLength < desc_size)
+			return wLength;
+		buf[ssp_cap_base] = ssp_cap_size + ssa_size;
+
+		/* attribute count SSAC bits 4:0 and ID count SSIC bits 8:5 */
+		bm_attrib = (ssa_count - 1) & 0x1f;
+		bm_attrib |= (xhci->usb3_rhub.psi_uid_count - 1) << 5;
+		put_unaligned_le32(bm_attrib, &buf[ssp_cap_base + 4]);
+
+		if (wLength < desc_size + ssa_size)
+			return wLength;
+		/*
+		 * Create the Sublink Speed Attributes (SSA) array.
+		 * The xhci PSI field and USB 3.1 SSA fields are very similar,
+		 * but link type bits 7:6 differ for values 01b and 10b.
+		 * xhci has also only one PSI entry for a symmetric link when
+		 * USB 3.1 requires two SSA entries (RX and TX) for every link
+		 */
+		offset = desc_size;
+		for (i = 0; i < xhci->usb3_rhub.psi_count; i++) {
+			psi = xhci->usb3_rhub.psi[i];
+			psi &= ~USB_SSP_SUBLINK_SPEED_RSVD;
+			if ((psi & PLT_MASK) == PLT_SYM) {
+			/* Symmetric, create SSA RX and TX from one PSI entry */
+				put_unaligned_le32(psi, &buf[offset]);
+				psi |= 1 << 7;  /* turn entry to TX */
+				offset += 4;
+				if (offset >= desc_size + ssa_size)
+					return desc_size + ssa_size;
+			} else if ((psi & PLT_MASK) == PLT_ASYM_RX) {
+				/* Asymetric RX, flip bits 7:6 for SSA */
+				psi ^= PLT_MASK;
+			}
+			put_unaligned_le32(psi, &buf[offset]);
+			offset += 4;
+			if (offset >= desc_size + ssa_size)
+				return desc_size + ssa_size;
+		}
+	}
+	/* ssa_size is 0 for other than usb 3.1 hosts */
+	return desc_size + ssa_size;
+}
 
 static void xhci_common_hub_descriptor(struct xhci_hcd *xhci,
 		struct usb_hub_descriptor *desc, int ports)
@@ -161,7 +262,7 @@ static void xhci_hub_descriptor(struct usb_hcd *hcd, struct xhci_hcd *xhci,
 		struct usb_hub_descriptor *desc)
 {
 
-	if (hcd->speed == HCD_USB3)
+	if (hcd->speed >= HCD_USB3)
 		xhci_usb3_hub_descriptor(hcd, xhci, desc);
 	else
 		xhci_usb2_hub_descriptor(hcd, xhci, desc);
@@ -250,7 +351,7 @@ int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
 		if (!xhci->devs[i])
 			continue;
 		speed = xhci->devs[i]->udev->speed;
-		if (((speed == USB_SPEED_SUPER) == (hcd->speed == HCD_USB3))
+		if (((speed >= USB_SPEED_SUPER) == (hcd->speed >= HCD_USB3))
 				&& xhci->devs[i]->fake_port == port) {
 			slot_id = i;
 			break;
@@ -339,7 +440,7 @@ static void xhci_disable_port(struct usb_hcd *hcd, struct xhci_hcd *xhci,
 		u16 wIndex, __le32 __iomem *addr, u32 port_status)
 {
 	/* Don't allow the USB core to disable SuperSpeed ports. */
-	if (hcd->speed == HCD_USB3) {
+	if (hcd->speed >= HCD_USB3) {
 		xhci_dbg(xhci, "Ignoring request to disable "
 				"SuperSpeed port.\n");
 		return;
@@ -407,7 +508,7 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array)
 	int max_ports;
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 
-	if (hcd->speed == HCD_USB3) {
+	if (hcd->speed >= HCD_USB3) {
 		max_ports = xhci->num_usb3_ports;
 		*port_array = xhci->usb3_ports;
 	} else {
@@ -558,6 +659,22 @@ static void xhci_del_comp_mod_timer(struct xhci_hcd *xhci, u32 status,
 	}
 }
 
+static u32 xhci_get_ext_port_status(u32 raw_port_status, u32 port_li)
+{
+	u32 ext_stat = 0;
+	int speed_id;
+
+	/* only support rx and tx lane counts of 1 in usb3.1 spec */
+	speed_id = DEV_PORT_SPEED(raw_port_status);
+	ext_stat |= speed_id;		/* bits 3:0, RX speed id */
+	ext_stat |= speed_id << 4;	/* bits 7:4, TX speed id */
+
+	ext_stat |= PORT_RX_LANES(port_li) << 8;  /* bits 11:8 Rx lane count */
+	ext_stat |= PORT_TX_LANES(port_li) << 12; /* bits 15:12 Tx lane count */
+
+	return ext_stat;
+}
+
 /*
  * Converts a raw xHCI port status into the format that external USB 2.0 or USB
  * 3.0 hubs use.
@@ -590,7 +707,7 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
 	if ((raw_port_status & PORT_RC))
 		status |= USB_PORT_STAT_C_RESET << 16;
 	/* USB3.0 only */
-	if (hcd->speed == HCD_USB3) {
+	if (hcd->speed >= HCD_USB3) {
 		/* Port link change with port in resume state should not be
 		 * reported to usbcore, as this is an internal state to be
 		 * handled by xhci driver. Reporting PLC to usbcore may
@@ -606,18 +723,40 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
 			status |= USB_PORT_STAT_C_CONFIG_ERROR << 16;
 	}
 
-	if (hcd->speed != HCD_USB3) {
+	if (hcd->speed < HCD_USB3) {
 		if ((raw_port_status & PORT_PLS_MASK) == XDEV_U3
 				&& (raw_port_status & PORT_POWER))
 			status |= USB_PORT_STAT_SUSPEND;
 	}
 	if ((raw_port_status & PORT_PLS_MASK) == XDEV_RESUME &&
-			!DEV_SUPERSPEED(raw_port_status)) {
+		!DEV_SUPERSPEED_ANY(raw_port_status)) {
 		if ((raw_port_status & PORT_RESET) ||
 				!(raw_port_status & PORT_PE))
 			return 0xffffffff;
-		if (time_after_eq(jiffies,
-					bus_state->resume_done[wIndex])) {
+		/* did port event handler already start resume timing? */
+		if (!bus_state->resume_done[wIndex]) {
+			/* If not, maybe we are in a host initated resume? */
+			if (test_bit(wIndex, &bus_state->resuming_ports)) {
+				/* Host initated resume doesn't time the resume
+				 * signalling using resume_done[].
+				 * It manually sets RESUME state, sleeps 20ms
+				 * and sets U0 state. This should probably be
+				 * changed, but not right now.
+				 */
+			} else {
+				/* port resume was discovered now and here,
+				 * start resume timing
+				 */
+				unsigned long timeout = jiffies +
+					msecs_to_jiffies(USB_RESUME_TIMEOUT);
+
+				set_bit(wIndex, &bus_state->resuming_ports);
+				bus_state->resume_done[wIndex] = timeout;
+				mod_timer(&hcd->rh_timer, timeout);
+			}
+		/* Has resume been signalled for USB_RESUME_TIME yet? */
+		} else if (time_after_eq(jiffies,
+					 bus_state->resume_done[wIndex])) {
 			int time_left;
 
 			xhci_dbg(xhci, "Resume USB2 port %d\n",
@@ -658,19 +797,35 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
 		} else {
 			/*
 			 * The resume has been signaling for less than
-			 * 20ms. Report the port status as SUSPEND,
-			 * let the usbcore check port status again
-			 * and clear resume signaling later.
+			 * USB_RESUME_TIME. Report the port status as SUSPEND,
+			 * let the usbcore check port status again and clear
+			 * resume signaling later.
 			 */
 			status |= USB_PORT_STAT_SUSPEND;
 		}
 	}
-	if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0
-			&& (raw_port_status & PORT_POWER)
-			&& (bus_state->suspended_ports & (1 << wIndex))) {
-		bus_state->suspended_ports &= ~(1 << wIndex);
-		if (hcd->speed != HCD_USB3)
-			bus_state->port_c_suspend |= 1 << wIndex;
+	/*
+	 * Clear stale usb2 resume signalling variables in case port changed
+	 * state during resume signalling. For example on error
+	 */
+	if ((bus_state->resume_done[wIndex] ||
+	     test_bit(wIndex, &bus_state->resuming_ports)) &&
+	    (raw_port_status & PORT_PLS_MASK) != XDEV_U3 &&
+	    (raw_port_status & PORT_PLS_MASK) != XDEV_RESUME) {
+		bus_state->resume_done[wIndex] = 0;
+		clear_bit(wIndex, &bus_state->resuming_ports);
+	}
+
+
+	if ((raw_port_status & PORT_PLS_MASK) == XDEV_U0 &&
+	    (raw_port_status & PORT_POWER)) {
+		if (bus_state->suspended_ports & (1 << wIndex)) {
+			bus_state->suspended_ports &= ~(1 << wIndex);
+			if (hcd->speed < HCD_USB3)
+				bus_state->port_c_suspend |= 1 << wIndex;
+		}
+		bus_state->resume_done[wIndex] = 0;
+		clear_bit(wIndex, &bus_state->resuming_ports);
 	}
 	if (raw_port_status & PORT_CONNECT) {
 		status |= USB_PORT_STAT_CONNECTION;
@@ -683,13 +838,13 @@ static u32 xhci_get_port_status(struct usb_hcd *hcd,
 	if (raw_port_status & PORT_RESET)
 		status |= USB_PORT_STAT_RESET;
 	if (raw_port_status & PORT_POWER) {
-		if (hcd->speed == HCD_USB3)
+		if (hcd->speed >= HCD_USB3)
 			status |= USB_SS_PORT_STAT_POWER;
 		else
 			status |= USB_PORT_STAT_POWER;
 	}
 	/* Update Port Link State */
-	if (hcd->speed == HCD_USB3) {
+	if (hcd->speed >= HCD_USB3) {
 		xhci_hub_report_usb3_link_state(xhci, &status, raw_port_status);
 		/*
 		 * Verify if all USB3 Ports Have entered U0 already.
@@ -734,7 +889,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		 * descriptor for the USB 3.0 roothub.  If not, we stall the
 		 * endpoint, like external hubs do.
 		 */
-		if (hcd->speed == HCD_USB3 &&
+		if (hcd->speed >= HCD_USB3 &&
 				(wLength < USB_DT_SS_HUB_SIZE ||
 				 wValue != (USB_DT_SS_HUB << 8))) {
 			xhci_dbg(xhci, "Wrong hub descriptor type for "
@@ -748,25 +903,12 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		if ((wValue & 0xff00) != (USB_DT_BOS << 8))
 			goto error;
 
-		if (hcd->speed != HCD_USB3)
+		if (hcd->speed < HCD_USB3)
 			goto error;
 
-		/* Set the U1 and U2 exit latencies. */
-		memcpy(buf, &usb_bos_descriptor,
-				USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE);
-		if ((xhci->quirks & XHCI_LPM_SUPPORT)) {
-			temp = readl(&xhci->cap_regs->hcs_params3);
-			buf[12] = HCS_U1_LATENCY(temp);
-			put_unaligned_le16(HCS_U2_LATENCY(temp), &buf[13]);
-		}
-
-		/* Indicate whether the host has LTM support. */
-		temp = readl(&xhci->cap_regs->hcc_params);
-		if (HCC_LTC(temp))
-			buf[8] |= USB_LTM_SUPPORT;
-
+		retval = xhci_create_usb3_bos_desc(xhci, buf, wLength);
 		spin_unlock_irqrestore(&xhci->lock, flags);
-		return USB_DT_BOS_SIZE + USB_DT_USB_SS_CAP_SIZE;
+		return retval;
 	case GetPortStatus:
 		if (!wIndex || wIndex > max_ports)
 			goto error;
@@ -786,6 +928,19 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 		xhci_dbg(xhci, "Get port status returned 0x%x\n", status);
 
 		put_unaligned(cpu_to_le32(status), (__le32 *) buf);
+		/* if USB 3.1 extended port status return additional 4 bytes */
+		if (wValue == 0x02) {
+			u32 port_li;
+
+			if (hcd->speed < HCD_USB31 || wLength != 8) {
+				xhci_err(xhci, "get ext port status invalid parameter\n");
+				retval = -EINVAL;
+				break;
+			}
+			port_li = readl(port_array[wIndex] + PORTLI);
+			status = xhci_get_ext_port_status(temp, port_li);
+			put_unaligned_le32(cpu_to_le32(status), &buf[4]);
+		}
 		break;
 	case SetPortFeature:
 		if (wValue == USB_PORT_FEAT_LINK_STATE)
@@ -952,7 +1107,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 			temp = readl(port_array[wIndex]);
 			break;
 		case USB_PORT_FEAT_U1_TIMEOUT:
-			if (hcd->speed != HCD_USB3)
+			if (hcd->speed < HCD_USB3)
 				goto error;
 			temp = readl(port_array[wIndex] + PORTPMSC);
 			temp &= ~PORT_U1_TIMEOUT_MASK;
@@ -960,7 +1115,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 			writel(temp, port_array[wIndex] + PORTPMSC);
 			break;
 		case USB_PORT_FEAT_U2_TIMEOUT:
-			if (hcd->speed != HCD_USB3)
+			if (hcd->speed < HCD_USB3)
 				goto error;
 			temp = readl(port_array[wIndex] + PORTPMSC);
 			temp &= ~PORT_U2_TIMEOUT_MASK;
@@ -995,6 +1150,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 				if ((temp & PORT_PE) == 0)
 					goto error;
 
+				set_bit(wIndex, &bus_state->resuming_ports);
 				xhci_set_link_state(xhci, port_array, wIndex,
 							XDEV_RESUME);
 				spin_unlock_irqrestore(&xhci->lock, flags);
@@ -1002,6 +1158,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 				spin_lock_irqsave(&xhci->lock, flags);
 				xhci_set_link_state(xhci, port_array, wIndex,
 							XDEV_U0);
+				clear_bit(wIndex, &bus_state->resuming_ports);
 			}
 			bus_state->port_c_suspend |= 1 << wIndex;
 
@@ -1194,6 +1351,10 @@ int xhci_bus_resume(struct usb_hcd *hcd)
 	struct xhci_bus_state *bus_state;
 	u32 temp;
 	unsigned long flags;
+	unsigned long port_was_suspended = 0;
+	bool need_usb2_u3_exit = false;
+	int slot_id;
+	int sret;
 
 	max_ports = xhci_get_ports(hcd, &port_array);
 	bus_state = &xhci->bus_state[hcd_index(hcd)];
@@ -1217,48 +1378,55 @@ int xhci_bus_resume(struct usb_hcd *hcd)
 		/* Check whether need resume ports. If needed
 		   resume port and disable remote wakeup */
 		u32 temp;
-		int slot_id;
 
 		temp = readl(port_array[port_index]);
-		if (DEV_SUPERSPEED(temp))
+		if (DEV_SUPERSPEED_ANY(temp))
 			temp &= ~(PORT_RWC_BITS | PORT_CEC | PORT_WAKE_BITS);
 		else
 			temp &= ~(PORT_RWC_BITS | PORT_WAKE_BITS);
 		if (test_bit(port_index, &bus_state->bus_suspended) &&
 		    (temp & PORT_PLS_MASK)) {
-			if (DEV_SUPERSPEED(temp)) {
-				xhci_set_link_state(xhci, port_array,
-							port_index, XDEV_U0);
-			} else {
+			set_bit(port_index, &port_was_suspended);
+			if (!DEV_SUPERSPEED_ANY(temp)) {
 				xhci_set_link_state(xhci, port_array,
 						port_index, XDEV_RESUME);
-
-				spin_unlock_irqrestore(&xhci->lock, flags);
-				msleep(20);
-				spin_lock_irqsave(&xhci->lock, flags);
-
-				xhci_set_link_state(xhci, port_array,
-							port_index, XDEV_U0);
+				need_usb2_u3_exit = true;
 			}
-			/* wait for the port to enter U0 and report port link
-			 * state change.
-			 */
-			spin_unlock_irqrestore(&xhci->lock, flags);
-			msleep(20);
-			spin_lock_irqsave(&xhci->lock, flags);
-
-			/* Clear PLC */
-			xhci_test_and_clear_bit(xhci, port_array, port_index,
-						PORT_PLC);
-
-			slot_id = xhci_find_slot_id_by_port(hcd,
-					xhci, port_index + 1);
-			if (slot_id)
-				xhci_ring_device(xhci, slot_id);
 		} else
 			writel(temp, port_array[port_index]);
 	}
 
+	if (need_usb2_u3_exit) {
+		spin_unlock_irqrestore(&xhci->lock, flags);
+		msleep(20);
+		spin_lock_irqsave(&xhci->lock, flags);
+	}
+
+	port_index = max_ports;
+	while (port_index--) {
+		if (!(port_was_suspended & BIT(port_index)))
+			continue;
+		/* Clear PLC to poll it later after XDEV_U0 */
+		xhci_test_and_clear_bit(xhci, port_array, port_index, PORT_PLC);
+		xhci_set_link_state(xhci, port_array, port_index, XDEV_U0);
+	}
+
+	port_index = max_ports;
+	while (port_index--) {
+		if (!(port_was_suspended & BIT(port_index)))
+			continue;
+		/* Poll and Clear PLC */
+		sret = xhci_handshake(port_array[port_index], PORT_PLC,
+				      PORT_PLC, 10 * 1000);
+		if (sret)
+			xhci_warn(xhci, "port %d resume PLC timeout\n",
+				  port_index);
+		xhci_test_and_clear_bit(xhci, port_array, port_index, PORT_PLC);
+		slot_id = xhci_find_slot_id_by_port(hcd, xhci, port_index + 1);
+		if (slot_id)
+			xhci_ring_device(xhci, slot_id);
+	}
+
 	(void) readl(&xhci->op_regs->command);
 
 	bus_state->next_statechange = jiffies + msecs_to_jiffies(5);
diff --git a/kernel/drivers/usb/host/xhci-mem.c b/kernel/drivers/usb/host/xhci-mem.c
index 9a8c936cd..c48cbe731 100644
--- a/kernel/drivers/usb/host/xhci-mem.c
+++ b/kernel/drivers/usb/host/xhci-mem.c
@@ -1498,10 +1498,10 @@ int xhci_endpoint_init(struct xhci_hcd *xhci,
 	 * use Event Data TRBs, and we don't chain in a link TRB on short
 	 * transfers, we're basically dividing by 1.
 	 *
-	 * xHCI 1.0 specification indicates that the Average TRB Length should
-	 * be set to 8 for control endpoints.
+	 * xHCI 1.0 and 1.1 specification indicates that the Average TRB Length
+	 * should be set to 8 for control endpoints.
 	 */
-	if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version == 0x100)
+	if (usb_endpoint_xfer_control(&ep->desc) && xhci->hci_version >= 0x100)
 		ep_ctx->tx_info |= cpu_to_le32(AVG_TRB_LENGTH_FOR_EP(8));
 	else
 		ep_ctx->tx_info |=
@@ -1792,8 +1792,7 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 	int size;
 	int i, j, num_ports;
 
-	if (timer_pending(&xhci->cmd_timer))
-		del_timer_sync(&xhci->cmd_timer);
+	del_timer_sync(&xhci->cmd_timer);
 
 	/* Free the Event Ring Segment Table and the actual Event Ring */
 	size = sizeof(struct xhci_erst_entry)*(xhci->erst.num_entries);
@@ -1829,24 +1828,20 @@ void xhci_mem_cleanup(struct xhci_hcd *xhci)
 	for (i = 1; i < MAX_HC_SLOTS; ++i)
 		xhci_free_virt_device(xhci, i);
 
-	if (xhci->segment_pool)
-		dma_pool_destroy(xhci->segment_pool);
+	dma_pool_destroy(xhci->segment_pool);
 	xhci->segment_pool = NULL;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed segment pool");
 
-	if (xhci->device_pool)
-		dma_pool_destroy(xhci->device_pool);
+	dma_pool_destroy(xhci->device_pool);
 	xhci->device_pool = NULL;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Freed device context pool");
 
-	if (xhci->small_streams_pool)
-		dma_pool_destroy(xhci->small_streams_pool);
+	dma_pool_destroy(xhci->small_streams_pool);
 	xhci->small_streams_pool = NULL;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"Freed small stream array pool");
 
-	if (xhci->medium_streams_pool)
-		dma_pool_destroy(xhci->medium_streams_pool);
+	dma_pool_destroy(xhci->medium_streams_pool);
 	xhci->medium_streams_pool = NULL;
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"Freed medium stream array pool");
@@ -2073,14 +2068,23 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
 {
 	u32 temp, port_offset, port_count;
 	int i;
+	struct xhci_hub *rhub;
 
-	if (major_revision > 0x03) {
+	temp = readl(addr);
+
+	if (XHCI_EXT_PORT_MAJOR(temp) == 0x03) {
+		rhub = &xhci->usb3_rhub;
+	} else if (XHCI_EXT_PORT_MAJOR(temp) <= 0x02) {
+		rhub = &xhci->usb2_rhub;
+	} else {
 		xhci_warn(xhci, "Ignoring unknown port speed, "
 				"Ext Cap %p, revision = 0x%x\n",
 				addr, major_revision);
 		/* Ignoring port protocol we can't understand. FIXME */
 		return;
 	}
+	rhub->maj_rev = XHCI_EXT_PORT_MAJOR(temp);
+	rhub->min_rev = XHCI_EXT_PORT_MINOR(temp);
 
 	/* Port offset and count in the third dword, see section 7.2 */
 	temp = readl(addr + 2);
@@ -2095,6 +2099,33 @@ static void xhci_add_in_port(struct xhci_hcd *xhci, unsigned int num_ports,
 		/* WTF? "Valid values are ‘1’ to MaxPorts" */
 		return;
 
+	rhub->psi_count = XHCI_EXT_PORT_PSIC(temp);
+	if (rhub->psi_count) {
+		rhub->psi = kcalloc(rhub->psi_count, sizeof(*rhub->psi),
+				    GFP_KERNEL);
+		if (!rhub->psi)
+			rhub->psi_count = 0;
+
+		rhub->psi_uid_count++;
+		for (i = 0; i < rhub->psi_count; i++) {
+			rhub->psi[i] = readl(addr + 4 + i);
+
+			/* count unique ID values, two consecutive entries can
+			 * have the same ID if link is assymetric
+			 */
+			if (i && (XHCI_EXT_PORT_PSIV(rhub->psi[i]) !=
+				  XHCI_EXT_PORT_PSIV(rhub->psi[i - 1])))
+				rhub->psi_uid_count++;
+
+			xhci_dbg(xhci, "PSIV:%d PSIE:%d PLT:%d PFD:%d LP:%d PSIM:%d\n",
+				  XHCI_EXT_PORT_PSIV(rhub->psi[i]),
+				  XHCI_EXT_PORT_PSIE(rhub->psi[i]),
+				  XHCI_EXT_PORT_PLT(rhub->psi[i]),
+				  XHCI_EXT_PORT_PFD(rhub->psi[i]),
+				  XHCI_EXT_PORT_LP(rhub->psi[i]),
+				  XHCI_EXT_PORT_PSIM(rhub->psi[i]));
+		}
+	}
 	/* cache usb2 port capabilities */
 	if (major_revision < 0x03 && xhci->num_ext_caps < max_caps)
 		xhci->ext_caps[xhci->num_ext_caps++] = temp;
@@ -2321,6 +2352,10 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 
 	INIT_LIST_HEAD(&xhci->cmd_list);
 
+	/* init command timeout timer */
+	setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
+		    (unsigned long)xhci);
+
 	page_size = readl(&xhci->op_regs->page_size);
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"Supported page size register = 0x%x", page_size);
@@ -2505,10 +2540,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags)
 			"Wrote ERST address to ir_set 0.");
 	xhci_print_ir_set(xhci, 0);
 
-	/* init command timeout timer */
-	setup_timer(&xhci->cmd_timer, xhci_handle_command_timeout,
-		    (unsigned long)xhci);
-
 	/*
 	 * XXX: Might need to set the Interrupter Moderation Register to
 	 * something other than the default (~1ms minimum between interrupts).
diff --git a/kernel/drivers/usb/host/xhci-pci.c b/kernel/drivers/usb/host/xhci-pci.c
index 2af32e26f..c2d65206e 100644
--- a/kernel/drivers/usb/host/xhci-pci.c
+++ b/kernel/drivers/usb/host/xhci-pci.c
@@ -23,10 +23,17 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <linux/acpi.h>
 
 #include "xhci.h"
 #include "xhci-trace.h"
 
+#define SSIC_PORT_NUM		2
+#define SSIC_PORT_CFG2		0x880c
+#define SSIC_PORT_CFG2_OFFSET	0x30
+#define PROG_DONE		(1 << 30)
+#define SSIC_PORT_UNUSED	(1 << 31)
+
 /* Device for a quirk */
 #define PCI_VENDOR_ID_FRESCO_LOGIC	0x1b73
 #define PCI_DEVICE_ID_FRESCO_LOGIC_PDK	0x1000
@@ -40,11 +47,19 @@
 #define PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI		0x22b5
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI		0xa12f
 #define PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI	0x9d2f
+#define PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI		0x0aa8
 
 static const char hcd_name[] = "xhci_hcd";
 
 static struct hc_driver __read_mostly xhci_pci_hc_driver;
 
+static int xhci_pci_setup(struct usb_hcd *hcd);
+
+static const struct xhci_driver_overrides xhci_pci_overrides __initconst = {
+	.extra_priv_size = sizeof(struct xhci_hcd),
+	.reset = xhci_pci_setup,
+};
+
 /* called after powerup, by probe or system-pm "wakeup" */
 static int xhci_pci_reinit(struct xhci_hcd *xhci, struct pci_dev *pdev)
 {
@@ -135,11 +150,13 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 		pdev->device == PCI_DEVICE_ID_INTEL_LYNXPOINT_LP_XHCI) {
 		xhci->quirks |= XHCI_SPURIOUS_REBOOT;
+		xhci->quirks |= XHCI_SPURIOUS_WAKEUP;
 	}
 	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
 		(pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_LP_XHCI ||
 		 pdev->device == PCI_DEVICE_ID_INTEL_SUNRISEPOINT_H_XHCI ||
-		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI)) {
+		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI ||
+		 pdev->device == PCI_DEVICE_ID_INTEL_BROXTON_M_XHCI)) {
 		xhci->quirks |= XHCI_PME_STUCK_QUIRK;
 	}
 	if (pdev->vendor == PCI_VENDOR_ID_ETRON &&
@@ -168,20 +185,22 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci)
 				"QUIRK: Resetting on resume");
 }
 
-/*
- * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
- * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
- */
-static void xhci_pme_quirk(struct xhci_hcd *xhci)
+#ifdef CONFIG_ACPI
+static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev)
 {
-	u32 val;
-	void __iomem *reg;
-
-	reg = (void __iomem *) xhci->cap_regs + 0x80a4;
-	val = readl(reg);
-	writel(val | BIT(28), reg);
-	readl(reg);
+	static const u8 intel_dsm_uuid[] = {
+		0xb7, 0x0c, 0x34, 0xac,	0x01, 0xe9, 0xbf, 0x45,
+		0xb7, 0xe6, 0x2b, 0x34, 0xec, 0x93, 0x1e, 0x23,
+	};
+	union acpi_object *obj;
+
+	obj = acpi_evaluate_dsm(ACPI_HANDLE(&dev->dev), intel_dsm_uuid, 3, 1,
+				NULL);
+	ACPI_FREE(obj);
 }
+#else
+static void xhci_pme_acpi_rtd3_enable(struct pci_dev *dev) { }
+#endif /* CONFIG_ACPI */
 
 /* called during probe() after chip reset completes */
 static int xhci_pci_setup(struct usb_hcd *hcd)
@@ -190,15 +209,17 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
 	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
 	int			retval;
 
+	xhci = hcd_to_xhci(hcd);
+	if (!xhci->sbrn)
+		pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
+
 	retval = xhci_gen_setup(hcd, xhci_pci_quirks);
 	if (retval)
 		return retval;
 
-	xhci = hcd_to_xhci(hcd);
 	if (!usb_hcd_is_primary_hcd(hcd))
 		return 0;
 
-	pci_read_config_byte(pdev, XHCI_SBRN_OFFSET, &xhci->sbrn);
 	xhci_dbg(xhci, "Got SBRN %u\n", (unsigned int) xhci->sbrn);
 
 	/* Find any debug ports */
@@ -206,7 +227,6 @@ static int xhci_pci_setup(struct usb_hcd *hcd)
 	if (!retval)
 		return retval;
 
-	kfree(xhci);
 	return retval;
 }
 
@@ -247,11 +267,6 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 		goto dealloc_usb2_hcd;
 	}
 
-	/* Set the xHCI pointer before xhci_pci_setup() (aka hcd_driver.reset)
-	 * is called by usb_add_hcd().
-	 */
-	*((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
-
 	retval = usb_add_hcd(xhci->shared_hcd, dev->irq,
 			IRQF_SHARED);
 	if (retval)
@@ -262,6 +277,9 @@ static int xhci_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
 			HCC_MAX_PSA(xhci->hcc_params) >= 4)
 		xhci->shared_hcd->can_do_streams = 1;
 
+	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
+		xhci_pme_acpi_rtd3_enable(dev);
+
 	/* USB-2 and USB-3 roothubs initialized, allow runtime pm suspend */
 	pm_runtime_put_noidle(&dev->dev);
 
@@ -290,11 +308,62 @@ static void xhci_pci_remove(struct pci_dev *dev)
 	/* Workaround for spurious wakeups at shutdown with HSW */
 	if (xhci->quirks & XHCI_SPURIOUS_WAKEUP)
 		pci_set_power_state(dev, PCI_D3hot);
-
-	kfree(xhci);
 }
 
 #ifdef CONFIG_PM
+/*
+ * In some Intel xHCI controllers, in order to get D3 working,
+ * through a vendor specific SSIC CONFIG register at offset 0x883c,
+ * SSIC PORT need to be marked as "unused" before putting xHCI
+ * into D3. After D3 exit, the SSIC port need to be marked as "used".
+ * Without this change, xHCI might not enter D3 state.
+ * Make sure PME works on some Intel xHCI controllers by writing 1 to clear
+ * the Internal PME flag bit in vendor specific PMCTRL register at offset 0x80a4
+ */
+static void xhci_pme_quirk(struct usb_hcd *hcd, bool suspend)
+{
+	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
+	struct pci_dev		*pdev = to_pci_dev(hcd->self.controller);
+	u32 val;
+	void __iomem *reg;
+	int i;
+
+	if (pdev->vendor == PCI_VENDOR_ID_INTEL &&
+		 pdev->device == PCI_DEVICE_ID_INTEL_CHERRYVIEW_XHCI) {
+
+		for (i = 0; i < SSIC_PORT_NUM; i++) {
+			reg = (void __iomem *) xhci->cap_regs +
+					SSIC_PORT_CFG2 +
+					i * SSIC_PORT_CFG2_OFFSET;
+
+			/*
+			 * Notify SSIC that SSIC profile programming
+			 * is not done.
+			 */
+			val = readl(reg) & ~PROG_DONE;
+			writel(val, reg);
+
+			/* Mark SSIC port as unused(suspend) or used(resume) */
+			val = readl(reg);
+			if (suspend)
+				val |= SSIC_PORT_UNUSED;
+			else
+				val &= ~SSIC_PORT_UNUSED;
+			writel(val, reg);
+
+			/* Notify SSIC that SSIC profile programming is done */
+			val = readl(reg) | PROG_DONE;
+			writel(val, reg);
+			readl(reg);
+		}
+	}
+
+	reg = (void __iomem *) xhci->cap_regs + 0x80a4;
+	val = readl(reg);
+	writel(val | BIT(28), reg);
+	readl(reg);
+}
+
 static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 {
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
@@ -308,7 +377,7 @@ static int xhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 		pdev->no_d3cold = true;
 
 	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
-		xhci_pme_quirk(xhci);
+		xhci_pme_quirk(hcd, true);
 
 	return xhci_suspend(xhci, do_wakeup);
 }
@@ -341,7 +410,7 @@ static int xhci_pci_resume(struct usb_hcd *hcd, bool hibernated)
 		usb_enable_intel_xhci_ports(pdev);
 
 	if (xhci->quirks & XHCI_PME_STUCK_QUIRK)
-		xhci_pme_quirk(xhci);
+		xhci_pme_quirk(hcd, false);
 
 	retval = xhci_resume(xhci, hibernated);
 	return retval;
@@ -379,7 +448,7 @@ static struct pci_driver xhci_pci_driver = {
 
 static int __init xhci_pci_init(void)
 {
-	xhci_init_driver(&xhci_pci_hc_driver, xhci_pci_setup);
+	xhci_init_driver(&xhci_pci_hc_driver, &xhci_pci_overrides);
 #ifdef CONFIG_PM
 	xhci_pci_hc_driver.pci_suspend = xhci_pci_suspend;
 	xhci_pci_hc_driver.pci_resume = xhci_pci_resume;
diff --git a/kernel/drivers/usb/host/xhci-plat.c b/kernel/drivers/usb/host/xhci-plat.c
index 783e81913..05647e675 100644
--- a/kernel/drivers/usb/host/xhci-plat.c
+++ b/kernel/drivers/usb/host/xhci-plat.c
@@ -19,6 +19,7 @@
 #include <linux/usb/phy.h>
 #include <linux/slab.h>
 #include <linux/usb/xhci_pdriver.h>
+#include <linux/acpi.h>
 
 #include "xhci.h"
 #include "xhci-mvebu.h"
@@ -26,6 +27,15 @@
 
 static struct hc_driver __read_mostly xhci_plat_hc_driver;
 
+static int xhci_plat_setup(struct usb_hcd *hcd);
+static int xhci_plat_start(struct usb_hcd *hcd);
+
+static const struct xhci_driver_overrides xhci_plat_overrides __initconst = {
+	.extra_priv_size = sizeof(struct xhci_hcd),
+	.reset = xhci_plat_setup,
+	.start = xhci_plat_start,
+};
+
 static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci)
 {
 	/*
@@ -84,14 +94,20 @@ static int xhci_plat_probe(struct platform_device *pdev)
 	if (irq < 0)
 		return -ENODEV;
 
-	/* Initialize dma_mask and coherent_dma_mask to 32-bits */
-	ret = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32));
-	if (ret)
-		return ret;
-	if (!pdev->dev.dma_mask)
-		pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+	/* Try to set 64-bit DMA first */
+	if (WARN_ON(!pdev->dev.dma_mask))
+		/* Platform did not initialize dma_mask */
+		ret = dma_coerce_mask_and_coherent(&pdev->dev,
+						   DMA_BIT_MASK(64));
 	else
-		dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+		ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
+
+	/* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */
+	if (ret) {
+		ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+		if (ret)
+			return ret;
+	}
 
 	hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
 	if (!hcd)
@@ -127,31 +143,21 @@ static int xhci_plat_probe(struct platform_device *pdev)
 			goto disable_clk;
 	}
 
-	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
-	if (ret)
-		goto disable_clk;
-
 	device_wakeup_enable(hcd->self.controller);
 
-	/* USB 2.0 roothub is stored in the platform_device now. */
-	hcd = platform_get_drvdata(pdev);
 	xhci = hcd_to_xhci(hcd);
 	xhci->clk = clk;
+	xhci->main_hcd = hcd;
 	xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev,
 			dev_name(&pdev->dev), hcd);
 	if (!xhci->shared_hcd) {
 		ret = -ENOMEM;
-		goto dealloc_usb2_hcd;
+		goto disable_clk;
 	}
 
 	if ((node && of_property_read_bool(node, "usb3-lpm-capable")) ||
 			(pdata && pdata->usb3_lpm_capable))
 		xhci->quirks |= XHCI_LPM_SUPPORT;
-	/*
-	 * Set the xHCI pointer before xhci_plat_setup() (aka hcd_driver.reset)
-	 * is called by usb_add_hcd().
-	 */
-	*((struct xhci_hcd **) xhci->shared_hcd->hcd_priv) = xhci;
 
 	if (HCC_MAX_PSA(xhci->hcc_params) >= 4)
 		xhci->shared_hcd->can_do_streams = 1;
@@ -168,21 +174,26 @@ static int xhci_plat_probe(struct platform_device *pdev)
 			goto put_usb3_hcd;
 	}
 
-	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
+	ret = usb_add_hcd(hcd, irq, IRQF_SHARED);
 	if (ret)
 		goto disable_usb_phy;
 
+	ret = usb_add_hcd(xhci->shared_hcd, irq, IRQF_SHARED);
+	if (ret)
+		goto dealloc_usb2_hcd;
+
 	return 0;
 
+
+dealloc_usb2_hcd:
+	usb_remove_hcd(hcd);
+
 disable_usb_phy:
 	usb_phy_shutdown(hcd->usb_phy);
 
 put_usb3_hcd:
 	usb_put_hcd(xhci->shared_hcd);
 
-dealloc_usb2_hcd:
-	usb_remove_hcd(hcd);
-
 disable_clk:
 	if (!IS_ERR(clk))
 		clk_disable_unprepare(clk);
@@ -201,13 +212,13 @@ static int xhci_plat_remove(struct platform_device *dev)
 
 	usb_remove_hcd(xhci->shared_hcd);
 	usb_phy_shutdown(hcd->usb_phy);
-	usb_put_hcd(xhci->shared_hcd);
 
 	usb_remove_hcd(hcd);
+	usb_put_hcd(xhci->shared_hcd);
+
 	if (!IS_ERR(clk))
 		clk_disable_unprepare(clk);
 	usb_put_hcd(hcd);
-	kfree(xhci);
 
 	return 0;
 }
@@ -258,6 +269,13 @@ static const struct of_device_id usb_xhci_of_match[] = {
 MODULE_DEVICE_TABLE(of, usb_xhci_of_match);
 #endif
 
+static const struct acpi_device_id usb_xhci_acpi_match[] = {
+	/* XHCI-compliant USB Controller */
+	{ "PNP0D10", },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, usb_xhci_acpi_match);
+
 static struct platform_driver usb_xhci_driver = {
 	.probe	= xhci_plat_probe,
 	.remove	= xhci_plat_remove,
@@ -265,14 +283,14 @@ static struct platform_driver usb_xhci_driver = {
 		.name = "xhci-hcd",
 		.pm = DEV_PM_OPS,
 		.of_match_table = of_match_ptr(usb_xhci_of_match),
+		.acpi_match_table = ACPI_PTR(usb_xhci_acpi_match),
 	},
 };
 MODULE_ALIAS("platform:xhci-hcd");
 
 static int __init xhci_plat_init(void)
 {
-	xhci_init_driver(&xhci_plat_hc_driver, xhci_plat_setup);
-	xhci_plat_hc_driver.start = xhci_plat_start;
+	xhci_init_driver(&xhci_plat_hc_driver, &xhci_plat_overrides);
 	return platform_driver_register(&usb_xhci_driver);
 }
 module_init(xhci_plat_init);
diff --git a/kernel/drivers/usb/host/xhci-ring.c b/kernel/drivers/usb/host/xhci-ring.c
index b3a0a2275..db0f0831b 100644
--- a/kernel/drivers/usb/host/xhci-ring.c
+++ b/kernel/drivers/usb/host/xhci-ring.c
@@ -302,6 +302,15 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci)
 	ret = xhci_handshake(&xhci->op_regs->cmd_ring,
 			CMD_RING_RUNNING, 0, 5 * 1000 * 1000);
 	if (ret < 0) {
+		/* we are about to kill xhci, give it one more chance */
+		xhci_write_64(xhci, temp_64 | CMD_RING_ABORT,
+			      &xhci->op_regs->cmd_ring);
+		udelay(1000);
+		ret = xhci_handshake(&xhci->op_regs->cmd_ring,
+				     CMD_RING_RUNNING, 0, 3 * 1000 * 1000);
+		if (ret == 0)
+			return 0;
+
 		xhci_err(xhci, "Stopped the command ring failed, "
 				"maybe the host is dead\n");
 		xhci->xhc_state |= XHCI_STATE_DYING;
@@ -1444,7 +1453,7 @@ static unsigned int find_faked_portnum_from_hw_portnum(struct usb_hcd *hcd,
 		 * 1.1 ports are under the USB 2.0 hub.  If the port speed
 		 * matches the device speed, it's a similar speed port.
 		 */
-		if ((port_speed == 0x03) == (hcd->speed == HCD_USB3))
+		if ((port_speed == 0x03) == (hcd->speed >= HCD_USB3))
 			num_similar_speed_ports++;
 	}
 	return num_similar_speed_ports;
@@ -1506,7 +1515,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 
 	/* Find the right roothub. */
 	hcd = xhci_to_hcd(xhci);
-	if ((major_revision == 0x03) != (hcd->speed == HCD_USB3))
+	if ((major_revision == 0x03) != (hcd->speed >= HCD_USB3))
 		hcd = xhci->shared_hcd;
 
 	if (major_revision == 0) {
@@ -1532,7 +1541,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	 * correct bus_state structure.
 	 */
 	bus_state = &xhci->bus_state[hcd_index(hcd)];
-	if (hcd->speed == HCD_USB3)
+	if (hcd->speed >= HCD_USB3)
 		port_array = xhci->usb3_ports;
 	else
 		port_array = xhci->usb2_ports;
@@ -1546,7 +1555,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 		usb_hcd_resume_root_hub(hcd);
 	}
 
-	if (hcd->speed == HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
+	if (hcd->speed >= HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
 		bus_state->port_remote_wakeup &= ~(1 << faked_port_index);
 
 	if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_RESUME) {
@@ -1558,7 +1567,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 			goto cleanup;
 		}
 
-		if (DEV_SUPERSPEED(temp)) {
+		if (DEV_SUPERSPEED_ANY(temp)) {
 			xhci_dbg(xhci, "remote wake SS port %d\n", port_id);
 			/* Set a flag to say the port signaled remote wakeup,
 			 * so we can tell the difference between the end of
@@ -1574,7 +1583,8 @@ static void handle_port_status(struct xhci_hcd *xhci,
 			 */
 			bogus_port_status = true;
 			goto cleanup;
-		} else {
+		} else if (!test_bit(faked_port_index,
+				     &bus_state->resuming_ports)) {
 			xhci_dbg(xhci, "resume HS port %d\n", port_id);
 			bus_state->resume_done[faked_port_index] = jiffies +
 				msecs_to_jiffies(USB_RESUME_TIMEOUT);
@@ -1586,7 +1596,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	}
 
 	if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_U0 &&
-			DEV_SUPERSPEED(temp)) {
+			DEV_SUPERSPEED_ANY(temp)) {
 		xhci_dbg(xhci, "resume SS port %d finished\n", port_id);
 		/* We've just brought the device into U0 through either the
 		 * Resume state after a device remote wakeup, or through the
@@ -1616,7 +1626,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	 * RExit to a disconnect state).  If so, let the the driver know it's
 	 * out of the RExit state.
 	 */
-	if (!DEV_SUPERSPEED(temp) &&
+	if (!DEV_SUPERSPEED_ANY(temp) &&
 			test_and_clear_bit(faked_port_index,
 				&bus_state->rexit_ports)) {
 		complete(&bus_state->rexit_done[faked_port_index]);
@@ -1624,7 +1634,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 		goto cleanup;
 	}
 
-	if (hcd->speed != HCD_USB3)
+	if (hcd->speed < HCD_USB3)
 		xhci_test_and_clear_bit(xhci, port_array, faked_port_index,
 					PORT_PLC);
 
@@ -1812,7 +1822,9 @@ static int finish_td(struct xhci_hcd *xhci, struct xhci_td *td,
 	if (skip)
 		goto td_cleanup;
 
-	if (trb_comp_code == COMP_STOP_INVAL || trb_comp_code == COMP_STOP) {
+	if (trb_comp_code == COMP_STOP_INVAL ||
+			trb_comp_code == COMP_STOP ||
+			trb_comp_code == COMP_STOP_SHORT) {
 		/* The Endpoint Stop Command completion will take care of any
 		 * stopped TDs.  A stopped TD may be restarted, so don't update
 		 * the ring dequeue pointer or take this TD off any lists yet.
@@ -1919,8 +1931,22 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
 		else
 			*status = 0;
 		break;
-	case COMP_STOP_INVAL:
+	case COMP_STOP_SHORT:
+		if (event_trb == ep_ring->dequeue || event_trb == td->last_trb)
+			xhci_warn(xhci, "WARN: Stopped Short Packet on ctrl setup or status TRB\n");
+		else
+			td->urb->actual_length =
+				EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+
+		return finish_td(xhci, td, event_trb, event, ep, status, false);
 	case COMP_STOP:
+		/* Did we stop at data stage? */
+		if (event_trb != ep_ring->dequeue && event_trb != td->last_trb)
+			td->urb->actual_length =
+				td->urb->transfer_buffer_length -
+				EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+		/* fall through */
+	case COMP_STOP_INVAL:
 		return finish_td(xhci, td, event_trb, event, ep, status, false);
 	default:
 		if (!xhci_requires_manual_halt_cleanup(xhci,
@@ -1937,7 +1963,7 @@ static int process_ctrl_td(struct xhci_hcd *xhci, struct xhci_td *td,
 			td->urb->actual_length =
 				td->urb->transfer_buffer_length -
 				EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
-		else
+		else if (!td->urb_length_set)
 			td->urb->actual_length = 0;
 
 		return finish_td(xhci, td, event_trb, event, ep, status, false);
@@ -2014,6 +2040,8 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
 		}
 		if ((xhci->quirks & XHCI_TRUST_TX_LENGTH))
 			trb_comp_code = COMP_SHORT_TX;
+	/* fallthrough */
+	case COMP_STOP_SHORT:
 	case COMP_SHORT_TX:
 		frame->status = td->urb->transfer_flags & URB_SHORT_NOT_OK ?
 				-EREMOTEIO : 0;
@@ -2049,6 +2077,10 @@ static int process_isoc_td(struct xhci_hcd *xhci, struct xhci_td *td,
 	if (trb_comp_code == COMP_SUCCESS || skip_td) {
 		frame->actual_length = frame->length;
 		td->urb->actual_length += frame->length;
+	} else if (trb_comp_code == COMP_STOP_SHORT) {
+		frame->actual_length =
+			EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+		td->urb->actual_length += frame->actual_length;
 	} else {
 		for (cur_trb = ep_ring->dequeue,
 		     cur_seg = ep_ring->deq_seg; cur_trb != event_trb;
@@ -2129,6 +2161,7 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
 			*status = 0;
 		}
 		break;
+	case COMP_STOP_SHORT:
 	case COMP_SHORT_TX:
 		if (td->urb->transfer_flags & URB_SHORT_NOT_OK)
 			*status = -EREMOTEIO;
@@ -2145,8 +2178,20 @@ static int process_bulk_intr_td(struct xhci_hcd *xhci, struct xhci_td *td,
 				td->urb->ep->desc.bEndpointAddress,
 				td->urb->transfer_buffer_length,
 				EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)));
+	/* Stopped - short packet completion */
+	if (trb_comp_code == COMP_STOP_SHORT) {
+		td->urb->actual_length =
+			EVENT_TRB_LEN(le32_to_cpu(event->transfer_len));
+
+		if (td->urb->transfer_buffer_length <
+				td->urb->actual_length) {
+			xhci_warn(xhci, "HC gave bad length of %d bytes txed\n",
+				EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)));
+			td->urb->actual_length = 0;
+			 /* status will be set by usb core for canceled urbs */
+		}
 	/* Fast path - was this the last TRB in the TD for this URB? */
-	if (event_trb == td->last_trb) {
+	} else if (event_trb == td->last_trb) {
 		if (EVENT_TRB_LEN(le32_to_cpu(event->transfer_len)) != 0) {
 			td->urb->actual_length =
 				td->urb->transfer_buffer_length -
@@ -2230,6 +2275,7 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	u32 trb_comp_code;
 	int ret = 0;
 	int td_num = 0;
+	bool handling_skipped_tds = false;
 
 	slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags));
 	xdev = xhci->devs[slot_id];
@@ -2300,6 +2346,9 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 	case COMP_STOP_INVAL:
 		xhci_dbg(xhci, "Stopped on No-op or Link TRB\n");
 		break;
+	case COMP_STOP_SHORT:
+		xhci_dbg(xhci, "Stopped with short packet transfer detected\n");
+		break;
 	case COMP_STALL:
 		xhci_dbg(xhci, "Stalled endpoint\n");
 		ep->ep_state |= EP_HALTED;
@@ -2363,6 +2412,10 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 		ep->skip = true;
 		xhci_dbg(xhci, "Miss service interval error, set skip flag\n");
 		goto cleanup;
+	case COMP_PING_ERR:
+		ep->skip = true;
+		xhci_dbg(xhci, "No Ping response error, Skip one Isoc TD\n");
+		goto cleanup;
 	default:
 		if (xhci_is_vendor_info_code(xhci, trb_comp_code)) {
 			status = 0;
@@ -2499,13 +2552,18 @@ static int handle_tx_event(struct xhci_hcd *xhci,
 						 ep, &status);
 
 cleanup:
+
+
+		handling_skipped_tds = ep->skip &&
+			trb_comp_code != COMP_MISSED_INT &&
+			trb_comp_code != COMP_PING_ERR;
+
 		/*
-		 * Do not update event ring dequeue pointer if ep->skip is set.
-		 * Will roll back to continue process missed tds.
+		 * Do not update event ring dequeue pointer if we're in a loop
+		 * processing missed tds.
 		 */
-		if (trb_comp_code == COMP_MISSED_INT || !ep->skip) {
+		if (!handling_skipped_tds)
 			inc_deq(xhci, xhci->event_ring);
-		}
 
 		if (ret) {
 			urb = td->urb;
@@ -2540,7 +2598,7 @@ cleanup:
 	 * Process them as short transfer until reach the td pointed by
 	 * the event.
 	 */
-	} while (ep->skip && trb_comp_code != COMP_MISSED_INT);
+	} while (handling_skipped_tds);
 
 	return 0;
 }
@@ -2982,21 +3040,6 @@ int xhci_queue_intr_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 }
 
 /*
- * The TD size is the number of bytes remaining in the TD (including this TRB),
- * right shifted by 10.
- * It must fit in bits 21:17, so it can't be bigger than 31.
- */
-static u32 xhci_td_remainder(unsigned int remainder)
-{
-	u32 max = (1 << (21 - 17 + 1)) - 1;
-
-	if ((remainder >> 10) >= max)
-		return max << 17;
-	else
-		return (remainder >> 10) << 17;
-}
-
-/*
  * For xHCI 1.0 host controllers, TD size is the number of max packet sized
  * packets remaining in the TD (*not* including this TRB).
  *
@@ -3008,30 +3051,36 @@ static u32 xhci_td_remainder(unsigned int remainder)
  *
  * TD size = total_packet_count - packets_transferred
  *
- * It must fit in bits 21:17, so it can't be bigger than 31.
+ * For xHCI 0.96 and older, TD size field should be the remaining bytes
+ * including this TRB, right shifted by 10
+ *
+ * For all hosts it must fit in bits 21:17, so it can't be bigger than 31.
+ * This is taken care of in the TRB_TD_SIZE() macro
+ *
  * The last TRB in a TD must have the TD size set to zero.
  */
-static u32 xhci_v1_0_td_remainder(int running_total, int trb_buff_len,
-		unsigned int total_packet_count, struct urb *urb,
-		unsigned int num_trbs_left)
+static u32 xhci_td_remainder(struct xhci_hcd *xhci, int transferred,
+			      int trb_buff_len, unsigned int td_total_len,
+			      struct urb *urb, unsigned int num_trbs_left)
 {
-	int packets_transferred;
+	u32 maxp, total_packet_count;
+
+	if (xhci->hci_version < 0x100)
+		return ((td_total_len - transferred) >> 10);
+
+	maxp = GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
+	total_packet_count = DIV_ROUND_UP(td_total_len, maxp);
 
 	/* One TRB with a zero-length data packet. */
-	if (num_trbs_left == 0 || (running_total == 0 && trb_buff_len == 0))
+	if (num_trbs_left == 0 || (transferred == 0 && trb_buff_len == 0) ||
+	    trb_buff_len == td_total_len)
 		return 0;
 
-	/* All the TRB queueing functions don't count the current TRB in
-	 * running_total.
-	 */
-	packets_transferred = (running_total + trb_buff_len) /
-		GET_MAX_PACKET(usb_endpoint_maxp(&urb->ep->desc));
-
-	if ((total_packet_count - packets_transferred) > 31)
-		return 31 << 17;
-	return (total_packet_count - packets_transferred) << 17;
+	/* Queueing functions don't count the current TRB into transferred */
+	return (total_packet_count - ((transferred + trb_buff_len) / maxp));
 }
 
+
 static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		struct urb *urb, int slot_id, unsigned int ep_index)
 {
@@ -3041,9 +3090,11 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	struct xhci_td *td;
 	struct scatterlist *sg;
 	int num_sgs;
-	int trb_buff_len, this_sg_len, running_total;
+	int trb_buff_len, this_sg_len, running_total, ret;
 	unsigned int total_packet_count;
+	bool zero_length_needed;
 	bool first_trb;
+	int last_trb_num;
 	u64 addr;
 	bool more_trbs_coming;
 
@@ -3059,13 +3110,27 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	total_packet_count = DIV_ROUND_UP(urb->transfer_buffer_length,
 			usb_endpoint_maxp(&urb->ep->desc));
 
-	trb_buff_len = prepare_transfer(xhci, xhci->devs[slot_id],
+	ret = prepare_transfer(xhci, xhci->devs[slot_id],
 			ep_index, urb->stream_id,
 			num_trbs, urb, 0, mem_flags);
-	if (trb_buff_len < 0)
-		return trb_buff_len;
+	if (ret < 0)
+		return ret;
 
 	urb_priv = urb->hcpriv;
+
+	/* Deal with URB_ZERO_PACKET - need one more td/trb */
+	zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
+		urb_priv->length == 2;
+	if (zero_length_needed) {
+		num_trbs++;
+		xhci_dbg(xhci, "Creating zero length td.\n");
+		ret = prepare_transfer(xhci, xhci->devs[slot_id],
+				ep_index, urb->stream_id,
+				1, urb, 1, mem_flags);
+		if (ret < 0)
+			return ret;
+	}
+
 	td = urb_priv->td[0];
 
 	/*
@@ -3095,6 +3160,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		trb_buff_len = urb->transfer_buffer_length;
 
 	first_trb = true;
+	last_trb_num = zero_length_needed ? 2 : 1;
 	/* Queue the first TRB, even if it's zero-length */
 	do {
 		u32 field = 0;
@@ -3112,12 +3178,15 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		/* Chain all the TRBs together; clear the chain bit in the last
 		 * TRB to indicate it's the last TRB in the chain.
 		 */
-		if (num_trbs > 1) {
+		if (num_trbs > last_trb_num) {
 			field |= TRB_CHAIN;
-		} else {
-			/* FIXME - add check for ZERO_PACKET flag before this */
+		} else if (num_trbs == last_trb_num) {
 			td->last_trb = ep_ring->enqueue;
 			field |= TRB_IOC;
+		} else if (zero_length_needed && num_trbs == 1) {
+			trb_buff_len = 0;
+			urb_priv->td[1]->last_trb = ep_ring->enqueue;
+			field |= TRB_IOC;
 		}
 
 		/* Only set interrupt on short packet for IN endpoints */
@@ -3133,17 +3202,12 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		}
 
 		/* Set the TRB length, TD size, and interrupter fields. */
-		if (xhci->hci_version < 0x100) {
-			remainder = xhci_td_remainder(
-					urb->transfer_buffer_length -
-					running_total);
-		} else {
-			remainder = xhci_v1_0_td_remainder(running_total,
-					trb_buff_len, total_packet_count, urb,
-					num_trbs - 1);
-		}
+		remainder = xhci_td_remainder(xhci, running_total, trb_buff_len,
+					   urb->transfer_buffer_length,
+					   urb, num_trbs - 1);
+
 		length_field = TRB_LEN(trb_buff_len) |
-			remainder |
+			TRB_TD_SIZE(remainder) |
 			TRB_INTR_TARGET(0);
 
 		if (num_trbs > 1)
@@ -3179,7 +3243,7 @@ static int queue_bulk_sg_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		if (running_total + trb_buff_len > urb->transfer_buffer_length)
 			trb_buff_len =
 				urb->transfer_buffer_length - running_total;
-	} while (running_total < urb->transfer_buffer_length);
+	} while (num_trbs > 0);
 
 	check_trb_math(urb, num_trbs, running_total);
 	giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
@@ -3197,7 +3261,9 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	int num_trbs;
 	struct xhci_generic_trb *start_trb;
 	bool first_trb;
+	int last_trb_num;
 	bool more_trbs_coming;
+	bool zero_length_needed;
 	int start_cycle;
 	u32 field, length_field;
 
@@ -3228,7 +3294,6 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		num_trbs++;
 		running_total += TRB_MAX_BUFF_SIZE;
 	}
-	/* FIXME: this doesn't deal with URB_ZERO_PACKET - need one more */
 
 	ret = prepare_transfer(xhci, xhci->devs[slot_id],
 			ep_index, urb->stream_id,
@@ -3237,6 +3302,20 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		return ret;
 
 	urb_priv = urb->hcpriv;
+
+	/* Deal with URB_ZERO_PACKET - need one more td/trb */
+	zero_length_needed = urb->transfer_flags & URB_ZERO_PACKET &&
+		urb_priv->length == 2;
+	if (zero_length_needed) {
+		num_trbs++;
+		xhci_dbg(xhci, "Creating zero length td.\n");
+		ret = prepare_transfer(xhci, xhci->devs[slot_id],
+				ep_index, urb->stream_id,
+				1, urb, 1, mem_flags);
+		if (ret < 0)
+			return ret;
+	}
+
 	td = urb_priv->td[0];
 
 	/*
@@ -3258,7 +3337,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		trb_buff_len = urb->transfer_buffer_length;
 
 	first_trb = true;
-
+	last_trb_num = zero_length_needed ? 2 : 1;
 	/* Queue the first TRB, even if it's zero-length */
 	do {
 		u32 remainder = 0;
@@ -3275,12 +3354,15 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		/* Chain all the TRBs together; clear the chain bit in the last
 		 * TRB to indicate it's the last TRB in the chain.
 		 */
-		if (num_trbs > 1) {
+		if (num_trbs > last_trb_num) {
 			field |= TRB_CHAIN;
-		} else {
-			/* FIXME - add check for ZERO_PACKET flag before this */
+		} else if (num_trbs == last_trb_num) {
 			td->last_trb = ep_ring->enqueue;
 			field |= TRB_IOC;
+		} else if (zero_length_needed && num_trbs == 1) {
+			trb_buff_len = 0;
+			urb_priv->td[1]->last_trb = ep_ring->enqueue;
+			field |= TRB_IOC;
 		}
 
 		/* Only set interrupt on short packet for IN endpoints */
@@ -3288,17 +3370,12 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 			field |= TRB_ISP;
 
 		/* Set the TRB length, TD size, and interrupter fields. */
-		if (xhci->hci_version < 0x100) {
-			remainder = xhci_td_remainder(
-					urb->transfer_buffer_length -
-					running_total);
-		} else {
-			remainder = xhci_v1_0_td_remainder(running_total,
-					trb_buff_len, total_packet_count, urb,
-					num_trbs - 1);
-		}
+		remainder = xhci_td_remainder(xhci, running_total, trb_buff_len,
+					   urb->transfer_buffer_length,
+					   urb, num_trbs - 1);
+
 		length_field = TRB_LEN(trb_buff_len) |
-			remainder |
+			TRB_TD_SIZE(remainder) |
 			TRB_INTR_TARGET(0);
 
 		if (num_trbs > 1)
@@ -3318,7 +3395,7 @@ int xhci_queue_bulk_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		trb_buff_len = urb->transfer_buffer_length - running_total;
 		if (trb_buff_len > TRB_MAX_BUFF_SIZE)
 			trb_buff_len = TRB_MAX_BUFF_SIZE;
-	} while (running_total < urb->transfer_buffer_length);
+	} while (num_trbs > 0);
 
 	check_trb_math(urb, num_trbs, running_total);
 	giveback_first_trb(xhci, slot_id, ep_index, urb->stream_id,
@@ -3336,7 +3413,7 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	struct usb_ctrlrequest *setup;
 	struct xhci_generic_trb *start_trb;
 	int start_cycle;
-	u32 field, length_field;
+	u32 field, length_field, remainder;
 	struct urb_priv *urb_priv;
 	struct xhci_td *td;
 
@@ -3385,8 +3462,8 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	if (start_cycle == 0)
 		field |= 0x1;
 
-	/* xHCI 1.0 6.4.1.2.1: Transfer Type field */
-	if (xhci->hci_version == 0x100) {
+	/* xHCI 1.0/1.1 6.4.1.2.1: Transfer Type field */
+	if (xhci->hci_version >= 0x100) {
 		if (urb->transfer_buffer_length > 0) {
 			if (setup->bRequestType & USB_DIR_IN)
 				field |= TRB_TX_TYPE(TRB_DATA_IN);
@@ -3409,9 +3486,15 @@ int xhci_queue_ctrl_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	else
 		field = TRB_TYPE(TRB_DATA);
 
+	remainder = xhci_td_remainder(xhci, 0,
+				   urb->transfer_buffer_length,
+				   urb->transfer_buffer_length,
+				   urb, 1);
+
 	length_field = TRB_LEN(urb->transfer_buffer_length) |
-		xhci_td_remainder(urb->transfer_buffer_length) |
+		TRB_TD_SIZE(remainder) |
 		TRB_INTR_TARGET(0);
+
 	if (urb->transfer_buffer_length > 0) {
 		if (setup->bRequestType & USB_DIR_IN)
 			field |= TRB_DIR_IN;
@@ -3517,6 +3600,97 @@ static unsigned int xhci_get_last_burst_packet_count(struct xhci_hcd *xhci,
 	}
 }
 
+/*
+ * Calculates Frame ID field of the isochronous TRB identifies the
+ * target frame that the Interval associated with this Isochronous
+ * Transfer Descriptor will start on. Refer to 4.11.2.5 in 1.1 spec.
+ *
+ * Returns actual frame id on success, negative value on error.
+ */
+static int xhci_get_isoc_frame_id(struct xhci_hcd *xhci,
+		struct urb *urb, int index)
+{
+	int start_frame, ist, ret = 0;
+	int start_frame_id, end_frame_id, current_frame_id;
+
+	if (urb->dev->speed == USB_SPEED_LOW ||
+			urb->dev->speed == USB_SPEED_FULL)
+		start_frame = urb->start_frame + index * urb->interval;
+	else
+		start_frame = (urb->start_frame + index * urb->interval) >> 3;
+
+	/* Isochronous Scheduling Threshold (IST, bits 0~3 in HCSPARAMS2):
+	 *
+	 * If bit [3] of IST is cleared to '0', software can add a TRB no
+	 * later than IST[2:0] Microframes before that TRB is scheduled to
+	 * be executed.
+	 * If bit [3] of IST is set to '1', software can add a TRB no later
+	 * than IST[2:0] Frames before that TRB is scheduled to be executed.
+	 */
+	ist = HCS_IST(xhci->hcs_params2) & 0x7;
+	if (HCS_IST(xhci->hcs_params2) & (1 << 3))
+		ist <<= 3;
+
+	/* Software shall not schedule an Isoch TD with a Frame ID value that
+	 * is less than the Start Frame ID or greater than the End Frame ID,
+	 * where:
+	 *
+	 * End Frame ID = (Current MFINDEX register value + 895 ms.) MOD 2048
+	 * Start Frame ID = (Current MFINDEX register value + IST + 1) MOD 2048
+	 *
+	 * Both the End Frame ID and Start Frame ID values are calculated
+	 * in microframes. When software determines the valid Frame ID value;
+	 * The End Frame ID value should be rounded down to the nearest Frame
+	 * boundary, and the Start Frame ID value should be rounded up to the
+	 * nearest Frame boundary.
+	 */
+	current_frame_id = readl(&xhci->run_regs->microframe_index);
+	start_frame_id = roundup(current_frame_id + ist + 1, 8);
+	end_frame_id = rounddown(current_frame_id + 895 * 8, 8);
+
+	start_frame &= 0x7ff;
+	start_frame_id = (start_frame_id >> 3) & 0x7ff;
+	end_frame_id = (end_frame_id >> 3) & 0x7ff;
+
+	xhci_dbg(xhci, "%s: index %d, reg 0x%x start_frame_id 0x%x, end_frame_id 0x%x, start_frame 0x%x\n",
+		 __func__, index, readl(&xhci->run_regs->microframe_index),
+		 start_frame_id, end_frame_id, start_frame);
+
+	if (start_frame_id < end_frame_id) {
+		if (start_frame > end_frame_id ||
+				start_frame < start_frame_id)
+			ret = -EINVAL;
+	} else if (start_frame_id > end_frame_id) {
+		if ((start_frame > end_frame_id &&
+				start_frame < start_frame_id))
+			ret = -EINVAL;
+	} else {
+			ret = -EINVAL;
+	}
+
+	if (index == 0) {
+		if (ret == -EINVAL || start_frame == start_frame_id) {
+			start_frame = start_frame_id + 1;
+			if (urb->dev->speed == USB_SPEED_LOW ||
+					urb->dev->speed == USB_SPEED_FULL)
+				urb->start_frame = start_frame;
+			else
+				urb->start_frame = start_frame << 3;
+			ret = 0;
+		}
+	}
+
+	if (ret) {
+		xhci_warn(xhci, "Frame ID %d (reg %d, index %d) beyond range (%d, %d)\n",
+				start_frame, current_frame_id, index,
+				start_frame_id, end_frame_id);
+		xhci_warn(xhci, "Ignore frame ID field, use SIA bit instead\n");
+		return ret;
+	}
+
+	return start_frame;
+}
+
 /* This is for isoc transfer */
 static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		struct urb *urb, int slot_id, unsigned int ep_index)
@@ -3533,7 +3707,9 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 	u64 start_addr, addr;
 	int i, j;
 	bool more_trbs_coming;
+	struct xhci_virt_ep *xep;
 
+	xep = &xhci->devs[slot_id]->eps[ep_index];
 	ep_ring = xhci->devs[slot_id]->eps[ep_index].ring;
 
 	num_tds = urb->number_of_packets;
@@ -3581,6 +3757,7 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 
 		td = urb_priv->td[i];
 		for (j = 0; j < trbs_per_td; j++) {
+			int frame_id = 0;
 			u32 remainder = 0;
 			field = 0;
 
@@ -3589,8 +3766,20 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 					TRB_TLBPC(residue);
 				/* Queue the isoc TRB */
 				field |= TRB_TYPE(TRB_ISOC);
-				/* Assume URB_ISO_ASAP is set */
-				field |= TRB_SIA;
+
+				/* Calculate Frame ID and SIA fields */
+				if (!(urb->transfer_flags & URB_ISO_ASAP) &&
+						HCC_CFC(xhci->hcc_params)) {
+					frame_id = xhci_get_isoc_frame_id(xhci,
+									  urb,
+									  i);
+					if (frame_id >= 0)
+						field |= TRB_FRAME_ID(frame_id);
+					else
+						field |= TRB_SIA;
+				} else
+					field |= TRB_SIA;
+
 				if (i == 0) {
 					if (start_cycle == 0)
 						field |= 0x1;
@@ -3634,17 +3823,12 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 				trb_buff_len = td_remain_len;
 
 			/* Set the TRB length, TD size, & interrupter fields. */
-			if (xhci->hci_version < 0x100) {
-				remainder = xhci_td_remainder(
-						td_len - running_total);
-			} else {
-				remainder = xhci_v1_0_td_remainder(
-						running_total, trb_buff_len,
-						total_packet_count, urb,
-						(trbs_per_td - j - 1));
-			}
+			remainder = xhci_td_remainder(xhci, running_total,
+						   trb_buff_len, td_len,
+						   urb, trbs_per_td - j - 1);
+
 			length_field = TRB_LEN(trb_buff_len) |
-				remainder |
+				TRB_TD_SIZE(remainder) |
 				TRB_INTR_TARGET(0);
 
 			queue_trb(xhci, ep_ring, more_trbs_coming,
@@ -3666,6 +3850,10 @@ static int xhci_queue_isoc_tx(struct xhci_hcd *xhci, gfp_t mem_flags,
 		}
 	}
 
+	/* store the next frame id */
+	if (HCC_CFC(xhci->hcc_params))
+		xep->next_frame_id = urb->start_frame + num_tds * urb->interval;
+
 	if (xhci_to_hcd(xhci)->self.bandwidth_isoc_reqs == 0) {
 		if (xhci->quirks & XHCI_AMD_PLL_FIX)
 			usb_amd_quirk_pll_disable();
@@ -3702,9 +3890,9 @@ cleanup:
 /*
  * Check transfer ring to guarantee there is enough room for the urb.
  * Update ISO URB start_frame and interval.
- * Update interval as xhci_queue_intr_tx does. Just use xhci frame_index to
- * update the urb->start_frame by now.
- * Always assume URB_ISO_ASAP set, and NEVER use urb->start_frame as input.
+ * Update interval as xhci_queue_intr_tx does. Use xhci frame_index to
+ * update urb->start_frame if URB_ISO_ASAP is set in transfer_flags or
+ * Contiguous Frame ID is not supported by HC.
  */
 int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
 		struct urb *urb, int slot_id, unsigned int ep_index)
@@ -3717,8 +3905,11 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
 	int ep_interval;
 	int num_tds, num_trbs, i;
 	int ret;
+	struct xhci_virt_ep *xep;
+	int ist;
 
 	xdev = xhci->devs[slot_id];
+	xep = &xhci->devs[slot_id]->eps[ep_index];
 	ep_ring = xdev->eps[ep_index].ring;
 	ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index);
 
@@ -3735,14 +3926,10 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
 	if (ret)
 		return ret;
 
-	start_frame = readl(&xhci->run_regs->microframe_index);
-	start_frame &= 0x3fff;
-
-	urb->start_frame = start_frame;
-	if (urb->dev->speed == USB_SPEED_LOW ||
-			urb->dev->speed == USB_SPEED_FULL)
-		urb->start_frame >>= 3;
-
+	/*
+	 * Check interval value. This should be done before we start to
+	 * calculate the start frame value.
+	 */
 	xhci_interval = EP_INTERVAL_TO_UFRAMES(le32_to_cpu(ep_ctx->ep_info));
 	ep_interval = urb->interval;
 	/* Convert to microframes */
@@ -3763,6 +3950,42 @@ int xhci_queue_isoc_tx_prepare(struct xhci_hcd *xhci, gfp_t mem_flags,
 				urb->dev->speed == USB_SPEED_FULL)
 			urb->interval /= 8;
 	}
+
+	/* Calculate the start frame and put it in urb->start_frame. */
+	if (HCC_CFC(xhci->hcc_params) && !list_empty(&ep_ring->td_list)) {
+		if ((le32_to_cpu(ep_ctx->ep_info) & EP_STATE_MASK) ==
+				EP_STATE_RUNNING) {
+			urb->start_frame = xep->next_frame_id;
+			goto skip_start_over;
+		}
+	}
+
+	start_frame = readl(&xhci->run_regs->microframe_index);
+	start_frame &= 0x3fff;
+	/*
+	 * Round up to the next frame and consider the time before trb really
+	 * gets scheduled by hardare.
+	 */
+	ist = HCS_IST(xhci->hcs_params2) & 0x7;
+	if (HCS_IST(xhci->hcs_params2) & (1 << 3))
+		ist <<= 3;
+	start_frame += ist + XHCI_CFC_DELAY;
+	start_frame = roundup(start_frame, 8);
+
+	/*
+	 * Round up to the next ESIT (Endpoint Service Interval Time) if ESIT
+	 * is greate than 8 microframes.
+	 */
+	if (urb->dev->speed == USB_SPEED_LOW ||
+			urb->dev->speed == USB_SPEED_FULL) {
+		start_frame = roundup(start_frame, urb->interval << 3);
+		urb->start_frame = start_frame >> 3;
+	} else {
+		start_frame = roundup(start_frame, urb->interval);
+		urb->start_frame = start_frame;
+	}
+
+skip_start_over:
 	ep_ring->num_trbs_free_temp = ep_ring->num_trbs_free;
 
 	return xhci_queue_isoc_tx(xhci, mem_flags, urb, slot_id, ep_index);
@@ -3784,8 +4007,11 @@ static int queue_command(struct xhci_hcd *xhci, struct xhci_command *cmd,
 {
 	int reserved_trbs = xhci->cmd_ring_reserved_trbs;
 	int ret;
-	if (xhci->xhc_state & XHCI_STATE_DYING)
+
+	if (xhci->xhc_state) {
+		xhci_dbg(xhci, "xHCI dying or halted, can't queue_command\n");
 		return -ESHUTDOWN;
+	}
 
 	if (!command_must_succeed)
 		reserved_trbs++;
diff --git a/kernel/drivers/usb/host/xhci.c b/kernel/drivers/usb/host/xhci.c
index c502c2277..776d59c32 100644
--- a/kernel/drivers/usb/host/xhci.c
+++ b/kernel/drivers/usb/host/xhci.c
@@ -146,7 +146,8 @@ static int xhci_start(struct xhci_hcd *xhci)
 				"waited %u microseconds.\n",
 				XHCI_MAX_HALT_USEC);
 	if (!ret)
-		xhci->xhc_state &= ~XHCI_STATE_HALTED;
+		xhci->xhc_state &= ~(XHCI_STATE_HALTED | XHCI_STATE_DYING);
+
 	return ret;
 }
 
@@ -174,6 +175,16 @@ int xhci_reset(struct xhci_hcd *xhci)
 	command |= CMD_RESET;
 	writel(command, &xhci->op_regs->command);
 
+	/* Existing Intel xHCI controllers require a delay of 1 mS,
+	 * after setting the CMD_RESET bit, and before accessing any
+	 * HC registers. This allows the HC to complete the
+	 * reset operation and be ready for HC register access.
+	 * Without this delay, the subsequent HC register access,
+	 * may result in a system hang very rarely.
+	 */
+	if (xhci->quirks & XHCI_INTEL_HOST)
+		udelay(1000);
+
 	ret = xhci_handshake(&xhci->op_regs->command,
 			CMD_RESET, 0, 10 * 1000 * 1000);
 	if (ret)
@@ -654,21 +665,6 @@ int xhci_run(struct usb_hcd *hcd)
 }
 EXPORT_SYMBOL_GPL(xhci_run);
 
-static void xhci_only_stop_hcd(struct usb_hcd *hcd)
-{
-	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
-
-	spin_lock_irq(&xhci->lock);
-	xhci_halt(xhci);
-
-	/* The shared_hcd is going to be deallocated shortly (the USB core only
-	 * calls this function when allocation fails in usb_add_hcd(), or
-	 * usb_remove_hcd() is called).  So we need to unset xHCI's pointer.
-	 */
-	xhci->shared_hcd = NULL;
-	spin_unlock_irq(&xhci->lock);
-}
-
 /*
  * Stop xHCI driver.
  *
@@ -683,12 +679,14 @@ void xhci_stop(struct usb_hcd *hcd)
 	u32 temp;
 	struct xhci_hcd *xhci = hcd_to_xhci(hcd);
 
-	if (!usb_hcd_is_primary_hcd(hcd)) {
-		xhci_only_stop_hcd(xhci->shared_hcd);
+	if (xhci->xhc_state & XHCI_STATE_HALTED)
 		return;
-	}
 
+	mutex_lock(&xhci->mutex);
 	spin_lock_irq(&xhci->lock);
+	xhci->xhc_state |= XHCI_STATE_HALTED;
+	xhci->cmd_ring_state = CMD_RING_STATE_STOPPED;
+
 	/* Make sure the xHC is halted for a USB3 roothub
 	 * (xhci_stop() could be called as part of failed init).
 	 */
@@ -723,6 +721,7 @@ void xhci_stop(struct usb_hcd *hcd)
 	xhci_dbg_trace(xhci, trace_xhci_dbg_init,
 			"xhci_stop completed - status = %x",
 			readl(&xhci->op_regs->status));
+	mutex_unlock(&xhci->mutex);
 }
 
 /*
@@ -897,6 +896,9 @@ int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup)
 	struct usb_hcd		*hcd = xhci_to_hcd(xhci);
 	u32			command;
 
+	if (!hcd->state)
+		return 0;
+
 	if (hcd->state != HC_STATE_SUSPENDED ||
 			xhci->shared_hcd->state != HC_STATE_SUSPENDED)
 		return -EINVAL;
@@ -983,6 +985,9 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated)
 	int			retval = 0;
 	bool			comp_timer_running = false;
 
+	if (!hcd->state)
+		return 0;
+
 	/* Wait a bit if either of the roothubs need to settle from the
 	 * transition into bus suspend.
 	 */
@@ -1340,6 +1345,11 @@ int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags)
 
 	if (usb_endpoint_xfer_isoc(&urb->ep->desc))
 		size = urb->number_of_packets;
+	else if (usb_endpoint_is_bulk_out(&urb->ep->desc) &&
+	    urb->transfer_buffer_length > 0 &&
+	    urb->transfer_flags & URB_ZERO_PACKET &&
+	    !(urb->transfer_buffer_length % usb_endpoint_maxp(&urb->ep->desc)))
+		size = 2;
 	else
 		size = 1;
 
@@ -1539,7 +1549,9 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
 		xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
 				"HW died, freeing TD.");
 		urb_priv = urb->hcpriv;
-		for (i = urb_priv->td_cnt; i < urb_priv->length; i++) {
+		for (i = urb_priv->td_cnt;
+		     i < urb_priv->length && xhci->devs[urb->dev->slot_id];
+		     i++) {
 			td = urb_priv->td[i];
 			if (!list_empty(&td->td_list))
 				list_del_init(&td->td_list);
@@ -3117,7 +3129,7 @@ static u32 xhci_calculate_no_streams_bitmask(struct xhci_hcd *xhci,
 }
 
 /*
- * The USB device drivers use this function (though the HCD interface in USB
+ * The USB device drivers use this function (through the HCD interface in USB
  * core) to prepare a set of bulk endpoints to use streams.  Streams are used to
  * coordinate mass storage command queueing across multiple endpoints (basically
  * a stream ID == a task ID).
@@ -3772,8 +3784,6 @@ disable_slot:
 /*
  * Issue an Address Device command and optionally send a corresponding
  * SetAddress request to the device.
- * We should be protected by the usb_address0_mutex in hub_wq's hub_port_init,
- * so we should only issue and wait on one address command at the same time.
  */
 static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
 			     enum xhci_setup_dev setup)
@@ -3790,6 +3800,9 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev,
 
 	mutex_lock(&xhci->mutex);
 
+	if (xhci->xhc_state)	/* dying or halted */
+		goto out;
+
 	if (!udev->slot_id) {
 		xhci_dbg_trace(xhci, trace_xhci_dbg_address,
 				"Bad Slot ID %d", udev->slot_id);
@@ -3972,7 +3985,7 @@ int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1)
 	__le32 __iomem *addr;
 	int raw_port;
 
-	if (hcd->speed != HCD_USB3)
+	if (hcd->speed < HCD_USB3)
 		addr = xhci->usb2_ports[port1 - 1];
 	else
 		addr = xhci->usb3_ports[port1 - 1];
@@ -4123,7 +4136,7 @@ int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd,
 	int		hird, exit_latency;
 	int		ret;
 
-	if (hcd->speed == HCD_USB3 || !xhci->hw_lpm_support ||
+	if (hcd->speed >= HCD_USB3 || !xhci->hw_lpm_support ||
 			!udev->lpm_capable)
 		return -EPERM;
 
@@ -4240,7 +4253,7 @@ int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev)
 	struct xhci_hcd	*xhci = hcd_to_xhci(hcd);
 	int		portnum = udev->portnum - 1;
 
-	if (hcd->speed == HCD_USB3 || !xhci->sw_lpm_support ||
+	if (hcd->speed >= HCD_USB3 || !xhci->sw_lpm_support ||
 			!udev->lpm_capable)
 		return 0;
 
@@ -4680,7 +4693,6 @@ int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
 {
 	struct xhci_hcd	*xhci;
 	u16 mel;
-	int ret;
 
 	xhci = hcd_to_xhci(hcd);
 	if (!xhci || !(xhci->quirks & XHCI_LPM_SUPPORT) ||
@@ -4688,10 +4700,7 @@ int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd,
 		return 0;
 
 	mel = calculate_max_exit_latency(udev, state, USB3_LPM_DISABLED);
-	ret = xhci_change_max_exit_latency(xhci, udev, mel);
-	if (ret)
-		return ret;
-	return 0;
+	return xhci_change_max_exit_latency(xhci, udev, mel);
 }
 #else /* CONFIG_PM */
 
@@ -4771,8 +4780,16 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev,
 	ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG);
 	slot_ctx = xhci_get_slot_ctx(xhci, config_cmd->in_ctx);
 	slot_ctx->dev_info |= cpu_to_le32(DEV_HUB);
+	/*
+	 * refer to section 6.2.2: MTT should be 0 for full speed hub,
+	 * but it may be already set to 1 when setup an xHCI virtual
+	 * device, so clear it anyway.
+	 */
 	if (tt->multi)
 		slot_ctx->dev_info |= cpu_to_le32(DEV_MTT);
+	else if (hdev->speed == USB_SPEED_FULL)
+		slot_ctx->dev_info &= cpu_to_le32(~DEV_MTT);
+
 	if (xhci->hci_version > 0x95) {
 		xhci_dbg(xhci, "xHCI version %x needs hub "
 				"TT think time and number of ports\n",
@@ -4844,11 +4861,9 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 	/* XHCI controllers don't stop the ep queue on short packets :| */
 	hcd->self.no_stop_on_short = 1;
 
+	xhci = hcd_to_xhci(hcd);
+
 	if (usb_hcd_is_primary_hcd(hcd)) {
-		xhci = kzalloc(sizeof(struct xhci_hcd), GFP_KERNEL);
-		if (!xhci)
-			return -ENOMEM;
-		*((struct xhci_hcd **) hcd->hcd_priv) = xhci;
 		xhci->main_hcd = hcd;
 		/* Mark the first roothub as being USB 2.0.
 		 * The xHCI driver will register the USB 3.0 roothub.
@@ -4862,6 +4877,10 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 		 */
 		hcd->has_tt = 1;
 	} else {
+		if (xhci->sbrn == 0x31) {
+			xhci_info(xhci, "Host supports USB 3.1 Enhanced SuperSpeed\n");
+			hcd->speed = HCD_USB31;
+		}
 		/* xHCI private pointer was set in xhci_pci_probe for the second
 		 * registered roothub.
 		 */
@@ -4881,6 +4900,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 	xhci->hcc_params = readl(&xhci->cap_regs->hc_capbase);
 	xhci->hci_version = HC_VERSION(xhci->hcc_params);
 	xhci->hcc_params = readl(&xhci->cap_regs->hcc_params);
+	if (xhci->hci_version > 0x100)
+		xhci->hcc_params2 = readl(&xhci->cap_regs->hcc_params2);
 	xhci_print_registers(xhci);
 
 	xhci->quirks = quirks;
@@ -4897,13 +4918,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 	/* Make sure the HC is halted. */
 	retval = xhci_halt(xhci);
 	if (retval)
-		goto error;
+		return retval;
 
 	xhci_dbg(xhci, "Resetting HCD\n");
 	/* Reset the internal HC memory state and registers. */
 	retval = xhci_reset(xhci);
 	if (retval)
-		goto error;
+		return retval;
 	xhci_dbg(xhci, "Reset complete\n");
 
 	/* Set dma_mask and coherent_dma_mask to 64-bits,
@@ -4912,22 +4933,29 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 			!dma_set_mask(dev, DMA_BIT_MASK(64))) {
 		xhci_dbg(xhci, "Enabling 64-bit DMA addresses.\n");
 		dma_set_coherent_mask(dev, DMA_BIT_MASK(64));
+	} else {
+		/*
+		 * This is to avoid error in cases where a 32-bit USB
+		 * controller is used on a 64-bit capable system.
+		 */
+		retval = dma_set_mask(dev, DMA_BIT_MASK(32));
+		if (retval)
+			return retval;
+		xhci_dbg(xhci, "Enabling 32-bit DMA addresses.\n");
+		dma_set_coherent_mask(dev, DMA_BIT_MASK(32));
 	}
 
 	xhci_dbg(xhci, "Calling HCD init\n");
 	/* Initialize HCD and host controller data structures. */
 	retval = xhci_init(hcd);
 	if (retval)
-		goto error;
+		return retval;
 	xhci_dbg(xhci, "Called HCD init\n");
 
 	xhci_info(xhci, "hcc params 0x%08x hci version 0x%x quirks 0x%08x\n",
 		  xhci->hcc_params, xhci->hci_version, xhci->quirks);
 
 	return 0;
-error:
-	kfree(xhci);
-	return retval;
 }
 EXPORT_SYMBOL_GPL(xhci_gen_setup);
 
@@ -4992,11 +5020,21 @@ static const struct hc_driver xhci_hc_driver = {
 	.find_raw_port_number =	xhci_find_raw_port_number,
 };
 
-void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *))
+void xhci_init_driver(struct hc_driver *drv,
+		      const struct xhci_driver_overrides *over)
 {
-	BUG_ON(!setup_fn);
+	BUG_ON(!over);
+
+	/* Copy the generic table to drv then apply the overrides */
 	*drv = xhci_hc_driver;
-	drv->reset = setup_fn;
+
+	if (over) {
+		drv->hcd_priv_size += over->extra_priv_size;
+		if (over->reset)
+			drv->reset = over->reset;
+		if (over->start)
+			drv->start = over->start;
+	}
 }
 EXPORT_SYMBOL_GPL(xhci_init_driver);
 
@@ -5019,10 +5057,14 @@ static int __init xhci_hcd_init(void)
 	BUILD_BUG_ON(sizeof(struct xhci_stream_ctx) != 4*32/8);
 	BUILD_BUG_ON(sizeof(union xhci_trb) != 4*32/8);
 	BUILD_BUG_ON(sizeof(struct xhci_erst_entry) != 4*32/8);
-	BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 7*32/8);
+	BUILD_BUG_ON(sizeof(struct xhci_cap_regs) != 8*32/8);
 	BUILD_BUG_ON(sizeof(struct xhci_intr_reg) != 8*32/8);
 	/* xhci_run_regs has eight fields and embeds 128 xhci_intr_regs */
 	BUILD_BUG_ON(sizeof(struct xhci_run_regs) != (8+8*128)*32/8);
+
+	if (usb_disabled())
+		return -ENODEV;
+
 	return 0;
 }
 
diff --git a/kernel/drivers/usb/host/xhci.h b/kernel/drivers/usb/host/xhci.h
index 0f26dd269..0b9451250 100644
--- a/kernel/drivers/usb/host/xhci.h
+++ b/kernel/drivers/usb/host/xhci.h
@@ -28,6 +28,7 @@
 #include <linux/timer.h>
 #include <linux/kernel.h>
 #include <linux/usb/hcd.h>
+#include <linux/io-64-nonatomic-lo-hi.h>
 
 /* Code sharing between pci-quirks and xhci hcd */
 #include	"xhci-ext-caps.h"
@@ -56,6 +57,7 @@
  * @hcc_params:		HCCPARAMS - Capability Parameters
  * @db_off:		DBOFF - Doorbell array offset
  * @run_regs_off:	RTSOFF - Runtime register space offset
+ * @hcc_params2:	HCCPARAMS2 Capability Parameters 2, xhci 1.1 only
  */
 struct xhci_cap_regs {
 	__le32	hc_capbase;
@@ -65,6 +67,7 @@ struct xhci_cap_regs {
 	__le32	hcc_params;
 	__le32	db_off;
 	__le32	run_regs_off;
+	__le32	hcc_params2; /* xhci 1.1 */
 	/* Reserved up to (CAPLENGTH - 0x1C) */
 };
 
@@ -119,6 +122,10 @@ struct xhci_cap_regs {
 #define HCC_LTC(p)		((p) & (1 << 6))
 /* true: no secondary Stream ID Support */
 #define HCC_NSS(p)		((p) & (1 << 7))
+/* true: HC supports Stopped - Short Packet */
+#define HCC_SPC(p)		((p) & (1 << 9))
+/* true: HC has Contiguous Frame ID Capability */
+#define HCC_CFC(p)		((p) & (1 << 11))
 /* Max size for Primary Stream Arrays - 2^(n+1), where n is bits 12:15 */
 #define HCC_MAX_PSA(p)		(1 << ((((p) >> 12) & 0xf) + 1))
 /* Extended Capabilities pointer from PCI base - section 5.3.6 */
@@ -130,6 +137,21 @@ struct xhci_cap_regs {
 /* run_regs_off bitmask - bits 0:4 reserved */
 #define	RTSOFF_MASK	(~0x1f)
 
+/* HCCPARAMS2 - hcc_params2 - bitmasks */
+/* true: HC supports U3 entry Capability */
+#define	HCC2_U3C(p)		((p) & (1 << 0))
+/* true: HC supports Configure endpoint command Max exit latency too large */
+#define	HCC2_CMC(p)		((p) & (1 << 1))
+/* true: HC supports Force Save context Capability */
+#define	HCC2_FSC(p)		((p) & (1 << 2))
+/* true: HC supports Compliance Transition Capability */
+#define	HCC2_CTC(p)		((p) & (1 << 3))
+/* true: HC support Large ESIT payload Capability > 48k */
+#define	HCC2_LEC(p)		((p) & (1 << 4))
+/* true: HC support Configuration Information Capability */
+#define	HCC2_CIC(p)		((p) & (1 << 5))
+/* true: HC support Extended TBC Capability, Isoc burst count > 65535 */
+#define	HCC2_ETC(p)		((p) & (1 << 6))
 
 /* Number of registers per port */
 #define	NUM_PORT_REGS	4
@@ -265,7 +287,11 @@ struct xhci_op_regs {
 /* CONFIG - Configure Register - config_reg bitmasks */
 /* bits 0:7 - maximum number of device slots enabled (NumSlotsEn) */
 #define MAX_DEVS(p)	((p) & 0xff)
-/* bits 8:31 - reserved and should be preserved */
+/* bit 8: U3 Entry Enabled, assert PLC when root port enters U3, xhci 1.1 */
+#define CONFIG_U3E		(1 << 8)
+/* bit 9: Configuration Information Enable, xhci 1.1 */
+#define CONFIG_CIE		(1 << 9)
+/* bits 10:31 - reserved and should be preserved */
 
 /* PORTSC - Port Status and Control Register - port_status_base bitmasks */
 /* true: device connected */
@@ -302,11 +328,16 @@ struct xhci_op_regs {
 #define	XDEV_LS			(0x2 << 10)
 #define	XDEV_HS			(0x3 << 10)
 #define	XDEV_SS			(0x4 << 10)
+#define	XDEV_SSP		(0x5 << 10)
 #define DEV_UNDEFSPEED(p)	(((p) & DEV_SPEED_MASK) == (0x0<<10))
 #define DEV_FULLSPEED(p)	(((p) & DEV_SPEED_MASK) == XDEV_FS)
 #define DEV_LOWSPEED(p)		(((p) & DEV_SPEED_MASK) == XDEV_LS)
 #define DEV_HIGHSPEED(p)	(((p) & DEV_SPEED_MASK) == XDEV_HS)
 #define DEV_SUPERSPEED(p)	(((p) & DEV_SPEED_MASK) == XDEV_SS)
+#define DEV_SUPERSPEEDPLUS(p)	(((p) & DEV_SPEED_MASK) == XDEV_SSP)
+#define DEV_SUPERSPEED_ANY(p)	(((p) & DEV_SPEED_MASK) >= XDEV_SS)
+#define DEV_PORT_SPEED(p)	(((p) >> 10) & 0x0f)
+
 /* Bits 20:23 in the Slot Context are the speed for the device */
 #define	SLOT_SPEED_FS		(XDEV_FS << 10)
 #define	SLOT_SPEED_LS		(XDEV_LS << 10)
@@ -390,6 +421,9 @@ struct xhci_op_regs {
 #define	PORT_L1DS(p)		(((p) & 0xff) << 8)
 #define	PORT_HLE		(1 << 16)
 
+/* USB3 Protocol PORTLI  Port Link Information */
+#define PORT_RX_LANES(p)	(((p) >> 16) & 0xf)
+#define PORT_TX_LANES(p)	(((p) >> 20) & 0xf)
 
 /* USB2 Protocol PORTHLPMC */
 #define PORT_HIRDM(p)((p) & 3)
@@ -515,9 +549,23 @@ struct xhci_protocol_caps {
 };
 
 #define	XHCI_EXT_PORT_MAJOR(x)	(((x) >> 24) & 0xff)
+#define	XHCI_EXT_PORT_MINOR(x)	(((x) >> 16) & 0xff)
+#define	XHCI_EXT_PORT_PSIC(x)	(((x) >> 28) & 0x0f)
 #define	XHCI_EXT_PORT_OFF(x)	((x) & 0xff)
 #define	XHCI_EXT_PORT_COUNT(x)	(((x) >> 8) & 0xff)
 
+#define	XHCI_EXT_PORT_PSIV(x)	(((x) >> 0) & 0x0f)
+#define	XHCI_EXT_PORT_PSIE(x)	(((x) >> 4) & 0x03)
+#define	XHCI_EXT_PORT_PLT(x)	(((x) >> 6) & 0x03)
+#define	XHCI_EXT_PORT_PFD(x)	(((x) >> 8) & 0x01)
+#define	XHCI_EXT_PORT_LP(x)	(((x) >> 14) & 0x03)
+#define	XHCI_EXT_PORT_PSIM(x)	(((x) >> 16) & 0xffff)
+
+#define PLT_MASK        (0x03 << 6)
+#define PLT_SYM         (0x00 << 6)
+#define PLT_ASYM_RX     (0x02 << 6)
+#define PLT_ASYM_TX     (0x03 << 6)
+
 /**
  * struct xhci_container_ctx
  * @type: Type of context.  Used to calculated offsets to contained contexts.
@@ -891,6 +939,8 @@ struct xhci_virt_ep {
 	/* Bandwidth checking storage */
 	struct xhci_bw_info	bw_info;
 	struct list_head	bw_endpoint_list;
+	/* Isoch Frame ID checking storage */
+	int			next_frame_id;
 };
 
 enum xhci_overhead_type {
@@ -1059,8 +1109,8 @@ struct xhci_transfer_event {
 #define COMP_STOP	26
 /* Same as COMP_EP_STOPPED, but the transferred length in the event is invalid */
 #define COMP_STOP_INVAL	27
-/* Control Abort Error - Debug Capability - control pipe aborted */
-#define COMP_DBG_ABORT	28
+/* Same as COMP_EP_STOPPED, but a short packet detected */
+#define COMP_STOP_SHORT	28
 /* Max Exit Latency Too Large Error */
 #define COMP_MEL_ERR	29
 /* TRB type 30 reserved */
@@ -1130,6 +1180,8 @@ enum xhci_setup_dev {
 /* Normal TRB fields */
 /* transfer_len bitmasks - bits 0:16 */
 #define	TRB_LEN(p)		((p) & 0x1ffff)
+/* TD Size, packets remaining in this TD, bits 21:17 (5 bits, so max 31) */
+#define TRB_TD_SIZE(p)          (min((p), (u32)31) << 17)
 /* Interrupter Target - which MSI-X vector to target the completion event at */
 #define TRB_INTR_TARGET(p)	(((p) & 0x3ff) << 22)
 #define GET_INTR_TARGET(p)	(((p) >> 22) & 0x3ff)
@@ -1165,6 +1217,7 @@ enum xhci_setup_dev {
 
 /* Isochronous TRB specific fields */
 #define TRB_SIA			(1<<31)
+#define TRB_FRAME_ID(p)		(((p) & 0x7ff) << 20)
 
 struct xhci_generic_trb {
 	__le32 field[4];
@@ -1441,6 +1494,14 @@ static inline unsigned int hcd_index(struct usb_hcd *hcd)
 		return 1;
 }
 
+struct xhci_hub {
+	u8	maj_rev;
+	u8	min_rev;
+	u32	*psi;		/* array of protocol speed ID entries */
+	u8	psi_count;
+	u8	psi_uid_count;
+};
+
 /* There is one xhci_hcd structure per controller */
 struct xhci_hcd {
 	struct usb_hcd *main_hcd;
@@ -1458,6 +1519,7 @@ struct xhci_hcd {
 	__u32		hcs_params2;
 	__u32		hcs_params3;
 	__u32		hcc_params;
+	__u32		hcc_params2;
 
 	spinlock_t	lock;
 
@@ -1579,6 +1641,8 @@ struct xhci_hcd {
 	unsigned int		num_usb3_ports;
 	/* Array of pointers to USB 2.0 PORTSC registers */
 	__le32 __iomem		**usb2_ports;
+	struct xhci_hub		usb2_rhub;
+	struct xhci_hub		usb3_rhub;
 	unsigned int		num_usb2_ports;
 	/* support xHCI 0.96 spec USB2 software LPM */
 	unsigned		sw_lpm_support:1;
@@ -1594,10 +1658,26 @@ struct xhci_hcd {
 #define COMP_MODE_RCVRY_MSECS 2000
 };
 
+/* Platform specific overrides to generic XHCI hc_driver ops */
+struct xhci_driver_overrides {
+	size_t extra_priv_size;
+	int (*reset)(struct usb_hcd *hcd);
+	int (*start)(struct usb_hcd *hcd);
+};
+
+#define	XHCI_CFC_DELAY		10
+
 /* convert between an HCD pointer and the corresponding EHCI_HCD */
 static inline struct xhci_hcd *hcd_to_xhci(struct usb_hcd *hcd)
 {
-	return *((struct xhci_hcd **) (hcd->hcd_priv));
+	struct usb_hcd *primary_hcd;
+
+	if (usb_hcd_is_primary_hcd(hcd))
+		primary_hcd = hcd;
+	else
+		primary_hcd = hcd->primary_hcd;
+
+	return (struct xhci_hcd *) (primary_hcd->hcd_priv);
 }
 
 static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
@@ -1628,20 +1708,12 @@ static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
 static inline u64 xhci_read_64(const struct xhci_hcd *xhci,
 		__le64 __iomem *regs)
 {
-	__u32 __iomem *ptr = (__u32 __iomem *) regs;
-	u64 val_lo = readl(ptr);
-	u64 val_hi = readl(ptr + 1);
-	return val_lo + (val_hi << 32);
+	return lo_hi_readq(regs);
 }
 static inline void xhci_write_64(struct xhci_hcd *xhci,
 				 const u64 val, __le64 __iomem *regs)
 {
-	__u32 __iomem *ptr = (__u32 __iomem *) regs;
-	u32 val_lo = lower_32_bits(val);
-	u32 val_hi = upper_32_bits(val);
-
-	writel(val_lo, ptr);
-	writel(val_hi, ptr + 1);
+	lo_hi_writeq(val, regs);
 }
 
 static inline int xhci_link_trb_quirk(struct xhci_hcd *xhci)
@@ -1751,7 +1823,8 @@ int xhci_run(struct usb_hcd *hcd);
 void xhci_stop(struct usb_hcd *hcd);
 void xhci_shutdown(struct usb_hcd *hcd);
 int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks);
-void xhci_init_driver(struct hc_driver *drv, int (*setup_fn)(struct usb_hcd *));
+void xhci_init_driver(struct hc_driver *drv,
+		      const struct xhci_driver_overrides *over);
 
 #ifdef	CONFIG_PM
 int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup);