9 files changed, 86 insertions, 21 deletions

diff --git a/kernel/drivers/usb/dwc3/ep0.c b/kernel/drivers/usb/dwc3/ep0.c
index 69e769c35..06ecd1e68 100644
--- a/kernel/drivers/usb/dwc3/ep0.c
+++ b/kernel/drivers/usb/dwc3/ep0.c
@@ -820,6 +820,11 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc,
 		unsigned maxp = ep0->endpoint.maxpacket;
 
 		transfer_size += (maxp - (transfer_size % maxp));
+
+		/* Maximum of DWC3_EP0_BOUNCE_SIZE can only be received */
+		if (transfer_size > DWC3_EP0_BOUNCE_SIZE)
+			transfer_size = DWC3_EP0_BOUNCE_SIZE;
+
 		transferred = min_t(u32, ur->length,
 				transfer_size - length);
 		memcpy(ur->buf, dwc->ep0_bounce, transferred);
@@ -941,11 +946,14 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc,
 			return;
 		}
 
-		WARN_ON(req->request.length > DWC3_EP0_BOUNCE_SIZE);
-
 		maxpacket = dep->endpoint.maxpacket;
 		transfer_size = roundup(req->request.length, maxpacket);
 
+		if (transfer_size > DWC3_EP0_BOUNCE_SIZE) {
+			dev_WARN(dwc->dev, "bounce buf can't handle req len\n");
+			transfer_size = DWC3_EP0_BOUNCE_SIZE;
+		}
+
 		dwc->ep0_bounced = true;
 
 		/*
diff --git a/kernel/drivers/usb/gadget/function/f_uac2.c b/kernel/drivers/usb/gadget/function/f_uac2.c
index 531861547..96d935b00 100644
--- a/kernel/drivers/usb/gadget/function/f_uac2.c
+++ b/kernel/drivers/usb/gadget/function/f_uac2.c
@@ -975,6 +975,29 @@ free_ep(struct uac2_rtd_params *prm, struct usb_ep *ep)
 			"%s:%d Error!\n", __func__, __LINE__);
 }
 
+static void set_ep_max_packet_size(const struct f_uac2_opts *uac2_opts,
+	struct usb_endpoint_descriptor *ep_desc,
+	unsigned int factor, bool is_playback)
+{
+	int chmask, srate, ssize;
+	u16 max_packet_size;
+
+	if (is_playback) {
+		chmask = uac2_opts->p_chmask;
+		srate = uac2_opts->p_srate;
+		ssize = uac2_opts->p_ssize;
+	} else {
+		chmask = uac2_opts->c_chmask;
+		srate = uac2_opts->c_srate;
+		ssize = uac2_opts->c_ssize;
+	}
+
+	max_packet_size = num_channels(chmask) * ssize *
+		DIV_ROUND_UP(srate, factor / (1 << (ep_desc->bInterval - 1)));
+	ep_desc->wMaxPacketSize = cpu_to_le16(min(max_packet_size,
+				le16_to_cpu(ep_desc->wMaxPacketSize)));
+}
+
 static int
 afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
 {
@@ -1070,10 +1093,14 @@ afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
 	uac2->p_prm.uac2 = uac2;
 	uac2->c_prm.uac2 = uac2;
 
+	/* Calculate wMaxPacketSize according to audio bandwidth */
+	set_ep_max_packet_size(uac2_opts, &fs_epin_desc, 1000, true);
+	set_ep_max_packet_size(uac2_opts, &fs_epout_desc, 1000, false);
+	set_ep_max_packet_size(uac2_opts, &hs_epin_desc, 8000, true);
+	set_ep_max_packet_size(uac2_opts, &hs_epout_desc, 8000, false);
+
 	hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress;
-	hs_epout_desc.wMaxPacketSize = fs_epout_desc.wMaxPacketSize;
 	hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress;
-	hs_epin_desc.wMaxPacketSize = fs_epin_desc.wMaxPacketSize;
 
 	ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, NULL);
 	if (ret)
diff --git a/kernel/drivers/usb/gadget/udc/m66592-udc.c b/kernel/drivers/usb/gadget/udc/m66592-udc.c
index 309706fe4..9704053df 100644
--- a/kernel/drivers/usb/gadget/udc/m66592-udc.c
+++ b/kernel/drivers/usb/gadget/udc/m66592-udc.c
@@ -1052,7 +1052,7 @@ static void set_feature(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
 				tmp = m66592_read(m66592, M66592_INTSTS0) &
 								M66592_CTSQ;
 				udelay(1);
-			} while (tmp != M66592_CS_IDST || timeout-- > 0);
+			} while (tmp != M66592_CS_IDST && timeout-- > 0);
 
 			if (tmp == M66592_CS_IDST)
 				m66592_bset(m66592,
diff --git a/kernel/drivers/usb/host/ehci-sysfs.c b/kernel/drivers/usb/host/ehci-sysfs.c
index 5e44407aa..5216f2b09 100644
--- a/kernel/drivers/usb/host/ehci-sysfs.c
+++ b/kernel/drivers/usb/host/ehci-sysfs.c
@@ -29,7 +29,7 @@ static ssize_t show_companion(struct device *dev,
 	int			count = PAGE_SIZE;
 	char			*ptr = buf;
 
-	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	ehci = hcd_to_ehci(dev_get_drvdata(dev));
 	nports = HCS_N_PORTS(ehci->hcs_params);
 
 	for (index = 0; index < nports; ++index) {
@@ -54,7 +54,7 @@ static ssize_t store_companion(struct device *dev,
 	struct ehci_hcd		*ehci;
 	int			portnum, new_owner;
 
-	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	ehci = hcd_to_ehci(dev_get_drvdata(dev));
 	new_owner = PORT_OWNER;		/* Owned by companion */
 	if (sscanf(buf, "%d", &portnum) != 1)
 		return -EINVAL;
@@ -85,7 +85,7 @@ static ssize_t show_uframe_periodic_max(struct device *dev,
 	struct ehci_hcd		*ehci;
 	int			n;
 
-	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	ehci = hcd_to_ehci(dev_get_drvdata(dev));
 	n = scnprintf(buf, PAGE_SIZE, "%d\n", ehci->uframe_periodic_max);
 	return n;
 }
@@ -101,7 +101,7 @@ static ssize_t store_uframe_periodic_max(struct device *dev,
 	unsigned long		flags;
 	ssize_t			ret;
 
-	ehci = hcd_to_ehci(bus_to_hcd(dev_get_drvdata(dev)));
+	ehci = hcd_to_ehci(dev_get_drvdata(dev));
 	if (kstrtouint(buf, 0, &uframe_periodic_max) < 0)
 		return -EINVAL;
 
diff --git a/kernel/drivers/usb/serial/ftdi_sio.c b/kernel/drivers/usb/serial/ftdi_sio.c
index 4c8b3b821..a5a0376bb 100644
--- a/kernel/drivers/usb/serial/ftdi_sio.c
+++ b/kernel/drivers/usb/serial/ftdi_sio.c
@@ -605,6 +605,10 @@ static const struct usb_device_id id_table_combined[] = {
 	{ USB_DEVICE(FTDI_VID, FTDI_NT_ORIONLXM_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
 	{ USB_DEVICE(FTDI_VID, FTDI_SYNAPSE_SS200_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX2WI_PID) },
+	{ USB_DEVICE(FTDI_VID, FTDI_CUSTOMWARE_MINIPLEX3_PID) },
 	/*
 	 * ELV devices:
 	 */
diff --git a/kernel/drivers/usb/serial/ftdi_sio_ids.h b/kernel/drivers/usb/serial/ftdi_sio_ids.h
index 792e05412..2943b97b2 100644
--- a/kernel/drivers/usb/serial/ftdi_sio_ids.h
+++ b/kernel/drivers/usb/serial/ftdi_sio_ids.h
@@ -568,6 +568,14 @@
  */
 #define FTDI_SYNAPSE_SS200_PID 0x9090 /* SS200 - SNAP Stick 200 */
 
+/*
+ * CustomWare / ShipModul NMEA multiplexers product ids (FTDI_VID)
+ */
+#define FTDI_CUSTOMWARE_MINIPLEX_PID	0xfd48	/* MiniPlex first generation NMEA Multiplexer */
+#define FTDI_CUSTOMWARE_MINIPLEX2_PID	0xfd49	/* MiniPlex-USB and MiniPlex-2 series */
+#define FTDI_CUSTOMWARE_MINIPLEX2WI_PID	0xfd4a	/* MiniPlex-2Wi */
+#define FTDI_CUSTOMWARE_MINIPLEX3_PID	0xfd4b	/* MiniPlex-3 series */
+
 
 /********************************/
 /** third-party VID/PID combos **/
diff --git a/kernel/drivers/usb/serial/pl2303.c b/kernel/drivers/usb/serial/pl2303.c
index f5257af33..ae682e4ee 100644
--- a/kernel/drivers/usb/serial/pl2303.c
+++ b/kernel/drivers/usb/serial/pl2303.c
@@ -362,21 +362,38 @@ static speed_t pl2303_encode_baud_rate_direct(unsigned char buf[4],
 static speed_t pl2303_encode_baud_rate_divisor(unsigned char buf[4],
 								speed_t baud)
 {
-	unsigned int tmp;
+	unsigned int baseline, mantissa, exponent;
 
 	/*
 	 * Apparently the formula is:
-	 * baudrate = 12M * 32 / (2^buf[1]) / buf[0]
+	 *   baudrate = 12M * 32 / (mantissa * 4^exponent)
+	 * where
+	 *   mantissa = buf[8:0]
+	 *   exponent = buf[11:9]
 	 */
-	tmp = 12000000 * 32 / baud;
+	baseline = 12000000 * 32;
+	mantissa = baseline / baud;
+	if (mantissa == 0)
+		mantissa = 1;	/* Avoid dividing by zero if baud > 32*12M. */
+	exponent = 0;
+	while (mantissa >= 512) {
+		if (exponent < 7) {
+			mantissa >>= 2;	/* divide by 4 */
+			exponent++;
+		} else {
+			/* Exponent is maxed. Trim mantissa and leave. */
+			mantissa = 511;
+			break;
+		}
+	}
+
 	buf[3] = 0x80;
 	buf[2] = 0;
-	buf[1] = (tmp >= 256);
-	while (tmp >= 256) {
-		tmp >>= 2;
-		buf[1] <<= 1;
-	}
-	buf[0] = tmp;
+	buf[1] = exponent << 1 | mantissa >> 8;
+	buf[0] = mantissa & 0xff;
+
+	/* Calculate and return the exact baud rate. */
+	baud = (baseline / mantissa) >> (exponent << 1);
 
 	return baud;
 }
diff --git a/kernel/drivers/usb/serial/qcserial.c b/kernel/drivers/usb/serial/qcserial.c
index d15654572..ebcec8cda 100644
--- a/kernel/drivers/usb/serial/qcserial.c
+++ b/kernel/drivers/usb/serial/qcserial.c
@@ -139,6 +139,7 @@ static const struct usb_device_id id_table[] = {
 	{USB_DEVICE(0x0AF0, 0x8120)},	/* Option GTM681W */
 
 	/* non-Gobi Sierra Wireless devices */
+	{DEVICE_SWI(0x03f0, 0x4e1d)},	/* HP lt4111 LTE/EV-DO/HSPA+ Gobi 4G Module */
 	{DEVICE_SWI(0x0f3d, 0x68a2)},	/* Sierra Wireless MC7700 */
 	{DEVICE_SWI(0x114f, 0x68a2)},	/* Sierra Wireless MC7750 */
 	{DEVICE_SWI(0x1199, 0x68a2)},	/* Sierra Wireless MC7710 */
diff --git a/kernel/drivers/usb/serial/symbolserial.c b/kernel/drivers/usb/serial/symbolserial.c
index 8fceec729..6ed804450 100644
--- a/kernel/drivers/usb/serial/symbolserial.c
+++ b/kernel/drivers/usb/serial/symbolserial.c
@@ -94,7 +94,7 @@ exit:
 
 static int symbol_open(struct tty_struct *tty, struct usb_serial_port *port)
 {
-	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	struct symbol_private *priv = usb_get_serial_port_data(port);
 	unsigned long flags;
 	int result = 0;
 
@@ -120,7 +120,7 @@ static void symbol_close(struct usb_serial_port *port)
 static void symbol_throttle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	struct symbol_private *priv = usb_get_serial_port_data(port);
 
 	spin_lock_irq(&priv->lock);
 	priv->throttled = true;
@@ -130,7 +130,7 @@ static void symbol_throttle(struct tty_struct *tty)
 static void symbol_unthrottle(struct tty_struct *tty)
 {
 	struct usb_serial_port *port = tty->driver_data;
-	struct symbol_private *priv = usb_get_serial_data(port->serial);
+	struct symbol_private *priv = usb_get_serial_port_data(port);
 	int result;
 	bool was_throttled;