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>

1 files changed, 49 insertions, 18 deletions

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).