1 files changed, 19 insertions, 14 deletions

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index c50c902d009e..a9443651ce0f 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -864,13 +864,16 @@ static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci,
 			(ep->ep_state & EP_GETTING_NO_STREAMS)) {
 		int stream_id;
 
-		for (stream_id = 0; stream_id < ep->stream_info->num_streams;
+		for (stream_id = 1; stream_id < ep->stream_info->num_streams;
 				stream_id++) {
+			ring = ep->stream_info->stream_rings[stream_id];
+			if (!ring)
+				continue;
+
 			xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
 					"Killing URBs for slot ID %u, ep index %u, stream %u",
-					slot_id, ep_index, stream_id + 1);
-			xhci_kill_ring_urbs(xhci,
-					ep->stream_info->stream_rings[stream_id]);
+					slot_id, ep_index, stream_id);
+			xhci_kill_ring_urbs(xhci, ring);
 		}
 	} else {
 		ring = ep->ring;
@@ -1569,7 +1572,7 @@ static void handle_port_status(struct xhci_hcd *xhci,
 {
 	struct usb_hcd *hcd;
 	u32 port_id;
-	u32 temp, temp1;
+	u32 portsc, cmd_reg;
 	int max_ports;
 	int slot_id;
 	unsigned int faked_port_index;
@@ -1633,26 +1636,28 @@ static void handle_port_status(struct xhci_hcd *xhci,
 	/* Find the faked port hub number */
 	faked_port_index = find_faked_portnum_from_hw_portnum(hcd, xhci,
 			port_id);
+	portsc = readl(port_array[faked_port_index]);
+
+	trace_xhci_handle_port_status(faked_port_index, portsc);
 
-	temp = readl(port_array[faked_port_index]);
 	if (hcd->state == HC_STATE_SUSPENDED) {
 		xhci_dbg(xhci, "resume root hub\n");
 		usb_hcd_resume_root_hub(hcd);
 	}
 
-	if (hcd->speed >= HCD_USB3 && (temp & PORT_PLS_MASK) == XDEV_INACTIVE)
+	if (hcd->speed >= HCD_USB3 && (portsc & PORT_PLS_MASK) == XDEV_INACTIVE)
 		bus_state->port_remote_wakeup &= ~(1 << faked_port_index);
 
-	if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_RESUME) {
+	if ((portsc & PORT_PLC) && (portsc & PORT_PLS_MASK) == XDEV_RESUME) {
 		xhci_dbg(xhci, "port resume event for port %d\n", port_id);
 
-		temp1 = readl(&xhci->op_regs->command);
-		if (!(temp1 & CMD_RUN)) {
+		cmd_reg = readl(&xhci->op_regs->command);
+		if (!(cmd_reg & CMD_RUN)) {
 			xhci_warn(xhci, "xHC is not running.\n");
 			goto cleanup;
 		}
 
-		if (DEV_SUPERSPEED_ANY(temp)) {
+		if (DEV_SUPERSPEED_ANY(portsc)) {
 			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
@@ -1680,8 +1685,8 @@ static void handle_port_status(struct xhci_hcd *xhci,
 		}
 	}
 
-	if ((temp & PORT_PLC) && (temp & PORT_PLS_MASK) == XDEV_U0 &&
-			DEV_SUPERSPEED_ANY(temp)) {
+	if ((portsc & PORT_PLC) && (portsc & PORT_PLS_MASK) == XDEV_U0 &&
+			DEV_SUPERSPEED_ANY(portsc)) {
 		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
@@ -1711,7 +1716,7 @@ 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_ANY(temp) &&
+	if (!DEV_SUPERSPEED_ANY(portsc) &&
 			test_and_clear_bit(faked_port_index,
 				&bus_state->rexit_ports)) {
 		complete(&bus_state->rexit_done[faked_port_index]);