8 files changed, 28 insertions, 14 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 2b702772d04d..6dce37555c4f 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -874,6 +874,7 @@ static int ehci_hub_control (
 				ehci->reset_done[wIndex] = jiffies
 						+ msecs_to_jiffies(20);
 				usb_hcd_start_port_resume(&hcd->self, wIndex);
+				set_bit(wIndex, &ehci->resuming_ports);
 				/* check the port again */
 				mod_timer(&ehci_to_hcd(ehci)->rh_timer,
 						ehci->reset_done[wIndex]);
diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c
index f80d0330d548..8e3c878f38cf 100644
--- a/drivers/usb/host/ehci-sched.c
+++ b/drivers/usb/host/ehci-sched.c
@@ -1391,21 +1391,20 @@ iso_stream_schedule (
 
 		/* Behind the scheduling threshold? */
 		if (unlikely(start < next)) {
+			unsigned now2 = (now - base) & (mod - 1);
 
 			/* USB_ISO_ASAP: Round up to the first available slot */
 			if (urb->transfer_flags & URB_ISO_ASAP)
 				start += (next - start + period - 1) & -period;
 
 			/*
-			 * Not ASAP: Use the next slot in the stream.  If
-			 * the entire URB falls before the threshold, fail.
+			 * Not ASAP: Use the next slot in the stream,
+			 * no matter what.
 			 */
-			else if (start + span - period < next) {
-				ehci_dbg(ehci, "iso urb late %p (%u+%u < %u)\n",
+			else if (start + span - period < now2) {
+				ehci_dbg(ehci, "iso underrun %p (%u+%u < %u)\n",
 						urb, start + base,
-						span - period, next + base);
-				status = -EXDEV;
-				goto fail;
+						span - period, now2 + base);
 			}
 		}
 
diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c
index 08613e241894..0f1d193fef02 100644
--- a/drivers/usb/host/ohci-pci.c
+++ b/drivers/usb/host/ohci-pci.c
@@ -304,6 +304,11 @@ static int __init ohci_pci_init(void)
 	pr_info("%s: " DRIVER_DESC "\n", hcd_name);
 
 	ohci_init_driver(&ohci_pci_hc_driver, &pci_overrides);
+
+	/* Entries for the PCI suspend/resume callbacks are special */
+	ohci_pci_hc_driver.pci_suspend = ohci_suspend;
+	ohci_pci_hc_driver.pci_resume = ohci_resume;
+
 	return pci_register_driver(&ohci_pci_driver);
 }
 module_init(ohci_pci_init);
diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h
index 4b8a2092432f..978c849f9c9a 100644
--- a/drivers/usb/host/pci-quirks.h
+++ b/drivers/usb/host/pci-quirks.h
@@ -13,6 +13,7 @@ void usb_enable_xhci_ports(struct pci_dev *xhci_pdev);
 void usb_disable_xhci_ports(struct pci_dev *xhci_pdev);
 void sb800_prefetch(struct device *dev, int on);
 #else
+struct pci_dev;
 static inline void usb_amd_quirk_pll_disable(void) {}
 static inline void usb_amd_quirk_pll_enable(void) {}
 static inline void usb_amd_dev_put(void) {}
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index df6978abd7e6..6f8c2fd47675 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -24,6 +24,7 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/dmapool.h>
+#include <linux/dma-mapping.h>
 
 #include "xhci.h"
 
diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c
index cc24e39b97d5..f00cb203faea 100644
--- a/drivers/usb/host/xhci-pci.c
+++ b/drivers/usb/host/xhci-pci.c
@@ -93,7 +93,6 @@ 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_PANTHERPOINT_XHCI) {
-		xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
 		xhci->quirks |= XHCI_EP_LIMIT_QUIRK;
 		xhci->limit_active_eps = 64;
 		xhci->quirks |= XHCI_SW_BW_CHECKING;
diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 1e57eafa6910..5b08cd85f8e7 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -434,7 +434,7 @@ static void ring_doorbell_for_active_rings(struct xhci_hcd *xhci,
 
 	/* A ring has pending URBs if its TD list is not empty */
 	if (!(ep->ep_state & EP_HAS_STREAMS)) {
-		if (!(list_empty(&ep->ring->td_list)))
+		if (ep->ring && !(list_empty(&ep->ring->td_list)))
 			xhci_ring_ep_doorbell(xhci, slot_id, ep_index, 0);
 		return;
 	}
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 2c49f00260ca..9478caa2f71f 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -27,6 +27,7 @@
 #include <linux/moduleparam.h>
 #include <linux/slab.h>
 #include <linux/dmi.h>
+#include <linux/dma-mapping.h>
 
 #include "xhci.h"
 
@@ -329,7 +330,7 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci)
 	return;
 }
 
-static void xhci_msix_sync_irqs(struct xhci_hcd *xhci)
+static void __maybe_unused xhci_msix_sync_irqs(struct xhci_hcd *xhci)
 {
 	int i;
 
@@ -1181,9 +1182,6 @@ static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
 	}
 
 	xhci = hcd_to_xhci(hcd);
-	if (xhci->xhc_state & XHCI_STATE_HALTED)
-		return -ENODEV;
-
 	if (check_virt_dev) {
 		if (!udev->slot_id || !xhci->devs[udev->slot_id]) {
 			printk(KERN_DEBUG "xHCI %s called with unaddressed "
@@ -1199,6 +1197,9 @@ static int xhci_check_args(struct usb_hcd *hcd, struct usb_device *udev,
 		}
 	}
 
+	if (xhci->xhc_state & XHCI_STATE_HALTED)
+		return -ENODEV;
+
 	return 1;
 }
 
@@ -3898,7 +3899,7 @@ int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1)
  * Issue an Evaluate Context command to change the Maximum Exit Latency in the
  * slot context.  If that succeeds, store the new MEL in the xhci_virt_device.
  */
-static int xhci_change_max_exit_latency(struct xhci_hcd *xhci,
+static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci,
 			struct usb_device *udev, u16 max_exit_latency)
 {
 	struct xhci_virt_device *virt_dev;
@@ -4892,6 +4893,13 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
 
 	get_quirks(dev, xhci);
 
+	/* In xhci controllers which follow xhci 1.0 spec gives a spurious
+	 * success event after a short transfer. This quirk will ignore such
+	 * spurious event.
+	 */
+	if (xhci->hci_version > 0x96)
+		xhci->quirks |= XHCI_SPURIOUS_SUCCESS;
+
 	/* Make sure the HC is halted. */
 	retval = xhci_halt(xhci);
 	if (retval)