Merge tag 'usb-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB driver update from Greg KH:
 "Here's the big USB driver update for 3.13-rc1.

  It includes the usual xhci changes, EHCI updates to get the scheduling
  of USB transactions working better, and a raft of gadget and musb
  updates as well.

  All of this has been in linux-next for a while with no reported
  issues"

* tag 'usb-3.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (305 commits)
  USB: Maintainers change for usb serial drivers
  usb: usbtest: support container id descriptor test
  usb: usbtest: support superspeed device capbility descriptor test
  usb: usbtest: support usb2 extension descriptor test
  usb: chipidea: only get vbus regulator for non-peripheral mode
  USB: ehci-atmel: add usb_clk for transition to CCF
  usb: cdc-wdm: ignore speed change notifications
  USB: cdc-wdm: support back-to-back USB_CDC_NOTIFY_RESPONSE_AVAILABLE notifications
  usbatm: Fix dynamic_debug / ratelimited atm_dbg and atm_rldbg macros
  printk: pr_debug_ratelimited: check state first to reduce "callbacks suppressed" messages
  usb: usbtest: support bos descriptor test for usb 3.0
  USB: phy: samsung: Support multiple PHYs of same type
  usb: wusbcore: change WA_SEGS_MAX to a legal value
  usb: wusbcore: add a quirk for Alereon HWA device isoc behavior
  usb: wusbcore: combine multiple isoc frames in a single transfer request.
  usb: wusbcore: set the RPIPE wMaxPacketSize value correctly
  usb: chipidea: host: more enhancement when ci->hcd is NULL
  usb: ohci: remove ep93xx bus glue platform driver
  usb: usbtest: fix checkpatch warning as sizeof code style
  UWB: clean up attribute use by using ATTRIBUTE_GROUPS()
  ...

1 files changed, 12 insertions, 7 deletions

diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c
index 0f228c46eeda..4cd79888804b 100644
--- a/drivers/usb/host/uhci-pci.c
+++ b/drivers/usb/host/uhci-pci.c
@@ -162,6 +162,8 @@ static void uhci_shutdown(struct pci_dev *pdev)
 
 #ifdef CONFIG_PM
 
+static int uhci_pci_resume(struct usb_hcd *hcd, bool hibernated);
+
 static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 {
 	struct uhci_hcd *uhci = hcd_to_uhci(hcd);
@@ -174,12 +176,6 @@ static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 	if (!HCD_HW_ACCESSIBLE(hcd) || uhci->dead)
 		goto done_okay;		/* Already suspended or dead */
 
-	if (uhci->rh_state > UHCI_RH_SUSPENDED) {
-		dev_warn(uhci_dev(uhci), "Root hub isn't suspended!\n");
-		rc = -EBUSY;
-		goto done;
-	};
-
 	/* All PCI host controllers are required to disable IRQ generation
 	 * at the source, so we must turn off PIRQ.
 	 */
@@ -195,8 +191,15 @@ static int uhci_pci_suspend(struct usb_hcd *hcd, bool do_wakeup)
 
 done_okay:
 	clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags);
-done:
 	spin_unlock_irq(&uhci->lock);
+
+	synchronize_irq(hcd->irq);
+
+	/* Check for race with a wakeup request */
+	if (do_wakeup && HCD_WAKEUP_PENDING(hcd)) {
+		uhci_pci_resume(hcd, false);
+		rc = -EBUSY;
+	}
 	return rc;
 }
 
@@ -299,3 +302,5 @@ static struct pci_driver uhci_pci_driver = {
 	},
 #endif
 };
+
+MODULE_SOFTDEP("pre: ehci_pci");