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path: root/drivers/usb/host/uhci-pci.c
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Diffstat (limited to 'drivers/usb/host/uhci-pci.c')
-rw-r--r--drivers/usb/host/uhci-pci.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/drivers/usb/host/uhci-pci.c b/drivers/usb/host/uhci-pci.c
index 0f228c46eed..4cd79888804 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");