1 files changed, 11 insertions, 9 deletions

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 13f73a836e45..08ca0f849dab 100644
--- a/drivers/usb/host/ehci-pci.c
+++ b/drivers/usb/host/ehci-pci.c
@@ -210,7 +210,16 @@ static int ehci_pci_setup(struct usb_hcd *hcd)
         /* Serial Bus Release Number is at PCI 0x60 offset */
         pci_read_config_byte(pdev, 0x60, &ehci->sbrn);
 
-        /* REVISIT:  per-port wake capability (PCI 0x62) currently unused */
+        /* Workaround current PCI init glitch:  wakeup bits aren't
+         * being set from PCI PM capability.
+         */
+        if (!device_can_wakeup(&pdev->dev)) {
+                u16     port_wake;
+
+                pci_read_config_word(pdev, 0x62, &port_wake);
+                if (port_wake & 0x0001)
+                        device_init_wakeup(&pdev->dev, 1);
+        }
 
         retval = ehci_pci_reinit(ehci, pdev);
 done:
@@ -269,7 +278,6 @@ static int ehci_pci_resume(struct usb_hcd *hcd)
 {
         struct ehci_hcd         *ehci = hcd_to_ehci(hcd);
         unsigned                port;
-        struct usb_device       *root = hcd->self.root_hub;
         struct pci_dev          *pdev = to_pci_dev(hcd->self.controller);
         int                     retval = -EINVAL;
 
@@ -303,13 +311,7 @@ static int ehci_pci_resume(struct usb_hcd *hcd)
 
 restart:
         ehci_dbg(ehci, "lost power, restarting\n");
-        for (port = HCS_N_PORTS(ehci->hcs_params); port > 0; ) {
-                port--;
-                if (!root->children [port])
-                        continue;
-                usb_set_device_state(root->children[port],
-                                        USB_STATE_NOTATTACHED);
-        }
+        usb_root_hub_lost_power(hcd->self.root_hub);
 
         /* Else reset, to cope with power loss or flush-to-storage
          * style "resume" having let BIOS kick in during reboot.