[PATCH] USB: EHCI updates (4/4) driver model wakeup flags

This teaches the EHCI driver to use the new driver model wakeup flags,
replacing the similar ones in the HCD glue.  It also adds a workaround
for the current glitch whereby PCI init doesn't init the wakeup flags
from the PCI PM capabilities.  (EHCI controllers don't worry about
legacy mode; the PCI PM capability would always do the job.)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c
index 13f73a836e45..ac088bc72f1c 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: