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[PATCH] USB: ehci fix driver model wakeup flags

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On some systems, EHCI seems to be getting IRQs too early during driver
setup ... before the root hub is allocated, in particular, making trouble
for any code chasing down root hub pointers!  In this case, it seems to
be safe to just ignore the root hub setting.  Thanks to Rafael J. Wysocki
for getting this properly tested.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell 2005-12-22 17:05:18 -08:00 committed by Greg Kroah-Hartman
parent 2c1c3c4cd5
commit d97cc2f2e9
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/ehci-hcd.c
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@ -624,7 +624,7 @@ static irqreturn_t ehci_irq (struct usb_hcd *hcd, struct pt_regs *regs)
}
/* remote wakeup [4.3.1] */
if ((status & STS_PCD) && device_may_wakeup(&hcd->self.root_hub->dev)) {
if (status & STS_PCD) {
unsigned i = HCS_N_PORTS (ehci->hcs_params);
/* resume root hub? */