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[PATCH] USB: OHCI irq tweak

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Evidently there are some boards which care a lot about this, but
as a rule it's been hard to notice.

OHCI_INTR_RD wasn't always cleared in the ohci irq handler.  On some
systems this means certain remote wakeup scenarios could seem to hang
(in an interrupt storm, RD never clearing).

From: "William Morrow" <William.Morrow@amd.com>
Signed-off-by: Jordan Crouse <jordan.crouse@amd.com>
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 2005-08-31 10:47:20 -07:00 committed by Greg Kroah-Hartman
parent 4809ecc299
commit e0fd3cbc50
1 changed files with 1 additions and 0 deletions
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1
drivers/usb/host/ohci-hcd.c
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@ -719,6 +719,7 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd, struct pt_regs *ptregs)
if (ints & OHCI_INTR_RD) { if (ints & OHCI_INTR_RD) {
ohci_vdbg (ohci, "resume detect\n"); ohci_vdbg (ohci, "resume detect\n");
ohci_writel (ohci, OHCI_INTR_RD, &regs->intrstatus);
if (hcd->state != HC_STATE_QUIESCING) if (hcd->state != HC_STATE_QUIESCING)
schedule_work(&ohci->rh_resume); schedule_work(&ohci->rh_resume);
} }