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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" <[email protected]>
Signed-off-by: Jordan Crouse <[email protected]>
Signed-off-by: David Brownell <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
David Brownell 2005-08-31 10:47:20 -07:00 • committed by Greg Kroah-Hartman
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) {
ohci_vdbg (ohci, "resume detect\n");
ohci_writel (ohci, OHCI_INTR_RD, &regs->intrstatus);
if (hcd->state != HC_STATE_QUIESCING)
schedule_work(&ohci->rh_resume);
}