From badef819229d455493ba97253dd0e4097b995624 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 6 Dec 2007 13:29:46 -0800 Subject: [PATCH] usb: Remove OHCI useless masking/unmasking of WDH interrupt The OHCI driver's IRQ handler, while processing a WDH interrupt, masks and unmasks it. I believe this is both broken (the write may still be posted during the donelist processing it's trying to safeguard) and useless as this IRQ may not be reissued until it's acked (unless this legacy code is an uncommented workaround for some chip erratum). Signed-off-by: Benjamin Herrenschmidt Signed-off-by: David Brownell Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ohci-hcd.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index baca09af60..8dd5d25f2f 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -810,13 +810,9 @@ static irqreturn_t ohci_irq (struct usb_hcd *hcd) } if (ints & OHCI_INTR_WDH) { - if (HC_IS_RUNNING(hcd->state)) - ohci_writel (ohci, OHCI_INTR_WDH, ®s->intrdisable); spin_lock (&ohci->lock); dl_done_list (ohci); spin_unlock (&ohci->lock); - if (HC_IS_RUNNING(hcd->state)) - ohci_writel (ohci, OHCI_INTR_WDH, ®s->intrenable); } if (quirk_zfmicro(ohci) && (ints & OHCI_INTR_SF)) { -- 2.39.5