From: Benjamin Herrenschmidt Date: Thu, 6 Dec 2007 21:29:46 +0000 (-0800) Subject: usb: Remove OHCI useless masking/unmasking of WDH interrupt X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=badef819229d455493ba97253dd0e4097b995624;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git 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 --- diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index baca09af607..8dd5d25f2f0 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)) {