From 5808544690300071f09eef9ab83a0fb1f60cf1cd Mon Sep 17 00:00:00 2001 From: Richard Retanubun Date: Thu, 17 Mar 2011 17:39:28 -0400 Subject: [PATCH] USB: isp1760-hcd: move imask clear after pending work is done This patch moves the HcInterrupt register write to clear the pending interrupt to after the isr work is done, doing this removes glitches in the irq line. Signed-off-by: Richard Retanubun Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/isp1760-hcd.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c index 795345ad45e6..564b03337e7e 100644 --- a/drivers/usb/host/isp1760-hcd.c +++ b/drivers/usb/host/isp1760-hcd.c @@ -1676,13 +1676,15 @@ static irqreturn_t isp1760_irq(struct usb_hcd *hcd) if (unlikely(!imask)) goto leave; - reg_write32(hcd->regs, HC_INTERRUPT_REG, imask); if (imask & (HC_ATL_INT | HC_SOT_INT)) do_atl_int(hcd); if (imask & HC_INTL_INT) do_intl_int(hcd); + /* Clear interrupt mask on device after the work is done */ + reg_write32(hcd->regs, HC_INTERRUPT_REG, imask); + irqret = IRQ_HANDLED; leave: spin_unlock(&priv->lock); -- GitLab