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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 <richardretanubun@ruggedcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Richard Retanubun 2011-03-17 17:39:28 -04:00 committed by Greg Kroah-Hartman
parent d834508e15
commit 5808544690
1 changed files with 3 additions and 1 deletions
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4
drivers/usb/host/isp1760-hcd.c
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@ -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);