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Input: ucb1400 - use disable_irq_nosync() in irq handler

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disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.

Signed-off-by: Ben Nizette <bn@niasdigital.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Ben Nizette 2009-04-17 20:35:58 -07:00 committed by Dmitry Torokhov
parent 29fa98bd9b
commit 3deb649e65
1 changed files with 1 additions and 1 deletions
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drivers/input/touchscreen/ucb1400_ts.c
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@ -256,7 +256,7 @@ static irqreturn_t ucb1400_hard_irq(int irqnr, void *devid)
struct ucb1400_ts *ucb = devid;
if (irqnr == ucb->irq) {
disable_irq(ucb->irq);
disable_irq_nosync(ucb->irq);
ucb->irq_pending = 1;
wake_up(&ucb->ts_wait);
return IRQ_HANDLED;