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Input: bf54x-keys - fix system hang when pressing a key 

We need to use the nosync version of disable_irq so that we don't hang in
the IRQ handler as we don't ACK the interrupt until later.  This used to
work regardless, but at some point, the IRQ behavior changed.  Not sure
when exactly.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Mike Frysinger 2010-03-09 20:38:45 -08:00 committed by Dmitry Torokhov
parent eb8bff85c5
commit 9e49f6c133
1 changed files with 1 additions and 1 deletions
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2
drivers/input/keyboard/bf54x-keys.c
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@ -162,7 +162,7 @@ static irqreturn_t bfin_kpad_isr(int irq, void *dev_id)
input_sync(input);
if (bfin_kpad_get_keypressed(bf54x_kpad)) {
disable_irq(bf54x_kpad->irq);
disable_irq_nosync(bf54x_kpad->irq);
bf54x_kpad->lastkey = key;
mod_timer(&bf54x_kpad->timer,
jiffies + bf54x_kpad->keyup_test_jiffies);