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Input: sa1111ps2 - use disable_irq_nosync() in irq handlers

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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 20:35:57 -07:00 committed by Dmitry Torokhov
parent 0f751719e4
commit e4bd3e591c
1 changed files with 1 additions and 1 deletions
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2
drivers/input/serio/sa1111ps2.c
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@ -77,7 +77,7 @@ static irqreturn_t ps2_txint(int irq, void *dev_id)
spin_lock(&ps2if->lock);
status = sa1111_readl(ps2if->base + SA1111_PS2STAT);
if (ps2if->head == ps2if->tail) {
disable_irq(irq);
disable_irq_nosync(irq);
/* done */
} else if (status & PS2STAT_TXE) {
sa1111_writel(ps2if->buf[ps2if->tail], ps2if->base + SA1111_PS2DATA);