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irq: Always set IRQF_ONESHOT if no primary handler is specified 

If no primary handler is specified then a default one is assigned
which always returns IRQ_WAKE_THREAD. This handler requires the
IRQF_ONESHOT flag on LEVEL / EIO typed irqs because the source of
interrupt is not disabled. Since it is required for those users and
there is no difference for others it makes sense to add this flag
unconditionally.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: http://lkml.kernel.org/r/1310070737-18514-1-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Sebastian Andrzej Siewior 2011-07-07 22:32:17 +02:00 committed by Thomas Gleixner
parent 1dd75f91ae
commit f3637a5f2e
1 changed files with 1 additions and 0 deletions
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kernel/irq/manage.c
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@ -1322,6 +1322,7 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler,
if (!thread_fn)
return -EINVAL;
handler = irq_default_primary_handler;
irqflags |= IRQF_ONESHOT;
}
action = kzalloc(sizeof(struct irqaction), GFP_KERNEL);