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genirq: do not execute DEBUG_SHIRQ when irq setup failed

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When requesting an IRQ, the DEBUG_SHIRQ code executes a fake IRQ just to make
sure the driver is ready to receive an IRQ immediately.  The problem was that
this fake IRQ was being executed even if interrupt line failed to be allocated
by __setup_irq.

Signed-off-by: Luis Henriques <henrix@sapo.pt>
LKML-Reference: <20090401170635.GA4392@hades.domain.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[ fixed bug pointed out by a warning reported by Stephen Rothwell ]
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Luis Henriques 2009-04-01 18:06:35 +01:00 committed by Ingo Molnar
parent 833bb3046b
commit 6ce51c4310
1 changed files with 1 additions and 1 deletions
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2
kernel/irq/manage.c
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@ -768,7 +768,7 @@ int request_irq(unsigned int irq, irq_handler_t handler,
kfree(action);
#ifdef CONFIG_DEBUG_SHIRQ
if (irqflags & IRQF_SHARED) {
if (!retval && (irqflags & IRQF_SHARED)) {
/*
* It's a shared IRQ -- the driver ought to be prepared for it
* to happen immediately, so let's make sure....