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authorLuis Henriques <henrix@sapo.pt>2009-04-01 18:06:35 +0100
committerIngo Molnar <mingo@elte.hu>2009-04-23 08:45:48 +0200
commit6ce51c431019310ca03371355a4366c4649fa349 (patch)
tree8f081f9c6ce501833f105e3d1541f748d9614adc /kernel
parent833bb3046b6cb320e775ea2160ddca87d53260d5 (diff)
genirq: do not execute DEBUG_SHIRQ when irq setup failed
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>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/irq/manage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1516ab77355..8c68d5b95d4 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -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....