Commit 6ce51c43 authored Apr 01, 2009 by Luis Henriques Committed by Ingo Molnar Apr 23, 2009

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>

parent 833bb304

kernel/irq/manage.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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....