Commit 70edcd77 authored Jan 30, 2008 by Ingo Molnar

genirq: stackdump after the "Trying to free already-free IRQ" message



these bugs are harder to find than they seem, a stackdump helps.

make it dependent on CONFIG_DEBUG_SHIRQ so that people can turn it off
if it annoys them.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 17abecfe

kernel/irq/manage.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -479,6 +479,9 @@ void free_irq(unsigned int irq, void *dev_id)
		return;
		}
		printk(KERN_ERR "Trying to free already-free IRQ %d\n", irq);
		#ifdef CONFIG_DEBUG_SHIRQ
		dump_stack();
		#endif
		spin_unlock_irqrestore(&desc->lock, flags);
		return;
		}