Commit 70edcd77 authored by Ingo Molnar's avatar 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: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 17abecfe
...@@ -479,6 +479,9 @@ void free_irq(unsigned int irq, void *dev_id) ...@@ -479,6 +479,9 @@ void free_irq(unsigned int irq, void *dev_id)
return; return;
} }
printk(KERN_ERR "Trying to free already-free IRQ %d\n", irq); 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); spin_unlock_irqrestore(&desc->lock, flags);
return; return;
} }
......
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