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authorIngo Molnar <mingo@elte.hu>2008-01-30 13:33:24 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:33:24 +0100
commit70edcd77a0d6d0f8731c826764f5eb6732f521e9 (patch)
tree1ea618a73c784c11b52168046d5a27197398520a
parent17abecfe651c862cd31b1f9e8ef6cfc29083f00d (diff)
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>
-rw-r--r--kernel/irq/manage.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1f314221d53..438a0146428 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -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;
}