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>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 1f31422..438a014 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -479,6 +479,9 @@
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;
}
