commit cd7b24bb1891a10ee25168a912ff2304a9571d23
author Ingo Molnar <mingo@elte.hu> Sun Mar 26 01:36:54 2006 -0800
committer Linus Torvalds <torvalds@g5.osdl.org> Sun Mar 26 08:56:53 2006 -0800
tree c8cc6bf9b7c2d3b527f9c5bb8e7ae2b422ee3ac7
parent 6dc659d813fdd1789e605d69d0b8762d284e8c60

[PATCH] warn if free_irq() is called from IRQ context

Warn if free_irq() is called in IRQ context - free_irq() can execute /proc
VFS work, which must not be done in IRQ context.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

kernel/irq/manage.c

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 6edfcef..ac766ad 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -271,6 +271,7 @@
 	struct irqaction **p;
 	unsigned long flags;
 
+	WARN_ON(in_interrupt());
 	if (irq >= NR_IRQS)
 		return;