[PATCH] genirq: fix typo in IRQ resend

Fix a bug where the IRQ_PENDING flag is never cleared and the ISR is called
endlessly without an actual interrupt.

Signed-off-by: Imre Deak <imre.deak@solidboot.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c
index 872f91b..35f10f7 100644 (file)
--- a/kernel/irq/resend.c
+++ b/kernel/irq/resend.c
@@ -63,8 +63,7 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq)
        desc->chip->enable(irq);
 
        if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
-               desc->status &= ~IRQ_PENDING;
-               desc->status = status | IRQ_REPLAY;
+               desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY;
 
                if (!desc->chip || !desc->chip->retrigger ||
                                        !desc->chip->retrigger(irq)) {