[PATCH] genirq: add ->retrigger() irq op to consolidate hw_irq_resend()

Add ->retrigger() irq op to consolidate hw_irq_resend() implementations.
(Most architectures had it defined to NOP anyway.)

NOTE: ia64 needs testing. i386 and x86_64 tested.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 76c8eda..19b438e 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -123,7 +123,8 @@
 		desc->status = status;
 		if ((status & (IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) {
 			desc->status = status | IRQ_REPLAY;
-			hw_resend_irq(desc->chip,irq);
+			if (desc->chip && desc->chip->retrigger)
+				desc->chip->retrigger(irq);
 		}
 		desc->chip->enable(irq);
 		/* fall-through */