[PATCH] small irq management simplification

["Jan Beulich" <jbeulich@novell.com>]

Use mask_ack_irq() where possible.

Signed-off-by: Jan Beulich <jbeulich@novell.com>

--- linux-2.6.20/kernel/irq/chip.c	2007-02-04 19:44:54.000000000 +0100
+++ 2.6.20-irq-mask-ack/kernel/irq/chip.c	2007-02-09 10:17:26.000000000 +0100
@@ -534,10 +534,8 @@ __set_irq_handler(unsigned int irq, irq_
 
 	/* Uninstall? */
 	if (handle == handle_bad_irq) {
-		if (desc->chip != &no_irq_chip) {
-			desc->chip->mask(irq);
-			desc->chip->ack(irq);
-		}
+		if (desc->chip != &no_irq_chip)
+			mask_ack_irq(desc, irq);
 		desc->status |= IRQ_DISABLED;
 		desc->depth = 1;
 	}


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