[patch] one extra (incorrect) test in mask_ack_irq()

[Frank Rowand]

preempt-irqs-core.patch added an incorrect check for the existence of
desc->chip->ack to mask_ack_irq()

Signed-off-by: Frank Rowand <frank.rowand@xxxxxxxxxxx>

--- linux-2.6.29-rc7/kernel/irq/chip.c	2009-03-18 17:58:03.000000000 -0800
+++ linux-2.6.29-rc7_new/kernel/irq/chip.c	2009-03-18 17:59:15.000000000 -0800
@@ -293,7 +293,6 @@ static inline void mask_ack_irq(struct i
 	if (desc->chip->mask_ack)
 		desc->chip->mask_ack(irq);
 	else {
-		if (desc->chip->ack)
 		if (desc->chip->mask)
 			desc->chip->mask(irq);
 		if (desc->chip->ack)

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