genirq: Do not fiddle with IRQ_MASKED in handle_edge_irq()

IRQ_MASKED is set in mask_ack_irq() anyway. Remove it from
handle_edge_irq() to allow simpler ab^HHreuse of that function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <20110202212551.918484270@linutronix.de>

kernel/irq/chip.c

@@ -611,7 +611,7 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
 	if (unlikely((desc->status & (IRQ_INPROGRESS | IRQ_DISABLED)) ||
 		    !desc->action)) {
 		if (!irq_check_poll(desc)) {
-			desc->status |= (IRQ_PENDING | IRQ_MASKED);
+			desc->status |= IRQ_PENDING;
 			mask_ack_irq(desc);
 			goto out_unlock;
 		}