[PATCH 3/8] powerpc irq: remove stale and misleading comment

[Milton Miller]

The comment claims we will call host->ops->map() to update the flags if
we find a previously established mapping, but we never did.  We used
to call remap, but that call was removed in da05198002 (powerpc: Remove
irq_host_ops->remap hook).

Signed-off-by: Milton Miller <miltonm at bga.com>

Index: work.git/arch/powerpc/kernel/irq.c
===================================================================
--- work.git.orig/arch/powerpc/kernel/irq.c	2011-05-24 20:43:46.350096135 -0500
+++ work.git/arch/powerpc/kernel/irq.c	2011-05-24 21:03:49.520096058 -0500
@@ -727,9 +727,7 @@ unsigned int irq_create_mapping(struct i
 	}
 	pr_debug("irq: -> using host @%p\n", host);
 
-	/* Check if mapping already exist, if it does, call
-	 * host->ops->map() to update the flags
-	 */
+	/* Check if mapping already exists */
 	virq = irq_find_mapping(host, hwirq);
 	if (virq != NO_IRQ) {
 		pr_debug("irq: -> existing mapping on virq %d\n", virq);