From: Will Deacon <will.deacon@arm.com>
Date: Fri, 3 Feb 2012 13:50:07 +0000 (+0100)
Subject: ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop
X-Git-Tag: v3.0.35-fsl~980
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8da8d564585f51ae3ead37099711cd50edab7b66;p=karo-tx-linux.git

ARM: 7317/1: irq: avoid NULL check in for_each_irq_desc loop

ARM unconditionally selects CONFIG_GENERIC_HARDIRQS, so the definition
of for_each_irq_desc will check that the desc is non-NULL anyway.

This patch removes a redundant check from the IRQ migration code.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index de3dcab8610b..8cec6246dd1d 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -185,10 +185,7 @@ void migrate_irqs(void)
 	local_irq_save(flags);
 
 	for_each_irq_desc(i, desc) {
-		bool affinity_broken = false;
-
-		if (!desc)
-			continue;
+		bool affinity_broken;
 
 		raw_spin_lock(&desc->lock);
 		affinity_broken = migrate_one_irq(desc);