linux-kernel - [PATCH] kernel/sched/core.c: need return NULL when BUG() is defined as empty.

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Message-ID: <5199D565.4070307@asianux.com>
Date:	Mon, 20 May 2013 15:48:53 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	"mingo@...hat.com" <mingo@...hat.com>, peterz@...radead.org
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH] kernel/sched/core.c: need return NULL when BUG() is defined
 as empty.


When neither CONFIG_BUG nor HAVE_ARCH_BUG is defined, need let function
return failure value ('NULL') instead of random value.

It is generated by randconfig with MMU for arm s5pv210 with
EXTRA_CFALGS=-W.

The related warnings:
  kernel/sched/core.c:2353:1: warning: control reaches end of non-void function [-Wreturn-type]

Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 kernel/sched/core.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9ff7744..94ef8ff 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2350,6 +2350,7 @@ pick_next_task(struct rq *rq)
 	}
 
 	BUG(); /* the idle class will always have a runnable task */
+	return NULL;
 }
 
 /*
-- 
1.7.7.6
--
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