linux-kernel - [PATCH] s390/process: Delete an unnecessary check before the function call "kfree"

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Message-ID: <558B1799.8040003@users.sourceforge.net>
Date:	Wed, 24 Jun 2015 22:48:25 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Martin Schwidefsky <schwidefsky@...ibm.com>,
	linux390@...ibm.com, linux-s390@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] s390/process: Delete an unnecessary check before the function
 call "kfree"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 24 Jun 2015 22:40:30 +0200

The kfree() function tests whether its argument is NULL and then
returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 arch/s390/kernel/process.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index dc5edc2..22e6448 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -81,8 +81,7 @@ void release_thread(struct task_struct *dead_task)
 
 void arch_release_task_struct(struct task_struct *tsk)
 {
-	if (tsk->thread.vxrs)
-		kfree(tsk->thread.vxrs);
+	kfree(tsk->thread.vxrs);
 }
 
 int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
-- 
2.4.4

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