linux-kernel - [PATCH] kernel-sched: Delete an unnecessary check before unregister_sysctl

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Date:	Sat, 04 Jul 2015 09:13:02 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	LKML <linux-kernel@...r.kernel.org>
CC:	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] kernel-sched: Delete an unnecessary check before unregister_sysctl_table()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 4 Jul 2015 09:06:32 +0200

The unregister_sysctl_table() 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>
---
 kernel/sched/core.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index b803e1b..4756d1c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5298,8 +5298,7 @@ static void register_sched_domain_sysctl(void)
 /* may be called multiple times per register */
 static void unregister_sched_domain_sysctl(void)
 {
-	if (sd_sysctl_header)
-		unregister_sysctl_table(sd_sysctl_header);
+	unregister_sysctl_table(sd_sysctl_header);
 	sd_sysctl_header = NULL;
 	if (sd_ctl_dir[0].child)
 		sd_free_ctl_entry(&sd_ctl_dir[0].child);
-- 
2.4.5

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