[tip:sched/core] sched, sysctl: Delete an unnecessary check before unregister_sysctl_table()

[tip-bot for Markus Elfring]

Commit-ID:  781b0203423c228b100aaaf169c77b2b556f8a49
Gitweb:     http://git.kernel.org/tip/781b0203423c228b100aaaf169c77b2b556f8a49
Author:     Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
AuthorDate: Sat, 4 Jul 2015 09:06:32 +0200
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Mon, 3 Aug 2015 12:21:21 +0200

sched, sysctl: Delete an unnecessary check before unregister_sysctl_table()

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@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/5597877E.3060503@xxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 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 78b4bad10..48be7dc 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5311,8 +5311,7 @@ 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);
--
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