linux-kernel - [PATCH 1/1] bcache: Deletion of an unnecessary check before the function call "kobject

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Date:	Wed, 19 Nov 2014 21:34:20 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Kent Overstreet <kmo@...erainc.com>, Neil Brown <neilb@...e.de>,
	linux-bcache@...r.kernel.org
CC:	linux-raid@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/1] bcache: Deletion of an unnecessary check before the function
 call "kobject_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 19 Nov 2014 21:25:39 +0100

The kobject_put() 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>
---
 drivers/md/bcache/super.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index d4713d0..1443c55 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -2076,8 +2076,7 @@ static void bcache_exit(void)
 {
 	bch_debug_exit();
 	bch_request_exit();
-	if (bcache_kobj)
-		kobject_put(bcache_kobj);
+	kobject_put(bcache_kobj);
 	if (bcache_wq)
 		destroy_workqueue(bcache_wq);
 	if (bcache_major)
-- 
2.1.3

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