linux-kernel - [PATCH] f2fs crypto: Delete an unnecessary check before the function call "key

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Date:	Fri, 26 Jun 2015 17:33:22 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Changman Lee <cm224.lee@...sung.com>,
	Jaegeuk Kim <jaegeuk@...nel.org>,
	linux-f2fs-devel@...ts.sourceforge.net
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] f2fs crypto: Delete an unnecessary check before the function
 call "key_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Fri, 26 Jun 2015 17:28:55 +0200

The key_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>
---
 fs/f2fs/crypto_key.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/f2fs/crypto_key.c b/fs/f2fs/crypto_key.c
index 95b8f93..9f77de2 100644
--- a/fs/f2fs/crypto_key.c
+++ b/fs/f2fs/crypto_key.c
@@ -92,8 +92,7 @@ static void f2fs_free_crypt_info(struct f2fs_crypt_info *ci)
 	if (!ci)
 		return;
 
-	if (ci->ci_keyring_key)
-		key_put(ci->ci_keyring_key);
+	key_put(ci->ci_keyring_key);
 	crypto_free_ablkcipher(ci->ci_ctfm);
 	kmem_cache_free(f2fs_crypt_info_cachep, ci);
 }
-- 
2.4.4

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