[PATCH] keys: Delete an unnecessary check before the function call "key_put"

[SF Markus Elfring]

From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 24 Jun 2015 15:16:35 +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@xxxxxxxxxxxxxxxxxxxxx>
---
 security/keys/process_keys.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index bd536cb..225dd08 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -242,9 +242,7 @@ int install_session_keyring_to_cred(struct cred *cred, struct key *keyring)
 	old = cred->session_keyring;
 	rcu_assign_pointer(cred->session_keyring, keyring);
 
-	if (old)
-		key_put(old);
-
+	key_put(old);
 	return 0;
 }
 
-- 
2.4.4

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