linux-kernel - [PATCH v2 5/6] net-PPP: Delete an unnecessary assignment in mppe

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Message-ID: <5480DDC1.6040101@users.sourceforge.net>
Date:	Thu, 04 Dec 2014 23:18:41 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Paul Mackerras <paulus@...ba.org>, linux-ppp@...r.kernel.org,
	netdev@...r.kernel.org, Eric Dumazet <eric.dumazet@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH v2 5/6] net-PPP: Delete an unnecessary assignment in mppe_alloc()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 4 Dec 2014 22:33:34 +0100

The data structure element "arc4" was assigned a null pointer by the
mppe_alloc() function if a previous function call "crypto_alloc_blkcipher"
failed. This assignment became unnecessary with previous source
code adjustments.

Let us delete it from the affected implementation because the element "arc4"
will not be accessible outside the function after the detected
allocation failure.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/net/ppp/ppp_mppe.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ppp/ppp_mppe.c b/drivers/net/ppp/ppp_mppe.c
index c82198f..b7db4b1 100644
--- a/drivers/net/ppp/ppp_mppe.c
+++ b/drivers/net/ppp/ppp_mppe.c
@@ -204,10 +204,8 @@ static void *mppe_alloc(unsigned char *options, int optlen)
 
 
 	state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
-	if (IS_ERR(state->arc4)) {
-		state->arc4 = NULL;
+	if (IS_ERR(state->arc4))
 		goto out_free;
-	}
 
 	state->sha1 = crypto_alloc_hash("sha1", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(state->sha1)) {
-- 
2.1.3

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