linux-kernel - [PATCH 3/3] net-PPP: Delete an unnecessary assignment

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Date:	Sun, 30 Nov 2014 17:47:49 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Paul Mackerras <paulus@...ba.org>, linux-ppp@...r.kernel.org,
	netdev@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 3/3] net-PPP: Delete an unnecessary assignment

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sun, 30 Nov 2014 17:17:36 +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 962c1a0..d913bc9 100644
--- a/drivers/net/ppp/ppp_mppe.c
+++ b/drivers/net/ppp/ppp_mppe.c
@@ -205,10 +205,8 @@ 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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