netdev - [PATCH] esp4: fix error return code in esp

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Message-ID: <CAPgLHd9zivXBfC5DvuKwr+C3vX+-kJjqSrLRRyAvk=nmBvGaaQ@mail.gmail.com>
Date:	Sun, 14 Apr 2013 09:49:03 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	davem@...emloft.net, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net
Cc:	yongjun_wei@...ndmicro.com.cn, netdev@...r.kernel.org
Subject: [PATCH] esp4: fix error return code in esp_output()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Fix to return a negative error code from the error handling
case instead of 0, as returned elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 net/ipv4/esp4.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c
index 3b4f0cd..4cfe34d 100644
--- a/net/ipv4/esp4.c
+++ b/net/ipv4/esp4.c
@@ -139,8 +139,6 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 
 	/* skb is pure payload to encrypt */
 
-	err = -ENOMEM;
-
 	esp = x->data;
 	aead = esp->aead;
 	alen = crypto_aead_authsize(aead);
@@ -176,8 +174,10 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
 	}
 
 	tmp = esp_alloc_tmp(aead, nfrags + sglists, seqhilen);
-	if (!tmp)
+	if (!tmp) {
+		err = -ENOMEM;
 		goto error;
+	}
 
 	seqhi = esp_tmp_seqhi(tmp);
 	iv = esp_tmp_iv(aead, tmp, seqhilen);

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