From 0c8d087c04cdcef501064552149289866e53aa6c Mon Sep 17 00:00:00 2001
From: Wei Yongjun <weiyj.lk@gmail.com>
Date: Tue, 17 Dec 2013 10:42:09 +0800
Subject: [PATCH] xen-netback: fix some error return code

'err' is overwrited to 0 after maybe_pull_tail() call, so the error
code was not set if skb_partial_csum_set() call failed. Fix to return
error -EPROTO from those error handling case instead of 0.

Fixes: d52eb0d46f36 ('xen-netback: make sure skb linear area covers checksum field')
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
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