From: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Date: Wed, 3 Dec 2014 02:29:40 +0000 (+0800)
Subject: ipv6: remove useless spin_lock/spin_unlock
X-Git-Tag: omap-for-v3.19/fixes-rc1~125^2~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=86fe8f892013228eef324c42e77c6b54b0bbc6dd;p=pandora-kernel.git

ipv6: remove useless spin_lock/spin_unlock

xchg is atomic, so there is no necessary to use spin_lock/spin_unlock
to protect it. At last, remove the redundant
opt = xchg(&inet6_sk(sk)->opt, opt); statement.

Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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