From: Pravin B Shelar <pshelar@nicira.com>
Date: Tue, 18 Jun 2013 00:49:32 +0000 (-0700)
Subject: gre: Simplify gre protocol registration locking.
X-Git-Tag: v3.11-rc1~16^2~54^2~11
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=20fd4d1f04da07d09192ad8ad366a70d5125bfaf;p=pandora-kernel.git

gre: Simplify gre protocol registration locking.

Use cmpxchg() for atomic protocol registration which saves
code and data space.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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