From: Nick Piggin <npiggin@suse.de>
Date: Sat, 13 Oct 2007 01:06:55 +0000 (+0200)
Subject: x86: fix IO write barrier
X-Git-Tag: v2.6.24-rc1~1388
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4071c718555d955a35e9651f77086096ad87d498;p=pandora-kernel.git

x86: fix IO write barrier

wmb() on x86 must always include a barrier, because stores can go out of
order in many cases when dealing with devices (eg. WC memory).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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