From: Chris Metcalf <cmetcalf@tilera.com>
Date: Fri, 25 Feb 2011 13:46:38 +0000 (-0500)
Subject: arch/tile: Fix atomic_read() definition to use ACCESS_ONCE
X-Git-Tag: v2.6.39-rc1~431^2~22
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d356b595e5a95c0c2305ec0a7d1cdb3e26f57716;p=pandora-kernel.git

arch/tile: Fix atomic_read() definition to use ACCESS_ONCE

This adds the volatile cast which forces the compiler to emit the load.
Suggested by Peter Zijlstra <peterz@infradead.org>.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
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