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authorChris Metcalf <cmetcalf@tilera.com>2011-02-25 14:46:38 +0100
committerChris Metcalf <cmetcalf@tilera.com>2011-02-25 14:46:38 +0100
commitd356b595e5a95c0c2305ec0a7d1cdb3e26f57716 (patch)
tree8256f0460d6ff5f50d57590a53c10336b66cb241 /arch/tile/include
parenttile: Select GENERIC_HARDIRQS_NO_DEPRECATED (diff)
downloadlinux-d356b595e5a95c0c2305ec0a7d1cdb3e26f57716.tar.xz
linux-d356b595e5a95c0c2305ec0a7d1cdb3e26f57716.zip
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>
Diffstat (limited to 'arch/tile/include')
-rw-r--r--arch/tile/include/asm/atomic.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/tile/include/asm/atomic.h b/arch/tile/include/asm/atomic.h
index b8c49f98a44c..75a16028a952 100644
--- a/arch/tile/include/asm/atomic.h
+++ b/arch/tile/include/asm/atomic.h
@@ -32,7 +32,7 @@
*/
static inline int atomic_read(const atomic_t *v)
{
- return v->counter;
+ return ACCESS_ONCE(v->counter);
}
/**