Messages in this thread Patch in this message | | | From | Chris Metcalf <> | Date | Fri, 25 Feb 2011 08:46:38 -0500 | Subject | [PATCH] arch/tile: Fix atomic_read() definition to use ACCESS_ONCE |
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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> --- arch/tile/include/asm/atomic.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/tile/include/asm/atomic.h b/arch/tile/include/asm/atomic.h index b8c49f9..75a1602 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); } /** -- 1.6.5.2
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