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| author | Chris Metcalf <cmetcalf@tilera.com> | 2011-02-25 14:46:38 +0100 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2011-02-25 14:46:38 +0100 |
| commit | d356b595e5a95c0c2305ec0a7d1cdb3e26f57716 (patch) | |
| tree | 8256f0460d6ff5f50d57590a53c10336b66cb241 | |
| parent | tile: Select GENERIC_HARDIRQS_NO_DEPRECATED (diff) | |
| download | linux-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>
| -rw-r--r-- | 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 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); } /** |