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| author | Ingo Molnar <mingo@kernel.org> | 2016-07-27 12:35:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-27 12:35:35 +0200 |
| commit | df15929f8f5c69e987c31bf016eca4a38dba46f0 (patch) | |
| tree | cfb5fe5e8ebff4cabd70557a304f355546943cc9 /include/asm-generic/qspinlock.h | |
| parent | efaad554b4ffae1840a2759e09e21325ddbc8b05 (diff) | |
| parent | 37e13a1ebe32c4fbfbdb5413f42eb6e71d8b28a4 (diff) | |
Merge branch 'linus' into x86/microcode, to pick up merge window changes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/asm-generic/qspinlock.h')
| -rw-r--r-- | include/asm-generic/qspinlock.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/include/asm-generic/qspinlock.h b/include/asm-generic/qspinlock.h index 05f05f17a7c2..9f0681bf1e87 100644 --- a/include/asm-generic/qspinlock.h +++ b/include/asm-generic/qspinlock.h @@ -111,10 +111,9 @@ static __always_inline void queued_spin_lock(struct qspinlock *lock) static __always_inline void queued_spin_unlock(struct qspinlock *lock) { /* - * smp_mb__before_atomic() in order to guarantee release semantics + * unlock() needs release semantics: */ - smp_mb__before_atomic(); - atomic_sub(_Q_LOCKED_VAL, &lock->val); + (void)atomic_sub_return_release(_Q_LOCKED_VAL, &lock->val); } #endif |