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| author | Tony Lindgren <tony@atomide.com> | 2016-01-25 21:46:21 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2016-01-25 21:46:21 +0300 |
| commit | 7e3b1207705c10ada363bbc7d0235730ce1f5b79 (patch) | |
| tree | cd1eb567acb4e72c1bdfbe8b59746c73b8627ee5 /include/asm-generic/qspinlock.h | |
| parent | 143c6fe3a415edf2dde3f507b3a00998b4c4001e (diff) | |
| parent | 20437f79f6627a31752f422688a6047c25cefcf1 (diff) | |
| download | linux-7e3b1207705c10ada363bbc7d0235730ce1f5b79.tar.xz | |
Merge branch 'enable-devices' into omap-for-v4.5/fixes
Diffstat (limited to 'include/asm-generic/qspinlock.h')
| -rw-r--r-- | include/asm-generic/qspinlock.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/asm-generic/qspinlock.h b/include/asm-generic/qspinlock.h index e2aadbc7151f..39e1cb201b8e 100644 --- a/include/asm-generic/qspinlock.h +++ b/include/asm-generic/qspinlock.h @@ -12,8 +12,9 @@ * GNU General Public License for more details. * * (C) Copyright 2013-2015 Hewlett-Packard Development Company, L.P. + * (C) Copyright 2015 Hewlett-Packard Enterprise Development LP * - * Authors: Waiman Long <waiman.long@hp.com> + * Authors: Waiman Long <waiman.long@hpe.com> */ #ifndef __ASM_GENERIC_QSPINLOCK_H #define __ASM_GENERIC_QSPINLOCK_H @@ -62,7 +63,7 @@ static __always_inline int queued_spin_is_contended(struct qspinlock *lock) static __always_inline int queued_spin_trylock(struct qspinlock *lock) { if (!atomic_read(&lock->val) && - (atomic_cmpxchg(&lock->val, 0, _Q_LOCKED_VAL) == 0)) + (atomic_cmpxchg_acquire(&lock->val, 0, _Q_LOCKED_VAL) == 0)) return 1; return 0; } @@ -77,7 +78,7 @@ static __always_inline void queued_spin_lock(struct qspinlock *lock) { u32 val; - val = atomic_cmpxchg(&lock->val, 0, _Q_LOCKED_VAL); + val = atomic_cmpxchg_acquire(&lock->val, 0, _Q_LOCKED_VAL); if (likely(val == 0)) return; queued_spin_lock_slowpath(lock, val); @@ -93,7 +94,7 @@ static __always_inline void queued_spin_unlock(struct qspinlock *lock) /* * smp_mb__before_atomic() in order to guarantee release semantics */ - smp_mb__before_atomic_dec(); + smp_mb__before_atomic(); atomic_sub(_Q_LOCKED_VAL, &lock->val); } #endif |