diff options
| -rw-r--r-- | arch/x86/include/asm/spinlock.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h index 625660f8a2fc..7050d864f520 100644 --- a/arch/x86/include/asm/spinlock.h +++ b/arch/x86/include/asm/spinlock.h | |||
| @@ -183,10 +183,10 @@ static __always_inline void arch_spin_lock_flags(arch_spinlock_t *lock, | |||
| 183 | 183 | ||
| 184 | static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) | 184 | static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) |
| 185 | { | 185 | { |
| 186 | __ticket_t head = ACCESS_ONCE(lock->tickets.head); | 186 | __ticket_t head = READ_ONCE(lock->tickets.head); |
| 187 | 187 | ||
| 188 | for (;;) { | 188 | for (;;) { |
| 189 | struct __raw_tickets tmp = ACCESS_ONCE(lock->tickets); | 189 | struct __raw_tickets tmp = READ_ONCE(lock->tickets); |
| 190 | /* | 190 | /* |
| 191 | * We need to check "unlocked" in a loop, tmp.head == head | 191 | * We need to check "unlocked" in a loop, tmp.head == head |
| 192 | * can be false positive because of overflow. | 192 | * can be false positive because of overflow. |
