diff options
Diffstat (limited to 'arch/ia64/include/asm/spinlock.h')
| -rw-r--r-- | arch/ia64/include/asm/spinlock.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h index afd0b3121b4c..5f620e66384e 100644 --- a/arch/ia64/include/asm/spinlock.h +++ b/arch/ia64/include/asm/spinlock.h @@ -73,6 +73,8 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock) { unsigned short *p = (unsigned short *)&lock->lock + 1, tmp; + /* This could be optimised with ARCH_HAS_MMIOWB */ + mmiowb(); asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p)); WRITE_ONCE(*p, (tmp + 2) & ~1); } |