diff options
Diffstat (limited to 'arch/arm64/include/asm/atomic_ll_sc.h')
| -rw-r--r-- | arch/arm64/include/asm/atomic_ll_sc.h | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/arm64/include/asm/atomic_ll_sc.h b/arch/arm64/include/asm/atomic_ll_sc.h index f89f1e4ba577..c02684d1eab3 100644 --- a/arch/arm64/include/asm/atomic_ll_sc.h +++ b/arch/arm64/include/asm/atomic_ll_sc.h @@ -101,14 +101,13 @@ __LL_SC_PREFIX(atomic_cmpxchg(atomic_t *ptr, int old, int new)) asm volatile("// atomic_cmpxchg\n" "1: ldxr %w1, %2\n" -" cmp %w1, %w3\n" -" b.ne 2f\n" +" eor %w0, %w1, %w3\n" +" cbnz %w0, 2f\n" " stxr %w0, %w4, %2\n" " cbnz %w0, 1b\n" "2:" : "=&r" (tmp), "=&r" (oldval), "+Q" (ptr->counter) - : "Ir" (old), "r" (new) - : "cc"); + : "Lr" (old), "r" (new)); smp_mb(); return oldval; @@ -179,14 +178,13 @@ __LL_SC_PREFIX(atomic64_cmpxchg(atomic64_t *ptr, long old, long new)) asm volatile("// atomic64_cmpxchg\n" "1: ldxr %1, %2\n" -" cmp %1, %3\n" -" b.ne 2f\n" +" eor %0, %1, %3\n" +" cbnz %w0, 2f\n" " stxr %w0, %4, %2\n" " cbnz %w0, 1b\n" "2:" : "=&r" (res), "=&r" (oldval), "+Q" (ptr->counter) - : "Ir" (old), "r" (new) - : "cc"); + : "Lr" (old), "r" (new)); smp_mb(); return oldval; |