diff options
Diffstat (limited to 'arch/arm64/include/asm/spinlock.h')
| -rw-r--r-- | arch/arm64/include/asm/spinlock.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/arm64/include/asm/spinlock.h b/arch/arm64/include/asm/spinlock.h index cee128732435..0f08ba5cfb33 100644 --- a/arch/arm64/include/asm/spinlock.h +++ b/arch/arm64/include/asm/spinlock.h @@ -140,10 +140,11 @@ static inline int arch_write_trylock(arch_rwlock_t *rw) unsigned int tmp; asm volatile( - " ldaxr %w0, %1\n" - " cbnz %w0, 1f\n" + "1: ldaxr %w0, %1\n" + " cbnz %w0, 2f\n" " stxr %w0, %w2, %1\n" - "1:\n" + " cbnz %w0, 1b\n" + "2:\n" : "=&r" (tmp), "+Q" (rw->lock) : "r" (0x80000000) : "memory"); @@ -209,11 +210,12 @@ static inline int arch_read_trylock(arch_rwlock_t *rw) unsigned int tmp, tmp2 = 1; asm volatile( - " ldaxr %w0, %2\n" + "1: ldaxr %w0, %2\n" " add %w0, %w0, #1\n" - " tbnz %w0, #31, 1f\n" + " tbnz %w0, #31, 2f\n" " stxr %w1, %w0, %2\n" - "1:\n" + " cbnz %w1, 1b\n" + "2:\n" : "=&r" (tmp), "+r" (tmp2), "+Q" (rw->lock) : : "memory"); |