diff options
| -rw-r--r-- | arch/x86/include/asm/rwsem.h | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h index 606ede126972..5bf5e04e497f 100644 --- a/arch/x86/include/asm/rwsem.h +++ b/arch/x86/include/asm/rwsem.h @@ -216,9 +216,8 @@ static inline void __up_write(struct rw_semaphore *sem) rwsem_count_t tmp; asm volatile("# beginning __up_write\n\t" LOCK_PREFIX " xadd %1,(%2)\n\t" - /* tries to transition - 0xffff0001 -> 0x00000000 */ - " jz 1f\n" + /* subtracts 0xffff0001, returns the old value */ + " jns 1f\n\t" " call call_rwsem_wake\n" "1:\n\t" "# ending __up_write\n" |