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-rw-r--r--lib/rwsem.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/lib/rwsem.c b/lib/rwsem.c
index cf0ad2ad19f5..19c5fa95e0b4 100644
--- a/lib/rwsem.c
+++ b/lib/rwsem.c
@@ -223,7 +223,9 @@ struct rw_semaphore __sched *rwsem_down_write_failed(struct rw_semaphore *sem)
count = RWSEM_ACTIVE_WRITE_BIAS;
if (!list_is_singular(&sem->wait_list))
count += RWSEM_WAITING_BIAS;
- if (cmpxchg(&sem->count, RWSEM_WAITING_BIAS, count) ==
+
+ if (sem->count == RWSEM_WAITING_BIAS &&
+ cmpxchg(&sem->count, RWSEM_WAITING_BIAS, count) ==
RWSEM_WAITING_BIAS)
break;
}