x86, asm: Fix a compilation issue with clang

[pandora-kernel.git] / lib / rwsem.c

diff --git a/lib/rwsem.c b/lib/rwsem.c
index cf0ad2a..19c5fa9 100644 (file)
--- 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;
                }