[PATCH] drm/amdgpu: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

[Muhammad Falak R Wani]

The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structre. It is always
safe to use RCU_INIT_POINTER() to NULL a pointer, instead of
rcu_assign_pointer().
This results in slightly smaller/faster code.

The following semantic patch was used:
<smpl>

@@
@@

- rcu_assign_pointer
+ RCU_INIT_POINTER
  (..., NULL)

</smpl>

Signed-off-by: Muhammad Falak R Wani <falakre...@gmail.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index d81f1f4..4500ff1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -198,7 +198,7 @@ void amdgpu_fence_process(struct amdgpu_ring *ring)
 
                /* There is always exactly one thread signaling this fence slot 
*/
                fence = rcu_dereference_protected(*ptr, 1);
-               rcu_assign_pointer(*ptr, NULL);
+               RCU_INIT_POINTER(*ptr, NULL);
 
                BUG_ON(!fence);
 
-- 
1.9.1