drm/amdgpu: Replace rcu_assign_pointer() with RCU_INIT_POINTER()
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>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 50e95ab..ba9c042 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -198,7 +198,7 @@
/* 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);