[PATCH v8 1/6] drm: amdgpu: Allow NULL pointers at amdgpu_vm_put_task_info()

["André Almeida" <andrealmeid@igalia.com>]

Allow NULL pointers at amdgpu_vm_put_task_info() as it common practice
for "put" or "free" functions. This avoid an extra check for NULL for
callers.

Signed-off-by: André Almeida <andrealmeid@igalia.com>
---
v8: New patch
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index 3911c78f8282..dadf5633476c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2447,6 +2447,9 @@ amdgpu_vm_get_vm_from_pasid(struct amdgpu_device *adev, u32 pasid)
  */
 void amdgpu_vm_put_task_info(struct amdgpu_task_info *task_info)
 {
+	if (unlikely(ZERO_OR_NULL_PTR(task_info)))
+		return;
+
 	kref_put(&task_info->refcount, amdgpu_vm_destroy_task_info);
 }
 
-- 
2.49.0