diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index c99c2180785f..d2de2a720a3d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -637,6 +637,8 @@ int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
  * amdgpu_vram_mgr_free_sgt - allocate and fill a sg table
  *
  * @adev: amdgpu device pointer
+ * @dev: device pointer
+ * @dir: data direction of resource to unmap
  * @sgt: sg table to free
  *
  * Free a previously allocate sg table.