drm/amdgpu: Remove amdgpu_device arg from free_sgt api (v2)

Currently callers have to provide handle of amdgpu_device,
which is not used by the implementation. It is unlikely this
parameter will become useful in future, thus removing it

v2: squash in unused variable fix
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c

@@ -321,17 +321,12 @@ static void amdgpu_dma_buf_unmap(struct dma_buf_attachment *attach,
 				 struct sg_table *sgt,
 				 enum dma_data_direction dir)
 {
-	struct dma_buf *dma_buf = attach->dmabuf;
-	struct drm_gem_object *obj = dma_buf->priv;
-	struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj);
-	struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
-
 	if (sgt->sgl->page_link) {
 		dma_unmap_sgtable(attach->dev, sgt, dir, 0);
 		sg_free_table(sgt);
 		kfree(sgt);
 	} else {
-		amdgpu_vram_mgr_free_sgt(adev, attach->dev, dir, sgt);
+		amdgpu_vram_mgr_free_sgt(attach->dev, dir, sgt);
 	}
 }
 

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h

@@ -117,8 +117,7 @@ int amdgpu_vram_mgr_alloc_sgt(struct amdgpu_device *adev,
 			      struct device *dev,
 			      enum dma_data_direction dir,
 			      struct sg_table **sgt);
-void amdgpu_vram_mgr_free_sgt(struct amdgpu_device *adev,
-			      struct device *dev,
+void amdgpu_vram_mgr_free_sgt(struct device *dev,
 			      enum dma_data_direction dir,
 			      struct sg_table *sgt);
 uint64_t amdgpu_vram_mgr_usage(struct ttm_resource_manager *man);

drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c

@@ -731,15 +731,13 @@ 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.
  */
-void amdgpu_vram_mgr_free_sgt(struct amdgpu_device *adev,
-			      struct device *dev,
+void amdgpu_vram_mgr_free_sgt(struct device *dev,
 			      enum dma_data_direction dir,
 			      struct sg_table *sgt)
 {