drm/ttm: use new move interface for known system->ttm moves

In all 3 drivers there is a case where the driver knows the
bo is in SYSTEM so don't call the api that checks that.
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201019071314.1671485-4-airlied@gmail.com

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

@@ -601,11 +601,11 @@ static int amdgpu_move_ram_vram(struct ttm_buffer_object *bo, bool evict,
 	}
 
 	/* move/bind old memory to GTT space */
-	r = ttm_bo_move_ttm(bo, ctx, &tmp_mem);
+	r = ttm_bo_move_to_new_tt_mem(bo, ctx, &tmp_mem);
 	if (unlikely(r)) {
 		goto out_cleanup;
 	}
-
+	ttm_bo_assign_mem(bo, &tmp_mem);
 	/* copy to VRAM */
 	r = amdgpu_move_blit(bo, evict, new_mem, old_mem);
 	if (unlikely(r)) {

drivers/gpu/drm/nouveau/nouveau_bo.c

@@ -927,10 +927,11 @@ nouveau_bo_move_flips(struct ttm_buffer_object *bo, bool evict,
 	if (ret)
 		return ret;
 
-	ret = ttm_bo_move_ttm(bo, ctx, &tmp_reg);
+	ret = ttm_bo_move_to_new_tt_mem(bo, ctx, &tmp_reg);
 	if (ret)
 		goto out;
 
+	ttm_bo_assign_mem(bo, &tmp_reg);
 	ret = nouveau_bo_move_m2mf(bo, true, ctx, new_reg);
 	if (ret)
 		goto out;

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -275,10 +275,11 @@ static int radeon_move_ram_vram(struct ttm_buffer_object *bo,
 	if (unlikely(r)) {
 		return r;
 	}
-	r = ttm_bo_move_ttm(bo, ctx, &tmp_mem);
+	r = ttm_bo_move_to_new_tt_mem(bo, ctx, &tmp_mem);
 	if (unlikely(r)) {
 		goto out_cleanup;
 	}
+	ttm_bo_assign_mem(bo, &tmp_mem);
 	r = radeon_move_blit(bo, true, new_mem, old_mem);
 	if (unlikely(r)) {
 		goto out_cleanup;

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -64,6 +64,7 @@ int ttm_bo_move_to_new_tt_mem(struct ttm_buffer_object *bo,
 
 	return 0;
 }
+EXPORT_SYMBOL(ttm_bo_move_to_new_tt_mem);
 
 static int ttm_bo_move_to_system(struct ttm_buffer_object *bo,
 				 struct ttm_operation_ctx *ctx)