drm/rockchip: Use .dumb_map_offset and .dumb_destroy defaults

This driver can use the drm_driver.dumb_destroy and
drm_driver.dumb_map_offset defaults, so no need to set them.

Cc: Mark Yao <[e-mail]>
Signed-off-by: Noralf Trønnes <[e-mail]>
Reviewed-by: Sean Paul <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/gpu/drm/rockchip/rockchip_drm_drv.c

···
 	.gem_vm_ops		= &drm_gem_cma_vm_ops,
 	.gem_free_object_unlocked = rockchip_gem_free_object,
 	.dumb_create		= rockchip_gem_dumb_create,
-	.dumb_map_offset	= rockchip_gem_dumb_map_offset,
-	.dumb_destroy		= drm_gem_dumb_destroy,
 	.prime_handle_to_fd	= drm_gem_prime_handle_to_fd,
 	.prime_fd_to_handle	= drm_gem_prime_fd_to_handle,
 	.gem_prime_import	= drm_gem_prime_import,

drivers/gpu/drm/rockchip/rockchip_drm_gem.c

···
 	return ERR_PTR(ret);
 }
 
-int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
-				 struct drm_device *dev, uint32_t handle,
-				 uint64_t *offset)
-{
-	struct drm_gem_object *obj;
-	int ret;
-
-	obj = drm_gem_object_lookup(file_priv, handle);
-	if (!obj) {
-		DRM_ERROR("failed to lookup gem object.\n");
-		return -EINVAL;
-	}
-
-	ret = drm_gem_create_mmap_offset(obj);
-	if (ret)
-		goto out;
-
-	*offset = drm_vma_node_offset_addr(&obj->vma_node);
-	DRM_DEBUG_KMS("offset = 0x%llx\n", *offset);
-
-out:
-	drm_gem_object_unreference_unlocked(obj);
-
-	return 0;
-}
-
 /*
  * rockchip_gem_dumb_create - (struct drm_driver)->dumb_create callback
  * function

drivers/gpu/drm/rockchip/rockchip_drm_gem.h

···
 int rockchip_gem_dumb_create(struct drm_file *file_priv,
 			     struct drm_device *dev,
 			     struct drm_mode_create_dumb *args);
-int rockchip_gem_dumb_map_offset(struct drm_file *file_priv,
-				 struct drm_device *dev, uint32_t handle,
-				 uint64_t *offset);
 #endif /* _ROCKCHIP_DRM_GEM_H */