drm_gem_handle_create
rv = drm_gem_handle_create(file, &bo->gem_obj, handle);
rv = drm_gem_handle_create(file, &fb->planes[0]->gem_obj, handle);
int drm_gem_handle_create(struct drm_file *file_priv,
EXPORT_SYMBOL(drm_gem_handle_create);
ret = drm_gem_handle_create(file_priv, obj, &handle);