radeon_backend_func  626 drivers/gpu/drm/radeon/radeon_ttm.c static struct ttm_backend_func radeon_backend_func = {
radeon_backend_func  650 drivers/gpu/drm/radeon/radeon_ttm.c 	gtt->ttm.ttm.func = &radeon_backend_func;
radeon_backend_func  661 drivers/gpu/drm/radeon/radeon_ttm.c 	if (!ttm || ttm->func != &radeon_backend_func)