303 	struct device *cpu_dev, *dev_root;  in pseries_energy_init()  local
309 	dev_root = bus_get_dev_root(&cpu_subsys);  in pseries_energy_init()
310 	if (dev_root) {  in pseries_energy_init()
311 		err = device_create_file(dev_root, &attr_cpu_activate_hint_list);  in pseries_energy_init()
313 			err = device_create_file(dev_root, &attr_cpu_deactivate_hint_list);  in pseries_energy_init()
314 		put_device(dev_root);  in pseries_energy_init()
342 	struct device *cpu_dev, *dev_root;  in pseries_energy_cleanup()  local
348 	dev_root = bus_get_dev_root(&cpu_subsys);  in pseries_energy_cleanup()
349 	if (dev_root) {  in pseries_energy_cleanup()
350 		device_remove_file(dev_root, &attr_cpu_activate_hint_list);  in pseries_energy_cleanup()
351 		device_remove_file(dev_root, &attr_cpu_deactivate_hint_list);  in pseries_energy_cleanup()
352 		put_device(dev_root);  in pseries_energy_cleanup()