1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * System bus type for containers. 4 * 5 * Copyright (C) 2013, Intel Corporation 6 * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com> 7 */ 8 9 #include <linux/container.h> 10 11 #include "base.h" 12 13 #define CONTAINER_BUS_NAME "container" 14 15 static int trivial_online(struct device *dev) 16 { 17 return 0; 18 } 19 20 static int container_offline(struct device *dev) 21 { 22 struct container_dev *cdev = to_container_dev(dev); 23 24 return cdev->offline ? cdev->offline(cdev) : 0; 25 } 26 27 struct bus_type container_subsys = { 28 .name = CONTAINER_BUS_NAME, 29 .dev_name = CONTAINER_BUS_NAME, 30 .online = trivial_online, 31 .offline = container_offline, 32 }; 33 34 void __init container_dev_init(void) 35 { 36 int ret; 37 38 ret = subsys_system_register(&container_subsys, NULL); 39 if (ret) 40 pr_err("%s() failed: %d\n", __func__, ret); 41 } 42