drivers/base/container.c

   1 /*
   2  * System bus type for containers.
   3  *
   4  * Copyright (C) 2013, Intel Corporation
   5  * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/container.h>
  13
  14 #include "base.h"
  15
  16 #define CONTAINER_BUS_NAME      "container"
  17
  18 static int trivial_online(struct device *dev)
  19 {
  20         return 0;
  21 }
  22
  23 static int container_offline(struct device *dev)
  24 {
  25         struct container_dev *cdev = to_container_dev(dev);
  26
  27         return cdev->offline ? cdev->offline(cdev) : 0;
  28 }
  29
  30 struct bus_type container_subsys = {
  31         .name = CONTAINER_BUS_NAME,
  32         .dev_name = CONTAINER_BUS_NAME,
  33         .online = trivial_online,
  34         .offline = container_offline,
  35 };
  36
  37 void __init container_dev_init(void)
  38 {
  39         int ret;
  40
  41         ret = subsys_system_register(&container_subsys, NULL);
  42         if (ret)
  43                 pr_err("%s() failed: %d\n", __func__, ret);
  44 }