drivers/base/container.c

   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 }