linux/drivers/base/container.c
Greg Kroah-Hartman dedb868994 driver core: container: make container_subsys const
Now that the driver core can properly handle constant struct bus_type,
move the container_subsys variable to be a constant structure as well,
placing it into read-only memory which can not be modified at runtime.

Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Link: https://lore.kernel.org/r/2023121919-chatter-grumbling-9ef3@gregkh
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-12-21 13:56:10 +01:00

42 lines
820 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* System bus type for containers.
*
* Copyright (C) 2013, Intel Corporation
* Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
*/
#include <linux/container.h>
#include "base.h"
#define CONTAINER_BUS_NAME "container"
static int trivial_online(struct device *dev)
{
return 0;
}
static int container_offline(struct device *dev)
{
struct container_dev *cdev = to_container_dev(dev);
return cdev->offline ? cdev->offline(cdev) : 0;
}
const struct bus_type container_subsys = {
.name = CONTAINER_BUS_NAME,
.dev_name = CONTAINER_BUS_NAME,
.online = trivial_online,
.offline = container_offline,
};
void __init container_dev_init(void)
{
int ret;
ret = subsys_system_register(&container_subsys, NULL);
if (ret)
pr_err("%s() failed: %d\n", __func__, ret);
}