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