1// SPDX-License-Identifier: GPL-2.0-only
2#include <linux/kernel.h>
3#include <linux/module.h>
4#include <linux/of.h>
5
6#include "notifier-error-inject.h"
7
8static int priority;
9module_param(priority, int, 0);
10MODULE_PARM_DESC(priority, "specify OF reconfig notifier priority");
11
12static struct notifier_err_inject reconfig_err_inject = {
13 .actions = {
14 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ATTACH_NODE) },
15 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_DETACH_NODE) },
16 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ADD_PROPERTY) },
17 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_REMOVE_PROPERTY) },
18 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_UPDATE_PROPERTY) },
19 {}
20 }
21};
22
23static struct dentry *dir;
24
25static int err_inject_init(void)
26{
27 int err;
28
29 dir = notifier_err_inject_init(name: "OF-reconfig",
30 parent: notifier_err_inject_dir, err_inject: &reconfig_err_inject, priority);
31 if (IS_ERR(ptr: dir))
32 return PTR_ERR(ptr: dir);
33
34 err = of_reconfig_notifier_register(&reconfig_err_inject.nb);
35 if (err)
36 debugfs_remove_recursive(dentry: dir);
37
38 return err;
39}
40
41static void err_inject_exit(void)
42{
43 of_reconfig_notifier_unregister(&reconfig_err_inject.nb);
44 debugfs_remove_recursive(dentry: dir);
45}
46
47module_init(err_inject_init);
48module_exit(err_inject_exit);
49
50MODULE_DESCRIPTION("OF reconfig notifier error injection module");
51MODULE_LICENSE("GPL");
52MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
53

source code of linux/lib/of-reconfig-notifier-error-inject.c