1#include <linux/kernel.h>
2#include <linux/module.h>
3#include <linux/suspend.h>
4
5#include "notifier-error-inject.h"
6
7static int priority;
8module_param(priority, int, 0);
9MODULE_PARM_DESC(priority, "specify PM notifier priority");
10
11static struct notifier_err_inject pm_notifier_err_inject = {
12 .actions = {
13 { NOTIFIER_ERR_INJECT_ACTION(PM_HIBERNATION_PREPARE) },
14 { NOTIFIER_ERR_INJECT_ACTION(PM_SUSPEND_PREPARE) },
15 { NOTIFIER_ERR_INJECT_ACTION(PM_RESTORE_PREPARE) },
16 {}
17 }
18};
19
20static struct dentry *dir;
21
22static int err_inject_init(void)
23{
24 int err;
25
26 dir = notifier_err_inject_init("pm", notifier_err_inject_dir,
27 &pm_notifier_err_inject, priority);
28 if (IS_ERR(dir))
29 return PTR_ERR(dir);
30
31 err = register_pm_notifier(&pm_notifier_err_inject.nb);
32 if (err)
33 debugfs_remove_recursive(dir);
34
35 return err;
36}
37
38static void err_inject_exit(void)
39{
40 unregister_pm_notifier(&pm_notifier_err_inject.nb);
41 debugfs_remove_recursive(dir);
42}
43
44module_init(err_inject_init);
45module_exit(err_inject_exit);
46
47MODULE_DESCRIPTION("PM notifier error injection module");
48MODULE_LICENSE("GPL");
49MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
50