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1// SPDX-License-Identifier: GPL-2.0-only2#include <linux/kernel.h>3#include <linux/module.h>4#include <linux/suspend.h>5 6#include "notifier-error-inject.h"7 8static int priority;9module_param(priority, int, 0);10MODULE_PARM_DESC(priority, "specify PM notifier priority");11 12static struct notifier_err_inject pm_notifier_err_inject = {13 .actions = {14 { NOTIFIER_ERR_INJECT_ACTION(PM_HIBERNATION_PREPARE) },15 { NOTIFIER_ERR_INJECT_ACTION(PM_SUSPEND_PREPARE) },16 { NOTIFIER_ERR_INJECT_ACTION(PM_RESTORE_PREPARE) },17 {}18 }19};20 21static struct dentry *dir;22 23static int err_inject_init(void)24{25 int err;26 27 dir = notifier_err_inject_init("pm", notifier_err_inject_dir,28 &pm_notifier_err_inject, priority);29 if (IS_ERR(dir))30 return PTR_ERR(dir);31 32 err = register_pm_notifier(&pm_notifier_err_inject.nb);33 if (err)34 debugfs_remove_recursive(dir);35 36 return err;37}38 39static void err_inject_exit(void)40{41 unregister_pm_notifier(&pm_notifier_err_inject.nb);42 debugfs_remove_recursive(dir);43}44 45module_init(err_inject_init);46module_exit(err_inject_exit);47 48MODULE_DESCRIPTION("PM notifier error injection module");49MODULE_LICENSE("GPL");50MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");51