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