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