drivers: video: tegra: Add blacklist for a user TV
[linux-3.10.git] / lib / cpu-notifier-error-inject.c
1 #include <linux/kernel.h>
2 #include <linux/module.h>
3 #include <linux/cpu.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 cpu notifier priority");
10
11 static struct notifier_err_inject cpu_notifier_err_inject = {
12         .actions = {
13                 { NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE) },
14                 { NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE_FROZEN) },
15                 { NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE) },
16                 { NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE_FROZEN) },
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("cpu", notifier_err_inject_dir,
28                                         &cpu_notifier_err_inject, priority);
29         if (IS_ERR(dir))
30                 return PTR_ERR(dir);
31
32         err = register_hotcpu_notifier(&cpu_notifier_err_inject.nb);
33         if (err)
34                 debugfs_remove_recursive(dir);
35
36         return err;
37 }
38
39 static void err_inject_exit(void)
40 {
41         unregister_hotcpu_notifier(&cpu_notifier_err_inject.nb);
42         debugfs_remove_recursive(dir);
43 }
44
45 module_init(err_inject_init);
46 module_exit(err_inject_exit);
47
48 MODULE_DESCRIPTION("CPU notifier error injection module");
49 MODULE_LICENSE("GPL");
50 MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");