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 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 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