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1// SPDX-License-Identifier: GPL-2.0-only2#include <linux/kernel.h>3#include <linux/module.h>4#include <linux/of.h>5 6#include "notifier-error-inject.h"7 8static int priority;9module_param(priority, int, 0);10MODULE_PARM_DESC(priority, "specify OF reconfig notifier priority");11 12static struct notifier_err_inject reconfig_err_inject = {13 .actions = {14 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ATTACH_NODE) },15 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_DETACH_NODE) },16 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ADD_PROPERTY) },17 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_REMOVE_PROPERTY) },18 { NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_UPDATE_PROPERTY) },19 {}20 }21};22 23static struct dentry *dir;24 25static int err_inject_init(void)26{27 int err;28 29 dir = notifier_err_inject_init("OF-reconfig",30 notifier_err_inject_dir, &reconfig_err_inject, priority);31 if (IS_ERR(dir))32 return PTR_ERR(dir);33 34 err = of_reconfig_notifier_register(&reconfig_err_inject.nb);35 if (err)36 debugfs_remove_recursive(dir);37 38 return err;39}40 41static void err_inject_exit(void)42{43 of_reconfig_notifier_unregister(&reconfig_err_inject.nb);44 debugfs_remove_recursive(dir);45}46 47module_init(err_inject_init);48module_exit(err_inject_exit);49 50MODULE_DESCRIPTION("OF reconfig notifier error injection module");51MODULE_LICENSE("GPL");52MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");53