// SPDX-License-Identifier: GPL-2.0-only

  #include <linux/kernel.h>
  #include <linux/module.h>

  #include <linux/of.h>

  
  #include "notifier-error-inject.h"
  
  static int priority;
  module_param(priority, int, 0);

  MODULE_PARM_DESC(priority, "specify OF reconfig notifier priority");

  
  static struct notifier_err_inject reconfig_err_inject = {
  	.actions = {

  		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ATTACH_NODE) },
  		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_DETACH_NODE) },
  		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_ADD_PROPERTY) },
  		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_REMOVE_PROPERTY) },
  		{ NOTIFIER_ERR_INJECT_ACTION(OF_RECONFIG_UPDATE_PROPERTY) },

  		{}
  	}
  };
  
  static struct dentry *dir;
  
  static int err_inject_init(void)
  {
  	int err;

  	dir = notifier_err_inject_init("OF-reconfig",

  		notifier_err_inject_dir, &reconfig_err_inject, priority);
  	if (IS_ERR(dir))
  		return PTR_ERR(dir);

  	err = of_reconfig_notifier_register(&reconfig_err_inject.nb);

  	if (err)
  		debugfs_remove_recursive(dir);
  
  	return err;
  }
  
  static void err_inject_exit(void)
  {

  	of_reconfig_notifier_unregister(&reconfig_err_inject.nb);

  	debugfs_remove_recursive(dir);
  }
  
  module_init(err_inject_init);
  module_exit(err_inject_exit);

  MODULE_DESCRIPTION("OF reconfig notifier error injection module");

  MODULE_LICENSE("GPL");
  MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");