text: #ifndef _LINUX_OF_PRIVATE_H
  #define _LINUX_OF_PRIVATE_H
  /*
   * Private symbols used by OF support code
   *
   * Paul Mackerras	August 1996.
   * Copyright (C) 1996-2005 Paul Mackerras.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License
   * as published by the Free Software Foundation; either version
   * 2 of the License, or (at your option) any later version.
   */
  
  /**
   * struct alias_prop - Alias property in 'aliases' node
   * @link:	List node to link the structure in aliases_lookup list
   * @alias:	Alias property name
   * @np:		Pointer to device_node that the alias stands for
   * @id:		Index value from end of alias name
   * @stem:	Alias string without the index
   *
   * The structure represents one alias property of 'aliases' node as
   * an entry in aliases_lookup list.
   */
  struct alias_prop {
  	struct list_head link;
  	const char *alias;
  	struct device_node *np;
  	int id;
  	char stem[0];
  };
  
  extern struct mutex of_mutex;
  extern struct list_head aliases_lookup;
  extern struct kset *of_kset;
  
  
  static inline struct device_node *kobj_to_device_node(struct kobject *kobj)
  {
  	return container_of(kobj, struct device_node, kobj);
  }
  
  #if defined(CONFIG_OF_DYNAMIC)
  extern int of_property_notify(int action, struct device_node *np,
  			      struct property *prop, struct property *old_prop);
  extern void of_node_release(struct kobject *kobj);
  extern int __of_changeset_apply(struct of_changeset *ocs);
  extern int __of_changeset_revert(struct of_changeset *ocs);
  #else /* CONFIG_OF_DYNAMIC */
  static inline int of_property_notify(int action, struct device_node *np,
  				     struct property *prop, struct property *old_prop)
  {
  	return 0;
  }
  #endif /* CONFIG_OF_DYNAMIC */
  
  /**
   * General utilities for working with live trees.
   *
   * All functions with two leading underscores operate
   * without taking node references, so you either have to
   * own the devtree lock or work on detached trees only.
   */
  struct property *__of_prop_dup(const struct property *prop, gfp_t allocflags);
  __printf(2, 3) struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, ...);
  
  extern const void *__of_get_property(const struct device_node *np,
  				     const char *name, int *lenp);
  extern int __of_add_property(struct device_node *np, struct property *prop);
  extern int __of_add_property_sysfs(struct device_node *np,
  		struct property *prop);
  extern int __of_remove_property(struct device_node *np, struct property *prop);
  extern void __of_remove_property_sysfs(struct device_node *np,
  		struct property *prop);
  extern int __of_update_property(struct device_node *np,
  		struct property *newprop, struct property **oldprop);
  extern void __of_update_property_sysfs(struct device_node *np,
  		struct property *newprop, struct property *oldprop);
  
  extern void __of_attach_node(struct device_node *np);
  extern int __of_attach_node_sysfs(struct device_node *np);
  extern void __of_detach_node(struct device_node *np);
  extern void __of_detach_node_sysfs(struct device_node *np);
  
  extern void __of_sysfs_remove_bin_file(struct device_node *np,
  				       struct property *prop);
  
  /* iterators for transactions, used for overlays */
  /* forward iterator */
  #define for_each_transaction_entry(_oft, _te) \
  	list_for_each_entry(_te, &(_oft)->te_list, node)
  
  /* reverse iterator */
  #define for_each_transaction_entry_reverse(_oft, _te) \
  	list_for_each_entry_reverse(_te, &(_oft)->te_list, node)
  
  #endif /* _LINUX_OF_PRIVATE_H */
  