217 struct w1_master  struct
219 	struct list_head	w1_master_entry;  argument
224 	 * w1_master.mutex locked and is operating on the bus.  argument
227 	struct mutex		list_mutex;
228 	struct list_head	slist;
229 	struct list_head	async_list;
230 	int			max_slave_count, slave_count;
231 	unsigned long		attempts;
232 	int			slave_ttl;
233 	int			initialized;
234 	u32			id;
235 	int			search_count;
237 	u64			search_id;
239 	atomic_t		refcnt;
241 	void			*priv;
244 	int			enable_pullup;
268  * When inserted into the w1_master async_list, w1_process will execute  argument