115  * xenbus_watch_path - register a watch
117  * @path: path to watch
118  * @watch: watch to register
121  * Register a @watch on the given path, using the given xenbus_watch structure
124  * @watch->node, and remains the caller's to free.  On error, @watch->node will
129 		      struct xenbus_watch *watch,  in xenbus_watch_path()  argument
137 	watch->node = path;  in xenbus_watch_path()
138 	watch->will_handle = will_handle;  in xenbus_watch_path()
139 	watch->callback = callback;  in xenbus_watch_path()
141 	err = register_xenbus_watch(watch);  in xenbus_watch_path()
144 		watch->node = NULL;  in xenbus_watch_path()
145 		watch->will_handle = NULL;  in xenbus_watch_path()
146 		watch->callback = NULL;  in xenbus_watch_path()
147 		xenbus_dev_fatal(dev, err, "adding watch on %s", path);  in xenbus_watch_path()
156  * xenbus_watch_pathfmt - register a watch on a sprintf-formatted path
158  * @watch: watch to register
160  * @pathfmt: format of path to watch
162  * Register a watch on the given @path, using the given xenbus_watch
165  * (@path/@path2) will be saved as @watch->node, and becomes the caller's to
166  * kfree().  On error, watch->node will be NULL, so the caller has nothing to
171 			 struct xenbus_watch *watch,  in xenbus_watch_pathfmt()  argument
187 		xenbus_dev_fatal(dev, -ENOMEM, "allocating path for watch");  in xenbus_watch_pathfmt()
190 	err = xenbus_watch_path(dev, path, watch, will_handle, callback);  in xenbus_watch_pathfmt()