While thinking about locking schema with respect to sysfs files I recalled, why I implemented such a logic - now one can _always_ remove _any_ module [corresponding object is removed from accessible pathes and waits untill all exsting users are gone], which is very good - I really like it in networking model, while with whole device driver model if we will read device's file very quickly in several threads we may end up not unloading it at all. So decision is simple from the first point of view - just remove appropriate objects from accessible pathes and free them from finall callbacks [device's remove method]. Evgeniy Polyakov Only failure makes us experts. -- Theo de Raadt