driver_remove_file(drv, &driver_attr_unbind); 
void bus_remove_driver(struct device_driver * drv){	if (drv->bus) {		driver_remove_attrs(drv->bus, drv);		klist_remove(&drv->knode_bus);		pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name);		driver_detach(drv);		module_remove_driver(drv);		kobject_unregister(&drv->kobj);		put_bus(drv->bus);	}}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/151ef38f7c0ec1b0420f04438b0316e3a30bf2e4/bus.c/buggy/drivers/base/bus.c