static char *dev_hotplug_name(struct kset *kset, struct kobject *kobj)
static const char *dev_hotplug_name(struct kset *kset, struct kobject *kobj)
static char *dev_hotplug_name(struct kset *kset, struct kobject *kobj){	struct device *dev = to_dev(kobj);	return dev->bus->name;}