dev_old = udev_device_new_from_syspath(event->udev, udev_device_get_syspath(dev));
if (dev_old != NULL) {
udev_device_read_db(dev_old);
udev_device_set_info_loaded(dev_old);
}
dev_old = udev_device_new_from_syspath(event->udev, udev_device_get_syspath(dev));
if (dev_old != NULL) {
udev_device_read_db(dev_old);
udev_device_set_info_loaded(dev_old);
}