CON_DRIVER_FLAG_INIT
con_driver->flag = CON_DRIVER_FLAG_INIT;
if (!(con_driver->flag & CON_DRIVER_FLAG_INIT)) {
con_driver->flag |= CON_DRIVER_FLAG_INIT;
con_back->flag |= CON_DRIVER_FLAG_INIT;
con_driver->flag &= ~CON_DRIVER_FLAG_INIT;
CON_DRIVER_FLAG_INIT;