38         for (index, driver) in drivers_guard.iter().enumerate() {  in lookup_tty_driver()
43             return Some((index, driver.clone()));  in lookup_tty_driver()
140     pub fn tty_line_name(&self, index: usize) -> String {  in tty_line_name()
147             return format!("{}{}", self.name, index + self.name_base);  in tty_line_name()
152         self.ttys.lock().insert(tty_core.core().index(), tty_core);  in add_tty()
166     fn lockup_tty(&self, index: usize) -> Option<Arc<TtyCore>> {  in lockup_tty()
168         return match device_guard.get(&index) {  in lockup_tty()
176         let tty_index = tty.index();  in standard_install()
212     fn init_tty_device(driver: Arc<TtyDriver>, index: usize) -> Result<Arc<TtyCore>, SystemError> {  in init_tty_device()
213         let tty = TtyCore::new(driver.clone(), index);  in init_tty_device()
220             TTY_PORTS[core.index()].setup_tty(Arc::downgrade(&tty));  in init_tty_device()
221             tty.set_port(TTY_PORTS[core.index()].clone());  in init_tty_device()
231         let (index, driver) =  in open_tty()
234         let tty = match driver.lockup_tty(index) {  in open_tty()
248             None => Self::init_tty_device(driver, index)?,  in open_tty()
251         CURRENT_VCNUM.store(index as isize, Ordering::SeqCst);  in open_tty()