tty_port_unregister_device 2923 drivers/tty/serial/serial_core.c 	tty_port_unregister_device(port, drv->tty_driver, uport->line);
tty_port_unregister_device  212 drivers/tty/tty_port.c EXPORT_SYMBOL_GPL(tty_port_unregister_device);
tty_port_unregister_device  593 include/linux/tty.h extern void tty_port_unregister_device(struct tty_port *port,