taglinefilesource code
callout_driver44drivers/char/serial.cstruct tty_driver serial_driver, callout_driver;
callout_driver2635drivers/char/serial.ccallout_driver = serial_driver;
callout_driver2636drivers/char/serial.ccallout_driver.name = "cua";
callout_driver2637drivers/char/serial.ccallout_driver.major = TTYAUX_MAJOR;
callout_driver2638drivers/char/serial.ccallout_driver.subtype = SERIAL_TYPE_CALLOUT;
callout_driver2642drivers/char/serial.cif (tty_register_driver(&callout_driver))
callout_driver2661drivers/char/serial.cinfo->callout_termios =callout_driver.init_termios;