taglinefilesource code
hangup2743drivers/char/cyclades.ccy_serial_driver.hangup = cy_hangup;
hangup2210drivers/char/scc.cscc_driver.hangup = scc_hangup;
hangup2614drivers/char/serial.cserial_driver.hangup = rs_hangup;
hangup410drivers/char/tty_io.cif (tty->driver.hangup)
hangup411drivers/char/tty_io.c(tty->driver.hangup)(tty);
hangup139include/linux/tty_driver.hvoid (*hangup)(struct tty_struct *tty);