taglinefilesource code
hangup1696drivers/char/serial.ctty->hangup = rs_hangup;
hangup267drivers/char/tty_io.cif (tty->hangup)
hangup268drivers/char/tty_io.c(tty->hangup)(tty);
hangup235include/linux/tty.hvoid (*hangup)(struct tty_struct *tty);