tag	line	file	source code
hangup	2803	drivers/char/cyclades.c	cy_serial_driver.hangup = cy_hangup;
hangup	4355	drivers/char/istallion.c	stli_serial.hangup = stli_hangup;
hangup	2717	drivers/char/serial.c	serial_driver.hangup = rs_hangup;
hangup	2893	drivers/char/stallion.c	stl_serial.hangup = stl_hangup;
hangup	436	drivers/char/tty_io.c	if (tty->driver.hangup)
hangup	437	drivers/char/tty_io.c	(tty->driver.hangup)(tty);
hangup	139	include/linux/tty_driver.h	void (*hangup)(struct tty_struct *tty);