backup_tty        146 drivers/tty/n_hdlc.c 	struct tty_struct	*backup_tty;
backup_tty        304 drivers/tty/n_hdlc.c 		if (tty == n_hdlc->backup_tty)
backup_tty        305 drivers/tty/n_hdlc.c 			n_hdlc->backup_tty = NULL;
backup_tty        308 drivers/tty/n_hdlc.c 		if (n_hdlc->backup_tty) {
backup_tty        309 drivers/tty/n_hdlc.c 			n_hdlc->tty = n_hdlc->backup_tty;