tag	line	file	source code
PORT_UNKNOWN	1162	drivers/char/serial.c	(new_serial.type < PORT_UNKNOWN) || (new_serial.type > PORT_MAX)) {
PORT_UNKNOWN	1914	drivers/char/serial.c	info->type = PORT_UNKNOWN;
PORT_UNKNOWN	1972	drivers/char/serial.c	info->type = PORT_UNKNOWN;
PORT_UNKNOWN	2031	drivers/char/serial.c	info->type = PORT_UNKNOWN;
PORT_UNKNOWN	2050	drivers/char/serial.c	if (info->type == PORT_UNKNOWN)