Symbol: UPIO_UNKNOWN
drivers/tty/serial/8250/8250_port.c
2892
case UPIO_UNKNOWN:
drivers/tty/serial/8250/8250_port.c
2926
case UPIO_UNKNOWN:
drivers/tty/serial/8250/8250_port.c
3171
up->cur_iotype = UPIO_UNKNOWN;
drivers/tty/serial/serial_port.c
231
port->iotype = UPIO_UNKNOWN;
drivers/tty/serial/serial_port.c
236
if (!use_defaults && port->iotype == UPIO_UNKNOWN) {