diff --git a/drivers/tty/serial/8250/8250_pnp.c b/drivers/tty/serial/8250/8250_pnp.c
index 7c06ae79d8e2..7a837fdf9df1 100644
--- a/drivers/tty/serial/8250/8250_pnp.c
+++ b/drivers/tty/serial/8250/8250_pnp.c
@@ -436,7 +436,6 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 {
 	struct uart_8250_port uart, *port;
 	int ret, flags = dev_id->driver_data;
-	unsigned char iotype;
 	long line;
 
 	if (flags & UNKNOWN_DEV) {
@@ -448,14 +447,11 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 	memset(&uart, 0, sizeof(uart));
 	if ((flags & CIR_PORT) && pnp_port_valid(dev, 2)) {
 		uart.port.iobase = pnp_port_start(dev, 2);
-		iotype = UPIO_PORT;
 	} else if (pnp_port_valid(dev, 0)) {
 		uart.port.iobase = pnp_port_start(dev, 0);
-		iotype = UPIO_PORT;
 	} else if (pnp_mem_valid(dev, 0)) {
 		uart.port.mapbase = pnp_mem_start(dev, 0);
 		uart.port.mapsize = pnp_mem_len(dev, 0);
-		iotype = UPIO_MEM;
 		uart.port.flags = UPF_IOREMAP;
 	} else
 		return -ENODEV;
@@ -471,12 +467,6 @@ serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 	if (ret)
 		return ret;
 
-	/*
-	 * The previous call may not set iotype correctly when reg-io-width
-	 * property is absent and it doesn't support IO port resource.
-	 */
-	uart.port.iotype = iotype;
-
 	if (flags & CIR_PORT) {
 		uart.port.flags |= UPF_FIXED_PORT | UPF_FIXED_TYPE;
 		uart.port.type = PORT_8250_CIR;