diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 64aed7efc569..11c860ea80f6 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -110,7 +110,6 @@ static int of_platform_serial_setup(struct platform_device *ofdev,
 	spin_lock_init(&port->lock);
 
 	if (resource_type(&resource) == IORESOURCE_IO) {
-		port->iotype = UPIO_PORT;
 		port->iobase = resource.start;
 	} else {
 		port->mapbase = resource.start;