diff --git a/drivers/tty/serial/sc16is7xx.c b/drivers/tty/serial/sc16is7xx.c
index 1fd64a47341d..4b638e69f36f 100644
--- a/drivers/tty/serial/sc16is7xx.c
+++ b/drivers/tty/serial/sc16is7xx.c
@@ -1472,14 +1472,7 @@ static int sc16is7xx_setup_channel(struct sc16is7xx_one *one, int i,
 	port->type	= PORT_SC16IS7XX;
 	port->fifosize	= SC16IS7XX_FIFO_SIZE;
 	port->flags	= UPF_FIXED_TYPE | UPF_LOW_LATENCY;
-	port->iobase	= i;
-	/*
-	 * Use all ones as membase to make sure uart_configure_port() in
-	 * serial_core.c does not abort for SPI/I2C devices where the
-	 * membase address is not applicable.
-	 */
-	port->membase	= (void __iomem *)~0;
-	port->iotype	= UPIO_PORT;
+	port->iotype	= UPIO_BUS;
 	port->rs485_config = sc16is7xx_config_rs485;
 	port->rs485_supported = sc16is7xx_rs485_supported;
 	port->ops	= &sc16is7xx_ops;