diff --git a/drivers/serial/8250_pnp.c b/drivers/serial/8250_pnp.c
index 18c58fb..6b321e8 100644
--- a/drivers/serial/8250_pnp.c
+++ b/drivers/serial/8250_pnp.c
@@ -394,7 +394,7 @@
 }
 
 static int __devinit
-serial_pnp_probe(struct pnp_dev * dev, const struct pnp_device_id *dev_id)
+serial_pnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 {
 	struct uart_port port;
 	int ret, line, flags = dev_id->driver_data;
@@ -406,15 +406,23 @@
 	}
 
 	memset(&port, 0, sizeof(struct uart_port));
-	port.irq = pnp_irq(dev,0);
-	port.iobase = pnp_port_start(dev, 0);
+	port.irq = pnp_irq(dev, 0);
+	if (pnp_port_valid(dev, 0)) {
+		port.iobase = pnp_port_start(dev, 0);
+		port.iotype = UPIO_PORT;
+	} else if (pnp_mem_valid(dev, 0)) {
+		port.mapbase = pnp_mem_start(dev, 0);
+		port.iotype = UPIO_MEM;
+		port.flags = UPF_IOREMAP;
+	} else
+		return -ENODEV;
 
 #ifdef SERIAL_DEBUG_PNP
-	printk("Setup PNP port: port %x, irq %d, type %d\n",
-	       port.iobase, port.irq, port.iotype);
+	printk("Setup PNP port: port %x, mem 0x%lx, irq %d, type %d\n",
+	       port.iobase, port.mapbase, port.irq, port.iotype);
 #endif
 
-	port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
+	port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
 	port.uartclk = 1843200;
 	port.dev = &dev->dev;
 
@@ -426,7 +434,7 @@
 
 }
 
-static void __devexit serial_pnp_remove(struct pnp_dev * dev)
+static void __devexit serial_pnp_remove(struct pnp_dev *dev)
 {
 	long line = (long)pnp_get_drvdata(dev);
 	if (line)