diff --git a/drivers/serial/serial_cs.c b/drivers/serial/serial_cs.c
index d8b6600..164d2a4 100644
--- a/drivers/serial/serial_cs.c
+++ b/drivers/serial/serial_cs.c
@@ -389,7 +389,7 @@
 /*====================================================================*/
 
 static int setup_serial(struct pcmcia_device *handle, struct serial_info * info,
-			kio_addr_t iobase, int irq)
+			unsigned int iobase, int irq)
 {
 	struct uart_port port;
 	int line;
@@ -456,7 +456,7 @@
 
 static int simple_config(struct pcmcia_device *link)
 {
-	static const kio_addr_t base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
+	static const unsigned int base[5] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8, 0x0 };
 	static const int size_table[2] = { 8, 16 };
 	struct serial_info *info = link->priv;
 	struct serial_cfg_mem *cfg_mem;
@@ -480,7 +480,7 @@
 	/* If the card is already configured, look up the port and irq */
 	i = pcmcia_get_configuration_info(link, &config);
 	if ((i == CS_SUCCESS) && (config.Attributes & CONF_VALID_CLIENT)) {
-		kio_addr_t port = 0;
+		unsigned int port = 0;
 		if ((config.BasePort2 != 0) && (config.NumPorts2 == 8)) {
 			port = config.BasePort2;
 			info->slave = 1;