diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index e57df8dfe6b4..669dd52c412a 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -3078,7 +3078,7 @@ int s2io_set_swapper(nic_t * sp)
 
 static int wait_for_msix_trans(nic_t *nic, int i)
 {
-	XENA_dev_config_t *bar0 = (XENA_dev_config_t *) nic->bar0;
+	XENA_dev_config_t __iomem *bar0 = nic->bar0;
 	u64 val64;
 	int ret = 0, cnt = 0;
 
@@ -3099,7 +3099,7 @@ static int wait_for_msix_trans(nic_t *nic, int i)
 
 void restore_xmsi_data(nic_t *nic)
 {
-	XENA_dev_config_t *bar0 = (XENA_dev_config_t *) nic->bar0;
+	XENA_dev_config_t __iomem *bar0 = nic->bar0;
 	u64 val64;
 	int i;
 
@@ -3117,7 +3117,7 @@ void restore_xmsi_data(nic_t *nic)
 
 static void store_xmsi_data(nic_t *nic)
 {
-	XENA_dev_config_t *bar0 = (XENA_dev_config_t *) nic->bar0;
+	XENA_dev_config_t __iomem *bar0 = nic->bar0;
 	u64 val64, addr, data;
 	int i;
 
@@ -3140,7 +3140,7 @@ static void store_xmsi_data(nic_t *nic)
 
 int s2io_enable_msi(nic_t *nic)
 {
-	XENA_dev_config_t *bar0 = (XENA_dev_config_t *) nic->bar0;
+	XENA_dev_config_t __iomem *bar0 = nic->bar0;
 	u16 msi_ctrl, msg_val;
 	struct config_param *config = &nic->config;
 	struct net_device *dev = nic->dev;
@@ -3190,7 +3190,7 @@ int s2io_enable_msi(nic_t *nic)
 
 int s2io_enable_msi_x(nic_t *nic)
 {
-	XENA_dev_config_t *bar0 = (XENA_dev_config_t *) nic->bar0;
+	XENA_dev_config_t __iomem *bar0 = nic->bar0;
 	u64 tx_mat, rx_mat;
 	u16 msi_control; /* Temp variable */
 	int ret, i, j, msix_indx = 1;