diff --git a/drivers/serial/8250_pci.c b/drivers/serial/8250_pci.c
index e371a9c15341e2598825affdbd2ef1d727dfbde7..a07015d646ddad5eb6743c5fa1e1bb281694d051 100644
--- a/drivers/serial/8250_pci.c
+++ b/drivers/serial/8250_pci.c
@@ -398,8 +398,7 @@ static int sbs_init(struct pci_dev *dev)
 {
 	u8 __iomem *p;
 
-	p = ioremap_nocache(pci_resource_start(dev, 0),
-						pci_resource_len(dev, 0));
+	p = pci_ioremap_bar(dev, 0);
 
 	if (p == NULL)
 		return -ENOMEM;
@@ -423,8 +422,7 @@ static void __devexit sbs_exit(struct pci_dev *dev)
 {
 	u8 __iomem *p;
 
-	p = ioremap_nocache(pci_resource_start(dev, 0),
-					pci_resource_len(dev, 0));
+	p = pci_ioremap_bar(dev, 0);
 	/* FIXME: What if resource_len < OCT_REG_CR_OFF */
 	if (p != NULL)
 		writeb(0, p + OCT_REG_CR_OFF);
diff --git a/drivers/serial/icom.c b/drivers/serial/icom.c
index 9f2891c2c4a21f93e4cc6289e4b95c286a655455..cd1b6a45bb8241b3cbdadc0f03021dc634adace4 100644
--- a/drivers/serial/icom.c
+++ b/drivers/serial/icom.c
@@ -1548,8 +1548,7 @@ static int __devinit icom_probe(struct pci_dev *dev,
 		goto probe_exit1;
 	}
 
-	 icom_adapter->base_addr = ioremap(icom_adapter->base_addr_pci,
-						pci_resource_len(dev, 0));
+	 icom_adapter->base_addr = pci_ioremap_bar(dev, 0);
 
 	if (!icom_adapter->base_addr)
 		goto probe_exit1;