diff --git a/drivers/net/ibm_newemac/core.c b/drivers/net/ibm_newemac/core.c
index 7a5aabd01e05..0de3aa2a2e44 100644
--- a/drivers/net/ibm_newemac/core.c
+++ b/drivers/net/ibm_newemac/core.c
@@ -1950,7 +1950,7 @@ static u32 emac_ethtool_get_rx_csum(struct net_device *ndev)
 {
 	struct emac_instance *dev = netdev_priv(ndev);
 
-	return dev->tah_dev != 0;
+	return dev->tah_dev != NULL;
 }
 
 static int emac_get_regs_len(struct emac_instance *dev)
diff --git a/drivers/net/ibm_newemac/rgmii.c b/drivers/net/ibm_newemac/rgmii.c
index 3f57d6cd26e2..de416951a435 100644
--- a/drivers/net/ibm_newemac/rgmii.c
+++ b/drivers/net/ibm_newemac/rgmii.c
@@ -84,7 +84,7 @@ static inline u32 rgmii_mode_mask(int mode, int input)
 int __devinit rgmii_attach(struct of_device *ofdev, int input, int mode)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct rgmii_regs *p = dev->base;
+	struct rgmii_regs __iomem *p = dev->base;
 
 	RGMII_DBG(dev, "attach(%d)" NL, input);
 
@@ -113,7 +113,7 @@ int __devinit rgmii_attach(struct of_device *ofdev, int input, int mode)
 void rgmii_set_speed(struct of_device *ofdev, int input, int speed)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct rgmii_regs *p = dev->base;
+	struct rgmii_regs __iomem *p = dev->base;
 	u32 ssr;
 
 	mutex_lock(&dev->lock);
@@ -135,7 +135,7 @@ void rgmii_set_speed(struct of_device *ofdev, int input, int speed)
 void rgmii_get_mdio(struct of_device *ofdev, int input)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct rgmii_regs *p = dev->base;
+	struct rgmii_regs __iomem *p = dev->base;
 	u32 fer;
 
 	RGMII_DBG2(dev, "get_mdio(%d)" NL, input);
@@ -156,7 +156,7 @@ void rgmii_get_mdio(struct of_device *ofdev, int input)
 void rgmii_put_mdio(struct of_device *ofdev, int input)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct rgmii_regs *p = dev->base;
+	struct rgmii_regs __iomem *p = dev->base;
 	u32 fer;
 
 	RGMII_DBG2(dev, "put_mdio(%d)" NL, input);
@@ -177,7 +177,7 @@ void rgmii_put_mdio(struct of_device *ofdev, int input)
 void __devexit rgmii_detach(struct of_device *ofdev, int input)
 {
 	struct rgmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct rgmii_regs *p = dev->base;
+	struct rgmii_regs __iomem *p = dev->base;
 
 	mutex_lock(&dev->lock);
 
@@ -242,7 +242,7 @@ static int __devinit rgmii_probe(struct of_device *ofdev,
 	}
 
 	rc = -ENOMEM;
-	dev->base = (struct rgmii_regs *)ioremap(regs.start,
+	dev->base = (struct rgmii_regs __iomem *)ioremap(regs.start,
 						 sizeof(struct rgmii_regs));
 	if (dev->base == NULL) {
 		printk(KERN_ERR "%s: Can't map device registers!\n",
diff --git a/drivers/net/ibm_newemac/tah.c b/drivers/net/ibm_newemac/tah.c
index e05c7e81efb6..f161fb100e8e 100644
--- a/drivers/net/ibm_newemac/tah.c
+++ b/drivers/net/ibm_newemac/tah.c
@@ -42,7 +42,7 @@ void __devexit tah_detach(struct of_device *ofdev, int channel)
 void tah_reset(struct of_device *ofdev)
 {
 	struct tah_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct tah_regs *p = dev->base;
+	struct tah_regs __iomem *p = dev->base;
 	int n;
 
 	/* Reset TAH */
@@ -108,7 +108,7 @@ static int __devinit tah_probe(struct of_device *ofdev,
 	}
 
 	rc = -ENOMEM;
-	dev->base = (struct tah_regs *)ioremap(regs.start,
+	dev->base = (struct tah_regs __iomem *)ioremap(regs.start,
 					       sizeof(struct tah_regs));
 	if (dev->base == NULL) {
 		printk(KERN_ERR "%s: Can't map device registers!\n",
diff --git a/drivers/net/ibm_newemac/zmii.c b/drivers/net/ibm_newemac/zmii.c
index d06312901848..2219ec2740e0 100644
--- a/drivers/net/ibm_newemac/zmii.c
+++ b/drivers/net/ibm_newemac/zmii.c
@@ -79,7 +79,7 @@ static inline u32 zmii_mode_mask(int mode, int input)
 int __devinit zmii_attach(struct of_device *ofdev, int input, int *mode)
 {
 	struct zmii_instance *dev = dev_get_drvdata(&ofdev->dev);
-	struct zmii_regs *p = dev->base;
+	struct zmii_regs __iomem *p = dev->base;
 
 	ZMII_DBG(dev, "init(%d, %d)" NL, input, *mode);
 
@@ -250,7 +250,7 @@ static int __devinit zmii_probe(struct of_device *ofdev,
 	}
 
 	rc = -ENOMEM;
-	dev->base = (struct zmii_regs *)ioremap(regs.start,
+	dev->base = (struct zmii_regs __iomem *)ioremap(regs.start,
 						sizeof(struct zmii_regs));
 	if (dev->base == NULL) {
 		printk(KERN_ERR "%s: Can't map device registers!\n",