stmmac: make ioaddr 'void __iomem *' rather than unsigned long

This avoids unnecessary casting and adds the ioaddr in the
private structure.
This patch also removes many warning when compile the driver.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/stmmac/stmmac_mdio.c b/drivers/net/stmmac/stmmac_mdio.c
index 40b2c79..03dea14 100644
--- a/drivers/net/stmmac/stmmac_mdio.c
+++ b/drivers/net/stmmac/stmmac_mdio.c
@@ -47,7 +47,6 @@
 {
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
-	unsigned long ioaddr = ndev->base_addr;
 	unsigned int mii_address = priv->hw->mii.addr;
 	unsigned int mii_data = priv->hw->mii.data;
 
@@ -56,12 +55,12 @@
 			((phyreg << 6) & (0x000007C0)));
 	regValue |= MII_BUSY;	/* in case of GMAC */
 
-	do {} while (((readl(ioaddr + mii_address)) & MII_BUSY) == 1);
-	writel(regValue, ioaddr + mii_address);
-	do {} while (((readl(ioaddr + mii_address)) & MII_BUSY) == 1);
+	do {} while (((readl(priv->ioaddr + mii_address)) & MII_BUSY) == 1);
+	writel(regValue, priv->ioaddr + mii_address);
+	do {} while (((readl(priv->ioaddr + mii_address)) & MII_BUSY) == 1);
 
 	/* Read the data from the MII data register */
-	data = (int)readl(ioaddr + mii_data);
+	data = (int)readl(priv->ioaddr + mii_data);
 
 	return data;
 }
@@ -79,7 +78,6 @@
 {
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
-	unsigned long ioaddr = ndev->base_addr;
 	unsigned int mii_address = priv->hw->mii.addr;
 	unsigned int mii_data = priv->hw->mii.data;
 
@@ -90,14 +88,14 @@
 	value |= MII_BUSY;
 
 	/* Wait until any existing MII operation is complete */
-	do {} while (((readl(ioaddr + mii_address)) & MII_BUSY) == 1);
+	do {} while (((readl(priv->ioaddr + mii_address)) & MII_BUSY) == 1);
 
 	/* Set the MII address register to write */
-	writel(phydata, ioaddr + mii_data);
-	writel(value, ioaddr + mii_address);
+	writel(phydata, priv->ioaddr + mii_data);
+	writel(value, priv->ioaddr + mii_address);
 
 	/* Wait until any existing MII operation is complete */
-	do {} while (((readl(ioaddr + mii_address)) & MII_BUSY) == 1);
+	do {} while (((readl(priv->ioaddr + mii_address)) & MII_BUSY) == 1);
 
 	return 0;
 }
@@ -111,7 +109,6 @@
 {
 	struct net_device *ndev = bus->priv;
 	struct stmmac_priv *priv = netdev_priv(ndev);
-	unsigned long ioaddr = ndev->base_addr;
 	unsigned int mii_address = priv->hw->mii.addr;
 
 	if (priv->phy_reset) {
@@ -123,7 +120,7 @@
 	 * It doesn't complete its reset until at least one clock cycle
 	 * on MDC, so perform a dummy mdio read.
 	 */
-	writel(0, ioaddr + mii_address);
+	writel(0, priv->ioaddr + mii_address);
 
 	return 0;
 }