rtl8180: don't write MAR registers for rtl8187se

MAR registers are not present in rtl8187se, and attempting to
write to them must be avoided
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/rtl818x/rtl8180/dev.c

@@ -779,8 +779,13 @@ static int rtl8180_start(struct ieee80211_hw *dev)
 
 	rtl8180_int_enable(dev);
 
-	rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
-	rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
+	/* in rtl8187se at MAR regs offset there is the management
+	 * TX descriptor DMA addres..
+	 */
+	if (priv->chip_family != RTL818X_CHIP_FAMILY_RTL8187SE) {
+		rtl818x_iowrite32(priv, &priv->map->MAR[0], ~0);
+		rtl818x_iowrite32(priv, &priv->map->MAR[1], ~0);
+	}
 
 	reg = RTL818X_RX_CONF_ONLYERLPKT |
 	      RTL818X_RX_CONF_RX_AUTORESETPHY |