From: Antoine Tenart <redacted>
Date: Mon, 15 Sep 2014 16:01:49 +0200

+static void pxa168_eth_get_mac_address(struct net_device *dev,
+				       unsigned char *addr)
+{
+	struct pxa168_eth_private *pep = netdev_priv(dev);
+	unsigned int mac_h = rdl(pep, MAC_ADDR_HIGH);
+	unsigned int mac_l = rdl(pep, MAC_ADDR_LOW);
+
+	addr[0] = (mac_h >> 24) & 0xff;
+	addr[1] = (mac_h >> 16) & 0xff;
+	addr[2] = (mac_h >> 8) & 0xff;
+	addr[3] = mac_h & 0xff;
+	addr[4] = (mac_l >> 8) & 0xff;
+	addr[5] = mac_l & 0xff;
+}

This function is not used in this patch and thus will result in a compile
warning.

The tree must be fully functional and compile with no new warnings after
each patch in a patch series.

Therefore you must add this new function in the first patch which actually
makes use of the new function.