ethernet: make more use of device_get_ethdev_address()

Convert a few drivers to device_get_ethdev_address(),
saving a few LoC.

The check if addr is valid in netsec is superfluous,
device_get_ethdev_addr() already checks that (in
fwnode_get_mac_addr()).
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/faraday/ftgmac100.c

@@ -183,10 +183,9 @@ static void ftgmac100_initial_mac(struct ftgmac100 *priv)
 	unsigned int m;
 	unsigned int l;
 
-	if (!device_get_mac_address(priv->dev, mac)) {
-		eth_hw_addr_set(priv->netdev, mac);
+	if (!device_get_ethdev_address(priv->dev, priv->netdev)) {
 		dev_info(priv->dev, "Read MAC address %pM from device tree\n",
-			 mac);
+			 priv->netdev->dev_addr);
 		return;
 	}
 

drivers/net/ethernet/microchip/enc28j60.c

@@ -1539,7 +1539,6 @@ static const struct net_device_ops enc28j60_netdev_ops = {
 
 static int enc28j60_probe(struct spi_device *spi)
 {
-	unsigned char macaddr[ETH_ALEN];
 	struct net_device *dev;
 	struct enc28j60_net *priv;
 	int ret = 0;
@@ -1572,9 +1571,7 @@ static int enc28j60_probe(struct spi_device *spi)
 		goto error_irq;
 	}
 
-	if (!device_get_mac_address(&spi->dev, macaddr))
-		eth_hw_addr_set(dev, macaddr);
-	else
+	if (device_get_ethdev_address(&spi->dev, dev))
 		eth_hw_addr_random(dev);
 	enc28j60_set_hw_macaddr(dev);
 

drivers/net/ethernet/qualcomm/emac/emac.c

@@ -545,13 +545,10 @@ static int emac_probe_resources(struct platform_device *pdev,
 				struct emac_adapter *adpt)
 {
 	struct net_device *netdev = adpt->netdev;
-	char maddr[ETH_ALEN];
 	int ret = 0;
 
 	/* get mac address */
-	if (!device_get_mac_address(&pdev->dev, maddr))
-		eth_hw_addr_set(netdev, maddr);
-	else
+	if (device_get_ethdev_address(&pdev->dev, netdev))
 		eth_hw_addr_random(netdev);
 
 	/* Core 0 interrupt */

drivers/net/ethernet/socionext/netsec.c

@@ -1981,7 +1981,6 @@ static int netsec_probe(struct platform_device *pdev)
 	struct netsec_priv *priv;
 	u32 hw_ver, phy_addr = 0;
 	struct net_device *ndev;
-	u8 macbuf[ETH_ALEN];
 	int ret;
 
 	mmio_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -2034,12 +2033,8 @@ static int netsec_probe(struct platform_device *pdev)
 		goto free_ndev;
 	}
 
-	ret = device_get_mac_address(&pdev->dev, macbuf);
-	if (!ret)
-		eth_hw_addr_set(ndev, macbuf);
-
-	if (priv->eeprom_base &&
-	    (ret || !is_valid_ether_addr(ndev->dev_addr))) {
+	ret = device_get_ethdev_address(&pdev->dev, ndev);
+	if (ret && priv->eeprom_base) {
 		void __iomem *macp = priv->eeprom_base +
 					NETSEC_EEPROM_MAC_ADDRESS;