stmmac: copy unicast mac address to MAC registers

BugLink: https://bugs.launchpad.net/bugs/1826212

[ Upstream commit a830405e ]

Currently stmmac driver not copying the valid ethernet
MAC address to MAC registers. This patch takes care
of updating the MAC register with MAC address.
Signed-off-by: Bhadram Varka <vbhadram@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -2529,6 +2529,20 @@ static int stmmac_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 	return ret;
 }
 
+static int stmmac_set_mac_address(struct net_device *ndev, void *addr)
+{
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	int ret = 0;
+
+	ret = eth_mac_addr(ndev, addr);
+	if (ret)
+		return ret;
+
+	priv->hw->mac->set_umac_addr(priv->hw, ndev->dev_addr, 0);
+
+	return ret;
+}
+
 #ifdef CONFIG_DEBUG_FS
 static struct dentry *stmmac_fs_dir;
 
@@ -2730,7 +2744,7 @@ static const struct net_device_ops stmmac_netdev_ops = {
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller = stmmac_poll_controller,
 #endif
-	.ndo_set_mac_address = eth_mac_addr,
+	.ndo_set_mac_address = stmmac_set_mac_address,
 };
 
 /**