Openwrt/target/linux/ipq806x/patches-4.1/709-stmac-platform-add-support-for-retreiving-mac-from-m.patch

From 5bf2dabde1fa3af0c9082b42b6847ef3fd198b13 Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jogo@openwrt.org>
Date: Sun, 9 Aug 2015 12:53:55 +0200
Subject: [PATCH] stmac: platform: add support for retreiving mac from mtd

---
 drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -116,6 +116,19 @@ stmmac_probe_config_dt(struct platform_d
 		return ERR_PTR(-ENOMEM);
 
 	*mac = of_get_mac_address(np);
+	if (!*mac) {
+		u8 mtd_mac[ETH_ALEN];
+		int ret;
+
+		ret = of_get_mac_address_mtd(np, mtd_mac);
+		if (ret == -EPROBE_DEFER)
+			return ERR_PTR(ret);
+
+		if (is_valid_ether_addr(mtd_mac))
+			*mac = devm_kmemdup(&pdev->dev, mtd_mac, ETH_ALEN,
+					    GFP_KERNEL);
+	}
+
 	plat->interface = of_get_phy_mode(np);
 
 	/* Get max speed of operation from device tree */