netdev - [PATCH] net: fec: add the initial to set the physical mac address

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Date:	Thu, 22 Aug 2013 19:17:49 +0800
From:	Fugang Duan <B38611@...escale.com>
To:	<b20596@...escale.com>, <b45643@...escale.com>,
	<davem@...emloft.net>
CC:	<netdev@...r.kernel.org>, <shawn.guo@...aro.org>,
	<bhutchings@...arflare.com>, <R49496@...escale.com>,
	<stephen@...workplumber.org>
Subject: [PATCH] net: fec: add the initial to set the physical mac address

For imx6slx evk platform, the fec driver cannot work since there
have no valid mac address set in physical mac registers.

For imx serial platform, fec/enet IPs both need the physical MAC
address initial, otherwise it cannot work.

After acquiring the valid MAC address from devices tree/pfuse/
kernel command line/random mac address, and then set it to the
physical MAC address registers.

Signed-off-by: Fugang Duan  <B38611@...escale.com>
---
 drivers/net/ethernet/freescale/fec_main.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 4349a9e..9b5e08c 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1867,10 +1867,12 @@ fec_set_mac_address(struct net_device *ndev, void *p)
 	struct fec_enet_private *fep = netdev_priv(ndev);
 	struct sockaddr *addr = p;
 
-	if (!is_valid_ether_addr(addr->sa_data))
-		return -EADDRNOTAVAIL;
+	if (p) {
+		if (!is_valid_ether_addr(addr->sa_data))
+			return -EADDRNOTAVAIL;
 
-	memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
+		memcpy(ndev->dev_addr, addr->sa_data, ndev->addr_len);
+	}
 
 	writel(ndev->dev_addr[3] | (ndev->dev_addr[2] << 8) |
 		(ndev->dev_addr[1] << 16) | (ndev->dev_addr[0] << 24),
@@ -1969,6 +1971,7 @@ static int fec_enet_init(struct net_device *ndev)
 
 	/* Get the Ethernet address */
 	fec_get_mac(ndev);
+	fec_set_mac_address(ndev, NULL);
 
 	/* Set receive and transmit descriptor base. */
 	fep->rx_bd_base = cbd_base;
-- 
1.7.1


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