net: smsc911x: allow platform_data to specify mac address

Extend the driver to accept a MAC address specified in platform_data.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/smsc911x.c

@@ -2071,6 +2071,9 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev)
 	if (is_valid_ether_addr(dev->dev_addr)) {
 		smsc911x_set_hw_mac_address(pdata, dev->dev_addr);
 		SMSC_TRACE(PROBE, "MAC Address is specified by configuration");
+	} else if (is_valid_ether_addr(pdata->config.mac)) {
+		memcpy(dev->dev_addr, pdata->config.mac, 6);
+		SMSC_TRACE(PROBE, "MAC Address specified by platform data");
 	} else {
 		/* Try reading mac address from device. if EEPROM is present
 		 * it will already have been set */

include/linux/smsc911x.h

@@ -30,6 +30,7 @@ struct smsc911x_platform_config {
 	unsigned int irq_type;
 	unsigned int flags;
 	phy_interface_t phy_interface;
+	unsigned char mac[6];
 };
 
 /* Constants for platform_device irq polarity configuration */