2 files changed, 23 insertions, 8 deletions

diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
index 27d2d7c45519..6e175e5555a1 100644
--- a/drivers/net/smsc911x.c
+++ b/drivers/net/smsc911x.c
@@ -1742,6 +1742,21 @@ static const struct net_device_ops smsc911x_netdev_ops = {
 #endif
 };
 
+/* copies the current mac address from hardware to dev->dev_addr */
+static void __devinit smsc911x_read_mac_address(struct net_device *dev)
+{
+        struct smsc911x_data *pdata = netdev_priv(dev);
+        u32 mac_high16 = smsc911x_mac_read(pdata, ADDRH);
+        u32 mac_low32 = smsc911x_mac_read(pdata, ADDRL);
+
+        dev->dev_addr[0] = (u8)(mac_low32);
+        dev->dev_addr[1] = (u8)(mac_low32 >> 8);
+        dev->dev_addr[2] = (u8)(mac_low32 >> 16);
+        dev->dev_addr[3] = (u8)(mac_low32 >> 24);
+        dev->dev_addr[4] = (u8)(mac_high16);
+        dev->dev_addr[5] = (u8)(mac_high16 >> 8);
+}
+
 /* Initializing private device structures, only called from probe */
 static int __devinit smsc911x_init(struct net_device *dev)
 {
@@ -1829,6 +1844,12 @@ static int __devinit smsc911x_init(struct net_device *dev)
                 SMSC_WARNING(PROBE,
                         "This driver is not intended for this chip revision");
 
+        /* workaround for platforms without an eeprom, where the mac address
+         * is stored elsewhere and set by the bootloader.  This saves the
+         * mac address before resetting the device */
+        if (pdata->config.flags & SMSC911X_SAVE_MAC_ADDRESS)
+                smsc911x_read_mac_address(dev);
+
         /* Reset the LAN911x */
         if (smsc911x_soft_reset(pdata))
                 return -ENODEV;
@@ -2009,14 +2030,7 @@ static int __devinit smsc911x_drv_probe(struct platform_device *pdev)
         } else {
                 /* Try reading mac address from device. if EEPROM is present
                  * it will already have been set */
-                u32 mac_high16 = smsc911x_mac_read(pdata, ADDRH);
-                u32 mac_low32 = smsc911x_mac_read(pdata, ADDRL);
-                dev->dev_addr[0] = (u8)(mac_low32);
-                dev->dev_addr[1] = (u8)(mac_low32 >> 8);
-                dev->dev_addr[2] = (u8)(mac_low32 >> 16);
-                dev->dev_addr[3] = (u8)(mac_low32 >> 24);
-                dev->dev_addr[4] = (u8)(mac_high16);
-                dev->dev_addr[5] = (u8)(mac_high16 >> 8);
+                smsc911x_read_mac_address(dev);
 
                 if (is_valid_ether_addr(dev->dev_addr)) {
                         /* eeprom values are valid  so use them */
diff --git a/include/linux/smsc911x.h b/include/linux/smsc911x.h
index 170c76b8f7a6..b32725075d71 100644
--- a/include/linux/smsc911x.h
+++ b/include/linux/smsc911x.h
@@ -45,5 +45,6 @@ struct smsc911x_platform_config {
 #define SMSC911X_USE_32BIT                      (BIT(1))
 #define SMSC911X_FORCE_INTERNAL_PHY             (BIT(2))
 #define SMSC911X_FORCE_EXTERNAL_PHY             (BIT(3))
+#define SMSC911X_SAVE_MAC_ADDRESS               (BIT(4))
 
 #endif /* __LINUX_SMSC911X_H__ */