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-rw-r--r--drivers/net/smsc911x.c30
-rw-r--r--include/linux/smsc911x.h1
2 files changed, 23 insertions, 8 deletions
diff --git a/drivers/net/smsc911x.c b/drivers/net/smsc911x.c
index 27d2d7c4551..6e175e5555a 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 170c76b8f7a..b32725075d7 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__ */