On some embedded systems the EEPROM does not contain a valid MAC address.
In that case it is better to fallback to a generated mac address and
let init scripts fix the value later.
Reported-by: Liviu Dudau <liviu.du...@arm.com>
Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
[Changed handcoded setup to use eth_hw_addr_random() and to save new address
into HW]
Signed-off-by: Liviu Dudau <liviu.du...@arm.com>
---
drivers/net/ethernet/marvell/sky2.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/net/ethernet/marvell/sky2.c
b/drivers/net/ethernet/marvell/sky2.c
index d9f4498..5606a04 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -4819,6 +4819,18 @@ static struct net_device *sky2_init_netdev(struct
sky2_hw *hw, unsigned port,
memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
ETH_ALEN);
+ /* if the address is invalid, use a random value */
+ if (!is_valid_ether_addr(dev->dev_addr)) {
+ struct sockaddr sa = { AF_UNSPEC };
+
+ netdev_warn(dev,
+ "Invalid MAC address, defaulting to random\n");
+ eth_hw_addr_random(dev);
+ memcpy(sa.sa_data, dev->dev_addr, ETH_ALEN);
+ if (sky2_set_mac_address(dev, &sa))
+ netdev_warn(dev, "Failed to set MAC address.\n");
+ }
+
return dev;
}
--
2.5.1
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