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net: mvpp2: fix use of the random mac address for PPv2.2

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The MAC retrieval logic is using a variable to store an h/w stored mac
address and checks this mac against invalid ones before using it. But
the mac address is only read from h/w when using PPv2.1. So when using
PPv2.2 it defaults to its init state.

This patches fixes the logic to only check if the h/w mac is valid when
actually retrieving a mac from h/w.

Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Antoine Tenart 2017-09-02 11:06:48 +02:00 committed by David S. Miller
parent 3ba8c81e15
commit d2a6e48e52
1 changed files with 9 additions and 7 deletions
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16
drivers/net/ethernet/marvell/mvpp2.c
View file

@ -7478,15 +7478,17 @@ static void mvpp2_port_copy_mac_addr(struct net_device *dev, struct mvpp2 *priv,
*mac_from = "device tree";
ether_addr_copy(dev->dev_addr, dt_mac_addr);
} else {
if (priv->hw_version == MVPP21)
if (priv->hw_version == MVPP21) {
mvpp21_get_mac_address(port, hw_mac_addr);
if (is_valid_ether_addr(hw_mac_addr)) {
*mac_from = "hardware";
ether_addr_copy(dev->dev_addr, hw_mac_addr);
} else {
*mac_from = "random";
eth_hw_addr_random(dev);
if (is_valid_ether_addr(hw_mac_addr)) {
*mac_from = "hardware";
ether_addr_copy(dev->dev_addr, hw_mac_addr);
return;
}
}
*mac_from = "random";
eth_hw_addr_random(dev);
}
}