Mario Limonciello [mailto:mario_limonciello@xxxxxxxx] > Sent: Friday, June 03, 2016 12:58 AM [...] > @@ -500,6 +502,7 @@ enum rtl8152_flags { > SELECTIVE_SUSPEND, > PHY_RESET, > SCHEDULE_NAPI, > + MAC_PASSTHRU = 0, I don't think you have to give this a value. > }; > [...] > static int set_ethernet_addr(struct r8152 *tp) > { > struct net_device *dev = tp->netdev; > @@ -1041,6 +1088,10 @@ static int set_ethernet_addr(struct r8152 *tp) > else > ret = pla_ocp_read(tp, PLA_BACKUP, 8, sa.sa_data); > > + /* if system provides auxiliary MAC address */ > + if (get_auxiliary_addr(tp, &sa)) > + ret = 0; It still has problem when tp->version == RTL_VER_01. First, you would read the current MAC address (MAC1) to sa.sa_data. Then sa.sa_data may be modified by MAC2 after get_auxiliary_addr(). However, the MAC2 wouldn't be set to the device, because if (tp->version == RTL_VER_01) ether_addr_copy(dev->dev_addr, sa.sa_data); Therefore, you would find that dev_addr is MAC2, and the device uses MAC1. Best Regards, Hayes -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html