> -----Original Message----- > From: Hayes Wang [mailto:hayeswang@xxxxxxxxxxx] > Sent: Friday, June 3, 2016 4:44 AM > To: Limonciello, Mario <Mario_Limonciello@xxxxxxxx> > Cc: LKML <linux-kernel@xxxxxxxxxxxxxxx>; Netdev > <netdev@xxxxxxxxxxxxxxx>; Linux USB <linux-usb@xxxxxxxxxxxxxxx>; > pali.rohar@xxxxxxxxx; anthony.wong@xxxxxxxxxxxxx; Greg KH > <gregkh@xxxxxxxxxxxxxxxxxxx> > Subject: RE: [PATCH v2] r8152: Add support for setting MAC to system's > Auxiliary MAC address > > 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 > Hayes, >From the information that I got that this is only a valid thing to do on RTL-8153-AD (when dock bit set), should this only match with tp->version >= RTL_VER_03? How can I confirm that the chip is 8153-AD specifically? I didn't see something obvious in driver to tell this. Thanks, -- 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
