| Message ID | 20210908084952.41486-2-aaron.ma@canonical.com |
|---|---|
| State | New |
| Headers | show |
| Series | UBUNTU: SAUCE: Fix invalid MAC address after hotplug tbt dock | expand |
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index 51be5b9b07bd..512739f20cad 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -5088,6 +5088,9 @@ static int igc_probe(struct pci_dev *pdev, memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); + if (pci_is_thunderbolt_attached(pdev)) + msleep(600); + /* Initialize skew-specific constants */ err = ei->get_invariants(hw); if (err)
BugLink: https://bugs.launchpad.net/bugs/1942999 Such as dock hot plug event when runtime, for hardware implementation, the MAC copy takes less than one second when BIOS enabled MAC passthrough. After test on Lenovo TBT4 dock, 600ms is enough to update the MAC address. Otherwise ethernet fails to work. Link: https://lore.kernel.org/lkml/20210702045120.22855-2-aaron.ma@canonical.com/ Signed-off-by: Aaron Ma <aaron.ma@canonical.com> --- drivers/net/ethernet/intel/igc/igc_main.c | 3 +++ 1 file changed, 3 insertions(+)