net: usb: r8152: Add MAC passthrough support for more Lenovo Docks

Like ThinkaPad Thunderbolt 4 Dock, more Lenovo docks start to use the original
Realtek USB ethernet chip ID 0bda:8153.

Lenovo Docks always use their own IDs for usb hub, even for older Docks.
If parent hub is from Lenovo, then r8152 should try MAC passthrough.
Verified on Lenovo TBT3 dock too.

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 4a02f33f0643d77ce94d859a5f45e486936a929b..f9877a3e83acf8194a923e5dbdb129f00da202b9 100644 (file)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -9603,12 +9603,9 @@ static int rtl8152_probe(struct usb_interface *intf,
                netdev->hw_features &= ~NETIF_F_RXCSUM;
        }
 
-       if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO) {
-               switch (le16_to_cpu(udev->descriptor.idProduct)) {
-               case DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2:
-               case DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2:
-                       tp->lenovo_macpassthru = 1;
-               }
+       if (udev->parent &&
+                       le16_to_cpu(udev->parent->descriptor.idVendor) == VENDOR_ID_LENOVO) {
+               tp->lenovo_macpassthru = 1;
        }
 
        if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial &&