From: Jean-Francois Le Fillatre <jflf_kernel@xxxxxxx>
commit 1bd3a383075c64d638e65d263c9267b08ee7733c upstream.
The Lenovo OneLink+ Dock contains an RTL8153 controller that behaves as
a broken CDC device by default. Add the custom Lenovo PID to the r8152
driver to support it properly.
Also, systems compatible with this dock provide a BIOS option to enable
MAC address passthrough (as per Lenovo document "ThinkPad Docking
Solutions 2017"). Add the custom PID to the MAC passthrough list too.
Tested on a ThinkPad 13 1st gen with the expected results:
passthrough disabled: Invalid header when reading pass-thru MAC addr
passthrough enabled: Using pass-thru MAC addr XX:XX:XX:XX:XX:XX
Signed-off-by: Jean-Francois Le Fillatre <jflf_kernel@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/usb/cdc_ether.c | 7 +++++++
drivers/net/usb/r8152.c | 3 +++
2 files changed, 10 insertions(+)
--- a/drivers/net/usb/cdc_ether.c
+++ b/drivers/net/usb/cdc_ether.c
@@ -776,6 +776,13 @@ static const struct usb_device_id produc
},
#endif
+/* Lenovo ThinkPad OneLink+ Dock (based on Realtek RTL8153) */
+{
+ USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3054, USB_CLASS_COMM,
+ USB_CDC_SUBCLASS_ETHERNET, USB_CDC_PROTO_NONE),
+ .driver_info = 0,
+},
+
/* ThinkPad USB-C Dock (based on Realtek RTL8153) */
{
USB_DEVICE_AND_INTERFACE_INFO(LENOVO_VENDOR_ID, 0x3062, USB_CLASS_COMM,
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -770,6 +770,7 @@ enum rtl8152_flags {
RX_EPROTO,
};
+#define DEVICE_ID_THINKPAD_ONELINK_PLUS_DOCK 0x3054
#define DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2 0x3082
#define DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2 0xa387
@@ -9651,6 +9652,7 @@ static int rtl8152_probe(struct usb_inte
if (le16_to_cpu(udev->descriptor.idVendor) == VENDOR_ID_LENOVO) {
switch (le16_to_cpu(udev->descriptor.idProduct)) {
+ case DEVICE_ID_THINKPAD_ONELINK_PLUS_DOCK:
case DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2:
case DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2:
tp->lenovo_macpassthru = 1;
@@ -9809,6 +9811,7 @@ static const struct usb_device_id rtl815
REALTEK_USB_DEVICE(VENDOR_ID_MICROSOFT, 0x0927),
REALTEK_USB_DEVICE(VENDOR_ID_SAMSUNG, 0xa101),
REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x304f),
+ REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3054),
REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3062),
REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3069),
REALTEK_USB_DEVICE(VENDOR_ID_LENOVO, 0x3082),
