This is a note to let you know that I've just added the patch titled USB: NO_LPM quirk Lenovo USB-C to Ethernet Adapher(RTL8153-04) to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-no_lpm-quirk-lenovo-usb-c-to-ethernet-adapher-rtl8153-04.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 0ad3bd562bb91853b9f42bda145b5db6255aee90 Mon Sep 17 00:00:00 2001 From: Jimmy Wang <wangjm221@xxxxxxxxx> Date: Tue, 14 Dec 2021 09:26:50 +0800 Subject: USB: NO_LPM quirk Lenovo USB-C to Ethernet Adapher(RTL8153-04) From: Jimmy Wang <wangjm221@xxxxxxxxx> commit 0ad3bd562bb91853b9f42bda145b5db6255aee90 upstream. This device doesn't work well with LPM, losing connectivity intermittently. Disable LPM to resolve the issue. Reviewed-by: <markpearson@xxxxxxxxxx> Signed-off-by: Jimmy Wang <wangjm221@xxxxxxxxx> Cc: stable <stable@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20211214012652.4898-1-wangjm221@xxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/core/quirks.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/usb/core/quirks.c +++ b/drivers/usb/core/quirks.c @@ -435,6 +435,9 @@ static const struct usb_device_id usb_qu { USB_DEVICE(0x1532, 0x0116), .driver_info = USB_QUIRK_LINEAR_UFRAME_INTR_BINTERVAL }, + /* Lenovo USB-C to Ethernet Adapter RTL8153-04 */ + { USB_DEVICE(0x17ef, 0x720c), .driver_info = USB_QUIRK_NO_LPM }, + /* Lenovo Powered USB-C Travel Hub (4X90S92381, RTL8153 GigE) */ { USB_DEVICE(0x17ef, 0x721e), .driver_info = USB_QUIRK_NO_LPM }, Patches currently in stable-queue which might be from wangjm221@xxxxxxxxx are queue-5.4/usb-no_lpm-quirk-lenovo-usb-c-to-ethernet-adapher-rtl8153-04.patch