This is a note to let you know that I've just added the patch titled
Goodix Fingerprint device is not a modem
to the 5.11-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:
goodix-fingerprint-device-is-not-a-modem.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4d8654e81db7346f915eca9f1aff18f385cab621 Mon Sep 17 00:00:00 2001
From: Yorick de Wid <ydewid@xxxxxxxxx>
Date: Sat, 13 Feb 2021 15:49:02 +0100
Subject: Goodix Fingerprint device is not a modem
From: Yorick de Wid <ydewid@xxxxxxxxx>
commit 4d8654e81db7346f915eca9f1aff18f385cab621 upstream.
The CDC ACM driver is false matching the Goodix Fingerprint device
against the USB_CDC_ACM_PROTO_AT_V25TER.
The Goodix Fingerprint device is a biometrics sensor that should be
handled in user-space. libfprint has some support for Goodix
fingerprint sensors, although not for this particular one. It is
possible that the vendor allocates a PID per OEM (Lenovo, Dell etc).
If this happens to be the case then more devices from the same vendor
could potentially match the ACM modem module table.
Signed-off-by: Yorick de Wid <ydewid@xxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210213144901.53199-1-ydewid@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/class/cdc-acm.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1929,6 +1929,11 @@ static const struct usb_device_id acm_id
.driver_info = SEND_ZERO_PACKET,
},
+ /* Exclude Goodix Fingerprint Reader */
+ { USB_DEVICE(0x27c6, 0x5395),
+ .driver_info = IGNORE_DEVICE,
+ },
+
/* control interfaces without any protocol set */
{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
USB_CDC_PROTO_NONE) },
Patches currently in stable-queue which might be from ydewid@xxxxxxxxx are
queue-5.11/goodix-fingerprint-device-is-not-a-modem.patch
