diff options
| author |   Yorick de Wid <ydewid@gmail.com> | 2021-02-13 15:49:02 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-10 09:36:12 +0100 |
| commit | 4d8654e81db7346f915eca9f1aff18f385cab621 (patch) | |
| tree | 69c00638264f40c9a4f1b975a94bae9641c6d7c8 /drivers/usb/class/cdc-acm.c | |
| parent | Linux 5.12-rc2 (diff) | |
| download | wireguard-linux-4d8654e81db7346f915eca9f1aff18f385cab621.tar.xz wireguard-linux-4d8654e81db7346f915eca9f1aff18f385cab621.zip | |
Goodix Fingerprint device is not a modem
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@gmail.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210213144901.53199-1-ydewid@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 37f824b59daa..39ddb5585ded 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -1935,6 +1935,11 @@ static const struct usb_device_id acm_ids[] = { .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) }, |