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Goodix Fingerprint device is not a modem

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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@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>
This commit is contained in:
Yorick de Wid
2021-02-13 15:49:02 +01:00
committed by Greg Kroah-Hartman
parent d308202c1b
commit b0db0c76a2
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/class/cdc-acm.c
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@@ -1929,6 +1929,11 @@ 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) },