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gpib: lpvo_usb: fix unintended binding of FTDI 8U232AM devices

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The LPVO USB GPIB adapter apparently uses an FTDI 8U232AM with the
default PID, but this device id is already handled by the ftdi_sio
serial driver.

Stop binding to the default PID to avoid breaking existing setups with
FTDI 8U232AM.

Anyone using this driver should blacklist the ftdi_sio driver and add
the device id manually through sysfs (e.g. using udev rules).

Fixes: fce79512a9 ("staging: gpib: Add LPVO DIY USB GPIB driver")
Fixes: e6ab504633 ("staging: gpib: Destage gpib")
Cc: Dave Penkler <dpenkler@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://patch.msgid.link/20260305151729.10501-2-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold
2026-03-05 16:17:28 +01:00
committed by Greg Kroah-Hartman
parent a1621e06cc
commit 163cc462de
1 changed files with 4 additions and 3 deletions
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7
drivers/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c
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@@ -38,8 +38,10 @@ MODULE_DESCRIPTION("GPIB driver for LPVO usb devices");
/*
* Table of devices that work with this driver.
*
* Currently, only one device is known to be used in the
* lpvo_usb_gpib adapter (FTDI 0403:6001).
* Currently, only one device is known to be used in the lpvo_usb_gpib
* adapter (FTDI 0403:6001) but as this device id is already handled by the
* ftdi_sio USB serial driver the LPVO driver must not bind to it by default.
*
* If your adapter uses a different chip, insert a line
* in the following table with proper <Vendor-id>, <Product-id>.
*
@@ -50,7 +52,6 @@ MODULE_DESCRIPTION("GPIB driver for LPVO usb devices");
*/
static const struct usb_device_id skel_table[] = {
{ USB_DEVICE(0x0403, 0x6001) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE(usb, skel_table);