From: Johan Hovold Date: Thu, 5 Mar 2026 15:17:28 +0000 (+0100) Subject: gpib: lpvo_usb: fix unintended binding of FTDI 8U232AM devices X-Git-Tag: v7.0-rc4~15^2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=163cc462dea7d5b75be4db49ca78a2b99c55375e;p=thirdparty%2Fkernel%2Fstable.git gpib: lpvo_usb: fix unintended binding of FTDI 8U232AM devices 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: fce79512a96a ("staging: gpib: Add LPVO DIY USB GPIB driver") Fixes: e6ab504633e4 ("staging: gpib: Destage gpib") Cc: Dave Penkler Cc: stable Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20260305151729.10501-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c b/drivers/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c index 6fc4e3452b88d..ee781d2f0b8e1 100644 --- a/drivers/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c +++ b/drivers/gpib/lpvo_usb_gpib/lpvo_usb_gpib.c @@ -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 , . * @@ -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);