default or selected kernelversion does not have config value CONFIG_COMEDI_FC.
Result is shown for kernelversion 6.5.1

CONFIG_COMEDI_FC (not configurable)

modulename: comedi_fc.ko

configname: CONFIG_COMEDI_FC

Linux Kernel Configuration
└─>Device Drivers
└─>Staging drivers
└─>COMEDI_FC
In linux kernel since version 2.6.35 (release Date: 2010-08-01)  
source code:
drivers/staging/comedi/drivers/comedi_fc.c