reproduce:
        # https://github.com/intel-lab-lkp/linux/commit/0b2980db22d2384c1783f5302b968c8aea3abf3b
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Marco-Felsch/firmware_loader-expand-firmware-error-codes-with-up-to-date-error/20260703-063422
        git checkout 0b2980db22d2384c1783f5302b968c8aea3abf3b
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs