reproduce:
        git checkout 43edce71d70c603d3f3f1b1c886f65cd02d80c24
        b4 shazam https://lore.kernel.org/r/20260103-nvidia-nand-v4-1-3156f46f3a5e@gmail.com
        make menuconfig
        # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
        # pip install -r Documentation/sphinx/requirements.txt
        make htmldocs