reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-66-g0196afe1
        # https://github.com/tobetter/linux/commit/5eb6ab367a64137ac87b566a60abc5eb8483b1a9
        git remote add tobetter https://github.com/tobetter/linux
        git fetch --no-tags tobetter odroid-6.8.y
        git checkout 5eb6ab367a64137ac87b566a60abc5eb8483b1a9
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/input/touchscreen/