reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-61-g09411a7a-dirty
        # https://github.com/intel-lab-lkp/linux/commit/bcf1325a8211c60d8ee16840ac6824bb395b3765
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Chris-Packham/drivers-rtc-add-max313xx-series-rtc-driver/20240202-105538
        git checkout bcf1325a8211c60d8ee16840ac6824bb395b3765
        # 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=i386 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/rtc/