reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-66-g0196afe1
        # https://github.com/intel-lab-lkp/linux/commit/ddd70a454be0e5c2f17f3fb5220268f5a9fa6910
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review admiyo-os-amperecomputing-com/mctp-pcc-Check-before-sending-MCTP-PCC-response-ACK/20240703-163558
        git checkout ddd70a454be0e5c2f17f3fb5220268f5a9fa6910
        # 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/mailbox/