reproduce (this is a W=1 build):
        git checkout 46fe65a2c28ecf5df1a7475aba1f08ccf4c0ac1b
        b4 shazam https://lore.kernel.org/r/20260119-tsc3400-v1-2-82a65c5417aa@protonmail.com

        git clone https://github.com/intel/lkp-tests.git ~/lkp-tests

        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/iio/light/