reproduce (this is a W=1 build):
        # https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next.git/commit/?id=1f9285c0c2eb5b0ea5c8acded4406d57ae3576a4
        git remote add iwlwifi-next https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next.git
        git fetch --no-tags iwlwifi-next next
        git checkout 1f9285c0c2eb5b0ea5c8acded4406d57ae3576a4

        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/net/wireless/intel/iwlwifi/