reproduce (this is a W=1 build):
        git remote add staging https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
        git fetch staging staging-testing
        git checkout staging/staging-testing
        b4 shazam https://lore.kernel.org/r/20260317203715.7430-1-rayfraytech@gmail.com

        # install sparc64 cross compiling tool for clang build
        # apt-get install binutils-sparc64-linux-gnu
        # clang-23 might not be officially released. Try a lower version if installation fails.
        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=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sparc64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-23 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=sparc64 SHELL=/bin/bash drivers/media/usb/em28xx/ drivers/staging/rtl8723bs/