reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/f8eedf583837090fc6c8af9028daa5ae14066fd2 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kyle-Switch/net-dsa-motorcomm-initialize-dsa_switch-based-on-chipid/20260929-105407 git checkout f8eedf583837090fc6c8af9028daa5ae14066fd2 # clang-24 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=$HOME/0day COMPILER=clang-24 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-24 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash drivers/net/dsa/motorcomm/