reproduce (this is a W=1 build): git checkout linus/master b4 shazam https://lore.kernel.org/r/20251222074958.992911-1-lihaoxiang@isrc.iscas.ac.cn 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=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-8.5.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/bus/fsl-mc/