reproduce (this is a W=1 build): git checkout 9448598b22c50c8a5bb77a9103e2d49f134c9578 b4 shazam https://lore.kernel.org/r/20260126-add_ltc2305_driver-v3-2-951349a87f97@gmail.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=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang-20 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/iio/adc/