reproduce (this is a W=1 build): # https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git/commit/?id=1d3dcf1b026121c179aec3afdec4fb22509dfc8d git remote add broonie-ci https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git git fetch --no-tags broonie-ci fileyhQmWY git checkout 1d3dcf1b026121c179aec3afdec4fb22509dfc8d # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/usb/ kernel/