reproduce: git clone https://github.com/intel/lkp-tests.git ~/lkp-tests # apt-get install sparse # sparse version: v0.6.4-61-g09411a7a-dirty # https://github.com/intel-lab-lkp/linux/commit/b57686334bef0c94cd1b2940f7faf19b219f5292 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Andrea-della-Porta/bcm2835-dma-Add-support-for-per-channel-flags/20240204-150430 git checkout b57686334bef0c94cd1b2940f7faf19b219f5292 # save the config file mkdir build_dir && cp config build_dir/.config ~/lkp-tests/kbuild/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=arm64 olddefconfig ~/lkp-tests/kbuild/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__ -fmax-errors=unlimited -fmax-warnings=unlimited' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/dma/