Hi Thomas, I love your patch! Yet something to improve: [auto build test ERROR on next-20211029] [cannot apply to drm/drm-next shawnguo/for-next pinchartl-media/drm/du/next v5.15 v5.15-rc7 v5.15-rc6 v5.15] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-Small-CMA-cleanups/20211101-161911 base: bdcc9f6a568275aed4cc32fd2312432d2ff1b704 config: x86_64-randconfig-a004-20211101 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 82ed106567063ea269c6d5669278b733e173a42f) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/c3c7ec5f9ccd90e78f0f2d3143505db4060bbf17 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Thomas-Zimmermann/drm-Small-CMA-cleanups/20211101-161911 git checkout c3c7ec5f9ccd90e78f0f2d3143505db4060bbf17 # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: module drm_cma_helper uses symbol dma_buf_vmap from namespace DMA_BUF, but does not import it. >> ERROR: modpost: module drm_cma_helper uses symbol dma_buf_vunmap from namespace DMA_BUF, but does not import it. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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