Hi Benjamin, I love your patch! Yet something to improve: [auto build test ERROR on media-tree/master] [also build test ERROR on linus/master v6.3-rc3 next-20230321] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Benjamin-Gaignard/media-videobuf2-Access-vb2_queue-bufs-array-through-helper-functions/20230321-183154 base: git://linuxtv.org/media_tree.git master patch link: https://lore.kernel.org/r/20230321102855.346732-6-benjamin.gaignard%40collabora.com patch subject: [PATCH v2 5/8] media: v4l2: Add DELETE_BUF ioctl config: x86_64-randconfig-a002-20230320 (https://download.01.org/0day-ci/archive/20230322/202303220359.f1UOGBNV-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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/intel-lab-lkp/linux/commit/c33ab7329647eb04482423ac9945dee579038e84 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Benjamin-Gaignard/media-videobuf2-Access-vb2_queue-bufs-array-through-helper-functions/20230321-183154 git checkout c33ab7329647eb04482423ac9945dee579038e84 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig COMPILER_INSTALL_PATH=$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 where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Link: https://lore.kernel.org/oe-kbuild-all/202303220359.f1UOGBNV-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>, old ones prefixed by <<): >> ERROR: modpost: "vb2_core_delete_buf" [drivers/media/common/videobuf2/videobuf2-v4l2.ko] undefined! -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
