Hi Thomas, I love your patch! Yet something to improve: [auto build test ERROR on 4d00e2309398147acdbfefbe1deb4b0e78868466] url: https://github.com/0day-ci/linux/commits/Thomas-Zimmermann/drm-Provide-framebuffer-vmap-helpers/20210716-020508 base: 4d00e2309398147acdbfefbe1deb4b0e78868466 config: arc-allyesconfig (attached as .config) compiler: arceb-elf-gcc (GCC) 10.3.0 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/2369821ddd70d806874995047363a25d43229cfe git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Thomas-Zimmermann/drm-Provide-framebuffer-vmap-helpers/20210716-020508 git checkout 2369821ddd70d806874995047363a25d43229cfe # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-10.3.0 make.cross O=build_dir ARCH=arc 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 >>): In file included from drivers/gpu/drm/vkms/vkms_output.c:3: >> drivers/gpu/drm/vkms/vkms_drv.h:23:21: error: array type has incomplete element type 'struct dma_buf_map' 23 | struct dma_buf_map map[DRM_FORMAT_MAX_PLANES]; | ^~~ vim +23 drivers/gpu/drm/vkms/vkms_drv.h 21 22 struct vkms_writeback_job { > 23 struct dma_buf_map map[DRM_FORMAT_MAX_PLANES]; 24 }; 25 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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