Hi Kieran, I love your patch! Yet something to improve: [auto build test ERROR on v5.13-rc7] [also build test ERROR on next-20210622] [cannot apply to pinchartl-media/drm/du/next] [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/Kieran-Bingham/drm-rcar-du-Sort-... base: 13311e74253fe64329390df80bed3f07314ddd61 config: arm-defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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/653b80d239ab6e6ee64817288adcaabf7... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kieran-Bingham/drm-rcar-du-Sort-the-DU-outputs/20210623-082041 git checkout 653b80d239ab6e6ee64817288adcaabf765b30cb # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): 34 | #include "rcar_mipi_dsi.h" | ^~~~~~~~~~~~~~~~~ compilation terminated. vim +34 drivers/gpu/drm/rcar-du/rcar_du_crtc.c 24 25 #include "rcar_cmm.h" 26 #include "rcar_du_crtc.h" 27 #include "rcar_du_drv.h" 28 #include "rcar_du_encoder.h" 29 #include "rcar_du_kms.h" 30 #include "rcar_du_plane.h" 31 #include "rcar_du_regs.h" 32 #include "rcar_du_vsp.h" 33 #include "rcar_lvds.h" 35 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org