Hi Thomas, I love your patch! Perhaps something to improve: [auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on linus/master v6.3-rc4 next-20230330] [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/Thomas-Zimmermann/drm-omapdrm-Include-linux-of-h/20230330-163453 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20230330083205.12621-7-tzimmermann%40suse.de patch subject: [PATCH 6/6] drm/omapdrm: Implement fbdev emulation as in-kernel client config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20230330/202303302056.9US55Dt4-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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/intel-lab-lkp/linux/commit/5b54095ec3eaa71a5cc6b433dfbbf58e26c44e38 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Thomas-Zimmermann/drm-omapdrm-Include-linux-of-h/20230330-163453 git checkout 5b54095ec3eaa71a5cc6b433dfbbf58e26c44e38 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/gpu/drm/omapdrm/ 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/202303302056.9US55Dt4-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/omapdrm/omap_fbdev.c:306:6: warning: no previous prototype for 'omap_fbdev_setup' [-Wmissing-prototypes] 306 | void omap_fbdev_setup(struct drm_device *dev) | ^~~~~~~~~~~~~~~~ vim +/omap_fbdev_setup +306 drivers/gpu/drm/omapdrm/omap_fbdev.c 305 > 306 void omap_fbdev_setup(struct drm_device *dev) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
