Hi Mark, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-intel/for-linux-next-fixes] [also build test WARNING on drm/drm-next linus/master v6.3-rc6 next-20230411] [cannot apply to drm-tip/drm-tip drm-misc/drm-misc-next drm-intel/for-linux-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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Mark-Yacoub/drm-hdcp-Add-drm_hdcp_atomic_check/20230412-032412 base: git://anongit.freedesktop.org/drm-intel for-linux-next-fixes patch link: https://lore.kernel.org/r/20230411192134.508113-5-markyacoub%40google.com patch subject: [PATCH v9 04/10] drm/hdcp: Expand HDCP helper library for enable/disable/check config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20230412/202304120709.oF7BKZuf-lkp@xxxxxxxxx/config) compiler: m68k-linux-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/972a98f65fb56b3be4370593c2b81f1283750db7 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Mark-Yacoub/drm-hdcp-Add-drm_hdcp_atomic_check/20230412-032412 git checkout 972a98f65fb56b3be4370593c2b81f1283750db7 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=m68k SHELL=/bin/bash drivers/gpu/drm/display/ 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/202304120709.oF7BKZuf-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/display/drm_hdcp_helper.c:675:5: warning: no previous prototype for 'drm_hdcp_helper_hdcp1_capable_dp' [-Wmissing-prototypes] 675 | int drm_hdcp_helper_hdcp1_capable_dp(struct drm_hdcp_helper_data *data, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ >> drivers/gpu/drm/display/drm_hdcp_helper.c:1325:5: warning: no previous prototype for 'drm_hdcp_hdcp1_check_link_registers_dp' [-Wmissing-prototypes] 1325 | int drm_hdcp_hdcp1_check_link_registers_dp(struct drm_device *dev, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ vim +/drm_hdcp_helper_hdcp1_capable_dp +675 drivers/gpu/drm/display/drm_hdcp_helper.c 674 > 675 int drm_hdcp_helper_hdcp1_capable_dp(struct drm_hdcp_helper_data *data, 676 bool *capable) 677 { 678 int ret; 679 u8 bcaps; 680 681 ret = data->display_type_funcs->remote_read( 682 data, data->hdcp1_lut->bcaps, &bcaps, 1); 683 *capable = !ret && (bcaps & DP_BCAPS_HDCP_CAPABLE); 684 685 return 0; 686 } 687 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
