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Sun, 27 Mar 2022 20:09:20 +0000 Date: Mon, 28 Mar 2022 04:09:09 +0800 From: kernel test robot To: Roman Li Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Alex Deucher , Hersen Wu Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:1617:6: warning: no previous prototype for 'is_timing_changed' Message-ID: <202203280415.IGMBaNAP-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Roman, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 7001052160d172f6de06adeffde24dde9935ece8 commit: 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b drm/amd/display: Add dsc pre-validation in atomic check date: 6 weeks ago config: arc-randconfig-r003-20220327 (https://download.01.org/0day-ci/archive/20220328/202203280415.IGMBaNAP-lkp@intel.com/config) compiler: arceb-elf-gcc (GCC) 11.2.0 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://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 17ce8a6907f77b7ac97ddaa071d8a1f6e06ce85b # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 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 All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:1617:6: warning: no previous prototype for 'is_timing_changed' [-Wmissing-prototypes] 1617 | bool is_timing_changed(struct dc_stream_state *cur_stream, | ^~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/inc/core_types.h:32, from drivers/gpu/drm/amd/amdgpu/../display/dc/inc/resource.h:28, from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:30: drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:127:22: warning: 'SYNAPTICS_DEVICE_ID' defined but not used [-Wunused-const-variable=] 127 | static const uint8_t SYNAPTICS_DEVICE_ID[] = "SYNA"; | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:124:22: warning: 'DP_SINK_DEVICE_STR_ID_2' defined but not used [-Wunused-const-variable=] 124 | static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5, 0}; | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:123:22: warning: 'DP_SINK_DEVICE_STR_ID_1' defined but not used [-Wunused-const-variable=] 123 | static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3, 0}; | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/is_timing_changed +1617 drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c 1616 > 1617 bool is_timing_changed(struct dc_stream_state *cur_stream, 1618 struct dc_stream_state *new_stream) 1619 { 1620 if (cur_stream == NULL) 1621 return true; 1622 1623 /* If output color space is changed, need to reprogram info frames */ 1624 if (cur_stream->output_color_space != new_stream->output_color_space) 1625 return true; 1626 1627 return memcmp( 1628 &cur_stream->timing, 1629 &new_stream->timing, 1630 sizeof(struct dc_crtc_timing)) != 0; 1631 } 1632 -- 0-DAY CI Kernel Test Service https://01.org/lkp