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Wed, 04 May 2022 07:32:56 +0000 Date: Wed, 4 May 2022 15:32:30 +0800 From: kernel test robot To: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Cc: llvm@lists.linux.dev, kbuild-all@lists.01.org, linux-kernel@vger.kernel.org Subject: [vsyrjala:crtc_clock_compute_8 10/26] drivers/gpu/drm/i915/display/intel_ddi.c:325:5: error: no previous prototype for function 'intel_crtc_dotclock' Message-ID: <202205041506.Q9YdhHrE-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://github.com/vsyrjala/linux.git crtc_clock_compute_8 head: aee27a93a2e9c552d016d4eadaff5aa87dccce13 commit: eb839775996f072098b810f91bc34757d1ea008e [10/26] drm/i915: Extract intel_crtc_dotclock() config: x86_64-randconfig-r023-20220502 (https://download.01.org/0day-ci/archive/20220504/202205041506.Q9YdhHrE-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 363b3a645a1e30011cc8da624f13dac5fd915628) 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/vsyrjala/linux/commit/eb839775996f072098b810f91bc34757d1ea008e git remote add vsyrjala https://github.com/vsyrjala/linux.git git fetch --no-tags vsyrjala crtc_clock_compute_8 git checkout eb839775996f072098b810f91bc34757d1ea008e # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/display/intel_ddi.c:325:5: error: no previous prototype for function 'intel_crtc_dotclock' [-Werror,-Wmissing-prototypes] int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config) ^ drivers/gpu/drm/i915/display/intel_ddi.c:325:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config) ^ static 1 error generated. vim +/intel_crtc_dotclock +325 drivers/gpu/drm/i915/display/intel_ddi.c 324 > 325 int intel_crtc_dotclock(const struct intel_crtc_state *pipe_config) 326 { 327 int dotclock; 328 329 if (intel_crtc_has_dp_encoder(pipe_config)) 330 dotclock = intel_dotclock_calculate(pipe_config->port_clock, 331 &pipe_config->dp_m_n); 332 else if (pipe_config->has_hdmi_sink && pipe_config->pipe_bpp > 24) 333 dotclock = pipe_config->port_clock * 24 / pipe_config->pipe_bpp; 334 else 335 dotclock = pipe_config->port_clock; 336 337 if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 && 338 !intel_crtc_has_dp_encoder(pipe_config)) 339 dotclock *= 2; 340 341 if (pipe_config->pixel_multiplier) 342 dotclock /= pipe_config->pixel_multiplier; 343 344 return dotclock; 345 } 346 -- 0-DAY CI Kernel Test Service https://01.org/lkp