Hi Werner, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on next-20210503] [cannot apply to v5.12] [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/Werner-Sembach/drm-i915-display-Try-YCbCr420-color-when-RGB-fails/20210504-022344 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: i386-randconfig-m021-20210503 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/8ff372234cbfe66eb5a59c2cda6a44961f5a9266 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Werner-Sembach/drm-i915-display-Try-YCbCr420-color-when-RGB-fails/20210504-022344 git checkout 8ff372234cbfe66eb5a59c2cda6a44961f5a9266 # save the attached .config to linux build tree make W=1 W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/display/intel_hdmi.c:2108:5: error: no previous prototype for 'intel_hdmi_compute_output_format' [-Werror=missing-prototypes] 2108 | int intel_hdmi_compute_output_format(struct intel_encoder *encoder, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/intel_hdmi_compute_output_format +2108 drivers/gpu/drm/i915/display/intel_hdmi.c 2107 > 2108 int intel_hdmi_compute_output_format(struct intel_encoder *encoder, 2109 struct intel_crtc_state *crtc_state, 2110 const struct drm_connector_state *conn_state) 2111 { 2112 const struct drm_connector *connector = conn_state->connector; 2113 const struct drm_display_mode *adjusted_mode = &crtc_state->hw.adjusted_mode; 2114 int ret; 2115 2116 if (connector->ycbcr_420_allowed && drm_mode_is_420_only(&connector->display_info, adjusted_mode)) 2117 crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR420; 2118 else 2119 crtc_state->output_format = INTEL_OUTPUT_FORMAT_RGB; 2120 2121 ret = intel_hdmi_compute_clock(encoder, crtc_state); 2122 2123 return ret; 2124 } 2125 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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