Hi Ankit, kernel test robot noticed the following build errors:
[auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on next-20241016] [cannot apply to drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.12-rc3] [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/Ankit-Nautiyal/drm-i915-display-Prepare-for-dsc-3-stream-splitter/20241014-161007 base: git://anongit.freedesktop.org/drm-intel for-linux-next patch link: https://lore.kernel.org/r/20241014081000.2844245-7-ankit.k.nautiyal%40intel.com patch subject: [PATCH 6/9] drm/i915/display: Add DSC pixel replication config: x86_64-randconfig-012-20241015 (https://download.01.org/0day-ci/archive/20241016/202410161836.lqv7k89f-...@intel.com/config) compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241016/202410161836.lqv7k89f-...@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202410161836.lqv7k89f-...@intel.com/ All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/display/intel_vdsc.c:1022:6: error: variable 'dss_ctl3' >> is uninitialized when used here [-Werror,-Wuninitialized] 1022 | if (dss_ctl3 & DSC_PIXEL_REPLICATION_MASK) | ^~~~~~~~ drivers/gpu/drm/i915/display/intel_vdsc.c:991:34: note: initialize the variable 'dss_ctl3' to silence this warning 991 | u32 dss_ctl1, dss_ctl2, dss_ctl3; | ^ | = 0 1 error generated. vim +/dss_ctl3 +1022 drivers/gpu/drm/i915/display/intel_vdsc.c 983 984 void intel_dsc_get_config(struct intel_crtc_state *crtc_state) 985 { 986 struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc); 987 struct drm_i915_private *dev_priv = to_i915(crtc->base.dev); 988 enum transcoder cpu_transcoder = crtc_state->cpu_transcoder; 989 enum intel_display_power_domain power_domain; 990 intel_wakeref_t wakeref; 991 u32 dss_ctl1, dss_ctl2, dss_ctl3; 992 993 if (!intel_dsc_source_support(crtc_state)) 994 return; 995 996 power_domain = intel_dsc_power_domain(crtc, cpu_transcoder); 997 998 wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain); 999 if (!wakeref) 1000 return; 1001 1002 dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc, cpu_transcoder)); 1003 dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc, cpu_transcoder)); 1004 1005 if (IS_BATTLEMAGE(dev_priv)) 1006 dss_ctl3 = intel_de_read(dev_priv, BMG_PIPE_DSS_CTL3(crtc_state->cpu_transcoder)); 1007 1008 crtc_state->dsc.compression_enable = dss_ctl2 & VDSC0_ENABLE; 1009 if (!crtc_state->dsc.compression_enable) 1010 goto out; 1011 1012 if (dss_ctl1 & JOINER_ENABLE) { 1013 if (dss_ctl2 & (VDSC2_ENABLE | SMALL_JOINER_CONFIG_3_ENGINES)) 1014 crtc_state->dsc.dsc_split = INTEL_DSC_SPLIT_3_STREAMS; 1015 1016 else if (dss_ctl2 & VDSC1_ENABLE) 1017 crtc_state->dsc.dsc_split = INTEL_DSC_SPLIT_2_STREAMS; 1018 } else { 1019 crtc_state->dsc.dsc_split = INTEL_DSC_SPLIT_DISABLED; 1020 } 1021 > 1022 if (dss_ctl3 & DSC_PIXEL_REPLICATION_MASK) 1023 crtc_state->dsc.pixel_replication_count = 1024 dss_ctl3 & DSC_PIXEL_REPLICATION_MASK; 1025 1026 intel_dsc_get_pps_config(crtc_state); 1027 out: 1028 intel_display_power_put(dev_priv, power_domain, wakeref); 1029 } 1030 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
