tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: abaf6f60176f1ae9d946d63e4db63164600b7b1a commit: f9b4f20c4777bd305ef04f9485294692bc65968c [11345/11865] drm/amd/display: Add Freesync HDMI support to DM config: x86_64-randconfig-a013-20210220 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project c9439ca36342fb6013187d0a69aef92736951476) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=f9b4f20c4777bd305ef04f9485294692bc65968c git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout f9b4f20c4777bd305ef04f9485294692bc65968c # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:9804:38: warning: variable 'i' is uninitialized when used here [-Wuninitialized] timing = &edid->detailed_timings[i]; ^ drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:9714:7: note: initialize the variable 'i' to silence this warning int i; ^ = 0 1 warning generated. vim +/i +9804 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c 9710 9711 void amdgpu_dm_update_freesync_caps(struct drm_connector *connector, 9712 struct edid *edid) 9713 { 9714 int i; 9715 struct detailed_timing *timing; 9716 struct detailed_non_pixel *data; 9717 struct detailed_data_monitor_range *range; 9718 struct amdgpu_dm_connector *amdgpu_dm_connector = 9719 to_amdgpu_dm_connector(connector); 9720 struct dm_connector_state *dm_con_state = NULL; 9721 9722 struct drm_device *dev = connector->dev; 9723 struct amdgpu_device *adev = drm_to_adev(dev); 9724 bool freesync_capable = false; 9725 struct amdgpu_hdmi_vsdb_info vsdb_info = {0}; 9726 bool hdmi_valid_vsdb_found = false; 9727 9728 if (!connector->state) { 9729 DRM_ERROR("%s - Connector has no state", __func__); 9730 goto update; 9731 } 9732 9733 if (!edid) { 9734 dm_con_state = to_dm_connector_state(connector->state); 9735 9736 amdgpu_dm_connector->min_vfreq = 0; 9737 amdgpu_dm_connector->max_vfreq = 0; 9738 amdgpu_dm_connector->pixel_clock_mhz = 0; 9739 9740 goto update; 9741 } 9742 9743 dm_con_state = to_dm_connector_state(connector->state); 9744 9745 if (!amdgpu_dm_connector->dc_sink) { 9746 DRM_ERROR("dc_sink NULL, could not add free_sync module.\n"); 9747 goto update; 9748 } 9749 if (!adev->dm.freesync_module) 9750 goto update; 9751 9752 9753 if (amdgpu_dm_connector->dc_sink->sink_signal == SIGNAL_TYPE_DISPLAY_PORT 9754 || amdgpu_dm_connector->dc_sink->sink_signal == SIGNAL_TYPE_EDP) { 9755 bool edid_check_required = false; 9756 9757 if (edid) { 9758 edid_check_required = is_dp_capable_without_timing_msa( 9759 adev->dm.dc, 9760 amdgpu_dm_connector); 9761 } 9762 9763 if (edid_check_required == true && (edid->version > 1 || 9764 (edid->version == 1 && edid->revision > 1))) { 9765 for (i = 0; i < 4; i++) { 9766 9767 timing = &edid->detailed_timings[i]; 9768 data = &timing->data.other_data; 9769 range = &data->data.range; 9770 /* 9771 * Check if monitor has continuous frequency mode 9772 */ 9773 if (data->type != EDID_DETAIL_MONITOR_RANGE) 9774 continue; 9775 /* 9776 * Check for flag range limits only. If flag == 1 then 9777 * no additional timing information provided. 9778 * Default GTF, GTF Secondary curve and CVT are not 9779 * supported 9780 */ 9781 if (range->flags != 1) 9782 continue; 9783 9784 amdgpu_dm_connector->min_vfreq = range->min_vfreq; 9785 amdgpu_dm_connector->max_vfreq = range->max_vfreq; 9786 amdgpu_dm_connector->pixel_clock_mhz = 9787 range->pixel_clock_mhz * 10; 9788 9789 connector->display_info.monitor_range.min_vfreq = range->min_vfreq; 9790 connector->display_info.monitor_range.max_vfreq = range->max_vfreq; 9791 9792 break; 9793 } 9794 9795 if (amdgpu_dm_connector->max_vfreq - 9796 amdgpu_dm_connector->min_vfreq > 10) { 9797 9798 freesync_capable = true; 9799 } 9800 } 9801 } else if (edid && amdgpu_dm_connector->dc_sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) { 9802 hdmi_valid_vsdb_found = parse_hdmi_amd_vsdb(amdgpu_dm_connector, edid, &vsdb_info); 9803 if (hdmi_valid_vsdb_found && vsdb_info.freesync_supported) { > 9804 timing = &edid->detailed_timings[i]; 9805 data = &timing->data.other_data; 9806 9807 amdgpu_dm_connector->min_vfreq = vsdb_info.min_refresh_rate_hz; 9808 amdgpu_dm_connector->max_vfreq = vsdb_info.max_refresh_rate_hz; 9809 if (amdgpu_dm_connector->max_vfreq - amdgpu_dm_connector->min_vfreq > 10) 9810 freesync_capable = true; 9811 9812 connector->display_info.monitor_range.min_vfreq = vsdb_info.min_refresh_rate_hz; 9813 connector->display_info.monitor_range.max_vfreq = vsdb_info.max_refresh_rate_hz; 9814 } 9815 } 9816 9817 update: 9818 if (dm_con_state) 9819 dm_con_state->freesync_capable = freesync_capable; 9820 9821 if (connector->vrr_capable_property) 9822 drm_connector_set_vrr_capable_property(connector, 9823 freesync_capable); 9824 } 9825 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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