tree: https://gitlab.freedesktop.org/agd5f/linux.git drm-next head: eaae0714f4a82df81a60c6aae74c568e8974a716 commit: 9c0dc981c97dc7a439469dff76bacf6415514496 [49/92] drm/amd/display: Reduce dmesg error to a debug print config: riscv-randconfig-r004-20211118 (attached as .config) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu git remote add agd5f https://gitlab.freedesktop.org/agd5f/linux.git git fetch --no-tags agd5f drm-next git checkout 9c0dc981c97dc7a439469dff76bacf6415514496 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c:37: In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.h:30: In file included from drivers/gpu/drm/amd/amdgpu/../display/dmub/dmub_srv.h:67: drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h:2892:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable] uint64_t temp; ^ DC_LOG_DP2("%s: Read LTTPR caps data failed.\n", __func__); ^ 1 warning and 1 error generated. vim +/DC_LOG_DP2 +4457 drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link_dp.c 4446 4447 if (link->lttpr_mode == LTTPR_MODE_NON_TRANSPARENT || link->lttpr_mode == LTTPR_MODE_TRANSPARENT) { 4448 /* By reading LTTPR capability, RX assumes that we will enable 4449 * LTTPR extended aux timeout if LTTPR is present. 4450 */ 4451 status = core_link_read_dpcd( 4452 link, 4453 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV, 4454 lttpr_dpcd_data, 4455 sizeof(lttpr_dpcd_data)); 4456 if (status != DC_OK) { 4458 return false; 4459 } 4460 4461 link->dpcd_caps.lttpr_caps.revision.raw = 4462 lttpr_dpcd_data[DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV - 4463 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; 4464 4465 link->dpcd_caps.lttpr_caps.max_link_rate = 4466 lttpr_dpcd_data[DP_MAX_LINK_RATE_PHY_REPEATER - 4467 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; 4468 4469 link->dpcd_caps.lttpr_caps.phy_repeater_cnt = 4470 lttpr_dpcd_data[DP_PHY_REPEATER_CNT - 4471 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; 4472 4473 link->dpcd_caps.lttpr_caps.max_lane_count = 4474 lttpr_dpcd_data[DP_MAX_LANE_COUNT_PHY_REPEATER - 4475 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; 4476 4477 link->dpcd_caps.lttpr_caps.mode = 4478 lttpr_dpcd_data[DP_PHY_REPEATER_MODE - 4479 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; 4480 4481 link->dpcd_caps.lttpr_caps.max_ext_timeout = 4482 lttpr_dpcd_data[DP_PHY_REPEATER_EXTENDED_WAIT_TIMEOUT - 4483 DP_LT_TUNABLE_PHY_REPEATER_FIELD_DATA_STRUCTURE_REV]; 4484 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org