tree: https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git v5.10-rc2-stable head: fff950790f1aeb42f8b38de431ac45069cf84a73 commit: 7e4f53af06ab0dbc6a416c34cd76400680a02e44 [925/936] drm/nouveau/kms/nv50-: Use downstream DP clock limits for mode validation config: x86_64-randconfig-a015-20201101 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project cc91554ebb66e8c9a4b8c67ca2f1343eaac10cf6) 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/sashal/linux-stable.git/c... git remote add sashal-linux-stable https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git git fetch --no-tags sashal-linux-stable v5.10-rc2-stable git checkout 7e4f53af06ab0dbc6a416c34cd76400680a02e44 # 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(a)intel.com&gt; All errors (new ones prefixed by >>): ret = drm_dp_read_downstream_info(aux, dpcd, ^ drivers/gpu/drm/nouveau/nouveau_dp.c:74:8: note: did you mean 'drm_dp_downstream_id'? include/drm/drm_dp_helper.h:1619:5: note: 'drm_dp_downstream_id' declared here int drm_dp_downstream_id(struct drm_dp_aux *aux, char id[6]); ^ 1 error generated. vim +/drm_dp_read_downstream_info +74 drivers/gpu/drm/nouveau/nouveau_dp.c 38 39 static enum drm_connector_status 40 nouveau_dp_probe_dpcd(struct nouveau_connector *nv_connector, 41 struct nouveau_encoder *outp) 42 { 43 struct drm_dp_aux *aux = &nv_connector->aux; 44 struct nv50_mstm *mstm = NULL; 45 int ret; 46 u8 *dpcd = outp->dp.dpcd; 47 u8 tmp; 48 49 ret = drm_dp_dpcd_read(aux, DP_DPCD_REV, dpcd, DP_RECEIVER_CAP_SIZE); 50 if (ret == DP_RECEIVER_CAP_SIZE && dpcd[DP_DPCD_REV]) { 51 ret = drm_dp_read_desc(aux, &outp->dp.desc, 52 drm_dp_is_branch(dpcd)); 53 if (ret < 0) 54 return connector_status_disconnected; 55 } else { 56 return connector_status_disconnected; 57 } 58 59 if (nouveau_mst) 60 mstm = outp->dp.mstm; 61 62 if (mstm) { 63 if (dpcd[DP_DPCD_REV] >= DP_DPCD_REV_12) { 64 ret = drm_dp_dpcd_readb(aux, DP_MSTM_CAP, &tmp); 65 if (ret < 0) 66 return connector_status_disconnected; 67 68 mstm->can_mst = !!(tmp & DP_MST_CAP); 69 } else { 70 mstm->can_mst = false; 71 } 72 } 73 75 outp->dp.downstream_ports); 76 if (ret < 0) 77 return connector_status_disconnected; 78 79 return connector_status_connected; 80 } 81 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org