Hi Kalyan, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: e8f3274774b45b5f4e9e3d5cad7ff9f43ae3add5 commit: 04d9044f6c577948609c03b4e33b8fbc8b87c4b1 [9800/11634] drm/msm/dpu: add support for clk and bw scaling for display config: arm-randconfig-r035-20200520 (attached as .config) compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0 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 git checkout 04d9044f6c577948609c03b4e33b8fbc8b87c4b1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): arm-linux-gnueabi-ld: drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.o: in function `_dpu_core_perf_crtc_update_bus': arm-linux-gnueabi-ld: drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c:263: undefined reference to `__aeabi_uldivmod' arm-linux-gnueabi-ld: drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.o: in function `_dpu_core_perf_calc_bw': drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c:57: undefined reference to `__aeabi_uldivmod' arm-linux-gnueabi-ld: drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c:57: undefined reference to `__aeabi_uldivmod' arm-linux-gnueabi-ld: drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c:57: undefined reference to `__aeabi_uldivmod' arm-linux-gnueabi-ld: drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.o:drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c:93: more undefined references to `__aeabi_uldivmod' follow vim +259 drivers/gpu/drm/msm/disp/dpu1/dpu_core_perf.c 229 230 static int _dpu_core_perf_crtc_update_bus(struct dpu_kms *kms, 231 struct drm_crtc *crtc) 232 { 233 struct dpu_core_perf_params perf = { 0 }; 234 enum dpu_crtc_client_type curr_client_type 235 = dpu_crtc_get_client_type(crtc); 236 struct drm_crtc *tmp_crtc; 237 struct dpu_crtc_state *dpu_cstate; 238 int i, ret = 0; 239 u64 avg_bw; 240 241 drm_for_each_crtc(tmp_crtc, crtc->dev) { 242 if (tmp_crtc->enabled && 243 curr_client_type == 244 dpu_crtc_get_client_type(tmp_crtc)) { 245 dpu_cstate = to_dpu_crtc_state(tmp_crtc->state); 246 247 perf.max_per_pipe_ib = max(perf.max_per_pipe_ib, 248 dpu_cstate->new_perf.max_per_pipe_ib); 249 250 perf.bw_ctl += dpu_cstate->new_perf.bw_ctl; 251 252 DPU_DEBUG("crtc=%d bw=%llu paths:%d\n", 253 tmp_crtc->base.id, 254 dpu_cstate->new_perf.bw_ctl, kms->num_paths); 255 } 256 } 257 258 avg_bw = kms->num_paths ? 260 261 for (i = 0; i < kms->num_paths; i++) 262 icc_set_bw(kms->path[i], 263 Bps_to_icc(avg_bw), (perf.max_per_pipe_ib)); 264 265 return ret; 266 } 267 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org