tree: https://gitlab.freedesktop.org/agd5f/linux.git drm-next head: 076172cdc7ab4983ed7596a53b95851849269e5a commit: af45a5fe4f0af159db23e8bf851115b61031c648 [25/34] drm/amd/display: Protect update_bw_bounding_box FPU code. config: riscv-randconfig-r033-20220214 (https://download.01.org/0day-ci/archive/20220215/202202151850.04BAOxth-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 37f422f4ac31c8b8041c6b62065263314282dab6) 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 af45a5fe4f0af159db23e8bf851115b61031c648 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash 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.c:64: 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:2921:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable] uint64_t temp; ^ DC_FP_START(); ^ DC_FP_END(); ^ 1 warning and 2 errors generated. vim +/DC_FP_START +991 drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc.c 989 990 if (dc->res_pool->funcs->update_bw_bounding_box) { 992 dc->res_pool->funcs->update_bw_bounding_box(dc, dc->clk_mgr->bw_params); 994 } 995 996 /* Creation of current_state must occur after dc->dml 997 * is initialized in dc_create_resource_pool because 998 * on creation it copies the contents of dc->dml 999 */ 1000 1001 dc->current_state = dc_create_state(dc); 1002 1003 if (!dc->current_state) { 1004 dm_error("%s: failed to create validate ctx\n", __func__); 1005 goto fail; 1006 } 1007 1008 if (!create_links(dc, init_params->num_virtual_links)) 1009 goto fail; 1010 1011 /* Create additional DIG link encoder objects if fewer than the platform 1012 * supports were created during link construction. 1013 */ 1014 if (!create_link_encoders(dc)) 1015 goto fail; 1016 1017 dc_resource_state_construct(dc, dc->current_state); 1018 1019 return true; 1020 1021 fail: 1022 return false; 1023 } 1024 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org