tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 2e9a9857569ec27e64d2ddd01294bbe3c736acb1 commit: eff5e11508244cba6b24e26d3673f06332c61cfc [2014/2869] drm/amd/display: extract set stream attribute to link_hwss config: ia64-randconfig-r001-20220406 (https://download.01.org/0day-ci/archive/20220407/202204072055.M8g3wHuK-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 11.2.0 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 # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=eff5e11508244cba6b24e26d3673f06332c61cfc 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 eff5e11508244cba6b24e26d3673f06332c61cfc # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/gpu/drm/ 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/dc/virtual/virtual_link_hwss.c:32:6: warning: no previous prototype for 'virtual_setup_stream_attribute' [-Wmissing-prototypes] 32 | void virtual_setup_stream_attribute(struct pipe_ctx *pipe_ctx) | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/inc/core_types.h:32, from drivers/gpu/drm/amd/amdgpu/../display/dc/virtual/virtual_link_hwss.h:28, from drivers/gpu/drm/amd/amdgpu/../display/dc/virtual/virtual_link_hwss.c:26: drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:129:22: warning: 'SYNAPTICS_DEVICE_ID' defined but not used [-Wunused-const-variable=] 129 | static const uint8_t SYNAPTICS_DEVICE_ID[] = "SYNA"; | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:126:22: warning: 'DP_SINK_DEVICE_STR_ID_2' defined but not used [-Wunused-const-variable=] 126 | static const uint8_t DP_SINK_DEVICE_STR_ID_2[] = {7, 1, 8, 7, 5, 0}; | ^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:125:22: warning: 'DP_SINK_DEVICE_STR_ID_1' defined but not used [-Wunused-const-variable=] 125 | static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3, 0}; | ^~~~~~~~~~~~~~~~~~~~~~~ vim +/virtual_setup_stream_attribute +32 drivers/gpu/drm/amd/amdgpu/../display/dc/virtual/virtual_link_hwss.c 31 > 32 void virtual_setup_stream_attribute(struct pipe_ctx *pipe_ctx) 33 { 34 } 35 -- 0-DAY CI Kernel Test Service https://01.org/lkp