Hi Bhanuprakash, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on drm-tip/drm-tip next-20220408] [cannot apply to drm/drm-next v5.18-rc1] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Bhanuprakash-Modem/Expose-max-and-current-bpc-via-debugfs/20220408-145638 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: s390-randconfig-r022-20220408 (https://download.01.org/0day-ci/archive/20220408/202204082024.SJWgNUte-lkp@xxxxxxxxx/config) compiler: s390-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://github.com/intel-lab-lkp/linux/commit/25c70426c3d3454fc0c82bc71b101bf7b8bdf11f git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Bhanuprakash-Modem/Expose-max-and-current-bpc-via-debugfs/20220408-145638 git checkout 25c70426c3d3454fc0c82bc71b101bf7b8bdf11f # 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=s390 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 errors (new ones prefixed by >>): In file included from drivers/gpu/drm/amd/amdgpu/../display/dmub/dmub_srv.h:67, from drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:35: drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h: In function 'dmub_rb_flush_pending': drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h:2961:26: warning: variable 'temp' set but not used [-Wunused-but-set-variable] 2961 | uint64_t temp; | ^~~~ drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c: In function 'amdgpu_dm_crtc_late_register': >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6614:9: error: implicit declaration of function 'crtc_debugfs_init'; did you mean 'amdgpu_debugfs_init'? [-Werror=implicit-function-declaration] 6614 | crtc_debugfs_init(crtc); | ^~~~~~~~~~~~~~~~~ | amdgpu_debugfs_init In file included from drivers/gpu/drm/amd/amdgpu/../display/dc/inc/core_types.h:32, from drivers/gpu/drm/amd/amdgpu/../display/dc/inc/link_enc_cfg.h:33, from drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:32: At top level: drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:128:22: warning: 'SYNAPTICS_DEVICE_ID' defined but not used [-Wunused-const-variable=] 128 | static const uint8_t SYNAPTICS_DEVICE_ID[] = "SYNA"; | ^~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/include/ddc_service_types.h:125:22: warning: 'DP_SINK_DEVICE_STR_ID_2' defined but not used [-Wunused-const-variable=] 125 | 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:124:22: warning: 'DP_SINK_DEVICE_STR_ID_1' defined but not used [-Wunused-const-variable=] 124 | static const uint8_t DP_SINK_DEVICE_STR_ID_1[] = {7, 1, 8, 7, 3, 0}; | ^~~~~~~~~~~~~~~~~~~~~~~ cc1: some warnings being treated as errors vim +6614 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c e7b07ceef2a650 Harry Wentland 2017-08-10 6611 e69231c4451ae0 Wayne Lin 2021-03-08 6612 static int amdgpu_dm_crtc_late_register(struct drm_crtc *crtc) 86bc221918925a Wayne Lin 2021-03-02 6613 { 86bc221918925a Wayne Lin 2021-03-02 @6614 crtc_debugfs_init(crtc); 86bc221918925a Wayne Lin 2021-03-02 6615 86bc221918925a Wayne Lin 2021-03-02 6616 return 0; 86bc221918925a Wayne Lin 2021-03-02 6617 } 86bc221918925a Wayne Lin 2021-03-02 6618 -- 0-DAY CI Kernel Test Service https://01.org/lkp