Hi Dmitry, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on next-20200612] [cannot apply to tegra/for-next robh/for-next v5.7] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Dmitry-Osipenko/Support-DRM-bridges-on-NVIDIA-Tegra/20200609-213026 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git abfbb29297c27e3f101f348dc9e467b0fe70f919 config: arm64-randconfig-r026-20200612 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3b43f006294971b8049d4807110032169780e5b8) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>, old ones prefixed by <<): >> drivers/gpu/drm/tegra/rgb.c:100:48: warning: unused variable 'tegra_rgb_connector_helper_funcs' [-Wunused-const-variable] static const struct drm_connector_helper_funcs tegra_rgb_connector_helper_funcs = { ^ 1 warning generated. vim +/tegra_rgb_connector_helper_funcs +100 drivers/gpu/drm/tegra/rgb.c 3b0e58554873d1 Thierry Reding 2014-12-16 99 3b0e58554873d1 Thierry Reding 2014-12-16 @100 static const struct drm_connector_helper_funcs tegra_rgb_connector_helper_funcs = { 3b0e58554873d1 Thierry Reding 2014-12-16 101 .get_modes = tegra_output_connector_get_modes, 3b0e58554873d1 Thierry Reding 2014-12-16 102 .mode_valid = tegra_rgb_connector_mode_valid, 3b0e58554873d1 Thierry Reding 2014-12-16 103 }; 3b0e58554873d1 Thierry Reding 2014-12-16 104 :::::: The code at line 100 was first introduced by commit :::::: 3b0e58554873d1034beef737f15c7aa46492ff98 drm/tegra: rgb: Demidlayer :::::: TO: Thierry Reding <treding@xxxxxxxxxx> :::::: CC: Thierry Reding <treding@xxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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