tree: git://anongit.freedesktop.org/tegra/linux.git drm/tegra/for-next head: b19502d1a683c11f6f2c92ad63c61288b0fbe1a1 commit: cdf631031f3e574b76afed51bda0ccc9d71d4a4e [9/14] drm/tegra: Implement new UAPI config: arm64-randconfig-r025-20210714 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0e49c54a8cbd3e779e5526a5888c683c01cc3c50) 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 git remote add tegra-drm git://anongit.freedesktop.org/tegra/linux.git git fetch --no-tags tegra-drm drm/tegra/for-next git checkout cdf631031f3e574b76afed51bda0ccc9d71d4a4e # 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(a)intel.com&gt; All warnings (new ones prefixed by >>): int tegra_drm_ioctl_gem_create(struct drm_device *drm, void *data, ^ drivers/gpu/drm/tegra/uapi.c:278:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tegra_drm_ioctl_gem_create(struct drm_device *drm, void *data, ^ static int tegra_drm_ioctl_gem_mmap(struct drm_device *drm, void *data, ^ drivers/gpu/drm/tegra/uapi.c:295:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int tegra_drm_ioctl_gem_mmap(struct drm_device *drm, void *data, ^ static 2 warnings generated. vim +/tegra_drm_ioctl_gem_create +278 drivers/gpu/drm/tegra/uapi.c 277 279 struct drm_file *file) 280 { 281 struct drm_tegra_gem_create *args = data; 282 struct tegra_bo *bo; 283 284 if (args->flags) 285 return -EINVAL; 286 287 bo = tegra_bo_create_with_handle(file, drm, args->size, args->flags, 288 &args->handle); 289 if (IS_ERR(bo)) 290 return PTR_ERR(bo); 291 292 return 0; 293 } 294 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org