Hi Daniele, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/Daniele-Ceraolo-Spurio/drm-i915-gsc-fixes-and-updates-for-GSC-memory-allocation/20230606-102510 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip patch link: https://lore.kernel.org/r/20230606022402.2048235-5-daniele.ceraolospurio%40intel.com patch subject: [PATCH v2 4/5] drm/i915/mtl/gsc: Add a gsc_info debugfs config: i386-randconfig-i015-20230606 (https://download.01.org/0day-ci/archive/20230606/202306061505.rzhdExYJ-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git remote add drm-tip git://anongit.freedesktop.org/drm/drm-tip git fetch drm-tip drm-tip git checkout drm-tip/drm-tip b4 shazam https://lore.kernel.org/r/20230606022402.2048235-5-daniele.ceraolospurio@xxxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/i915/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306061505.rzhdExYJ-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_debugfs.c:28:6: warning: no previous prototype for function 'intel_gsc_uc_debugfs_register' [-Wmissing-prototypes] void intel_gsc_uc_debugfs_register(struct intel_gsc_uc *gsc_uc, struct dentry *root) ^ drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_debugfs.c:28:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void intel_gsc_uc_debugfs_register(struct intel_gsc_uc *gsc_uc, struct dentry *root) ^ static 1 warning generated. vim +/intel_gsc_uc_debugfs_register +28 drivers/gpu/drm/i915/gt/uc/intel_gsc_uc_debugfs.c 27 > 28 void intel_gsc_uc_debugfs_register(struct intel_gsc_uc *gsc_uc, struct dentry *root) -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
