Hi Frank, kernel test robot noticed the following build warnings: [auto build test WARNING on tty/tty-testing] [also build test WARNING on tty/tty-next tty/tty-linus robh/for-next linus/master v6.7 next-20240111] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Frank-Li/i3c-add-target-mode-support/20240111-015711 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing patch link: https://lore.kernel.org/r/20240110175221.2335480-4-Frank.Li%40nxp.com patch subject: [PATCH v2 3/7] Documentation: i3c: Add I3C target mode controller and function reproduce: (https://download.01.org/0day-ci/archive/20240112/202401120713.p7a3HyFl-lkp@xxxxxxxxx/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202401120713.p7a3HyFl-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> Warning: Documentation/driver-api/i3c/target/i3c-target-cfs.rst references a file that doesn't exist: Documentation/I3C/target/pci-target.rst >> Documentation/driver-api/i3c/target/i3c-target.rst:38: WARNING: Title underline too short. >> Documentation/driver-api/i3c/target/i3c-target-cfs.rst:73: WARNING: Title underline too short. >> Documentation/driver-api/i3c/target/i3c-tty-howto.rst:45: WARNING: Title underline too short. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki