Hi Mao, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20231107] [cannot apply to robh/for-next linus/master v6.6 v6.6-rc7 v6.6-rc6 v6.6] [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/Mao-Jinlong/coresight-Add-remote-etm-support/20231107-141331 base: next-20231107 patch link: https://lore.kernel.org/r/20231107060939.13449-2-quic_jinlmao%40quicinc.com patch subject: [PATCH v1 1/2] coresight: Add remote etm support config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20231108/202311081053.fWRkXGH0-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231108/202311081053.fWRkXGH0-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/202311081053.fWRkXGH0-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/hwtracing/coresight/coresight-remote-etm.c:312:12: warning: no previous prototype for 'remote_etm_init' [-Wmissing-prototypes] 312 | int __init remote_etm_init(void) | ^~~~~~~~~~~~~~~ >> drivers/hwtracing/coresight/coresight-remote-etm.c:318:13: warning: no previous prototype for 'remote_etm_exit' [-Wmissing-prototypes] 318 | void __exit remote_etm_exit(void) | ^~~~~~~~~~~~~~~ vim +/remote_etm_init +312 drivers/hwtracing/coresight/coresight-remote-etm.c 311 > 312 int __init remote_etm_init(void) 313 { 314 return platform_driver_register(&remote_etm_driver); 315 } 316 module_init(remote_etm_init); 317 > 318 void __exit remote_etm_exit(void) 319 { 320 platform_driver_unregister(&remote_etm_driver); 321 } 322 module_exit(remote_etm_exit); 323 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
