Hi Eddie, kernel test robot noticed the following build warnings: [auto build test WARNING on andi-shyti/i2c/i2c-host] [also build test WARNING on robh/for-next broonie-spi/for-next linus/master v6.9 next-20240517] [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/Eddie-James/fsi-hub-Set-master-index-to-link-number-plus-one/20240517-023205 base: git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux.git i2c/i2c-host patch link: https://lore.kernel.org/r/20240516181907.3468796-38-eajames%40linux.ibm.com patch subject: [PATCH v3 37/40] fsi: core: Add different types of CFAM config: i386-buildonly-randconfig-002-20240517 (https://download.01.org/0day-ci/archive/20240517/202405172019.j3pOURPP-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240517/202405172019.j3pOURPP-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/202405172019.j3pOURPP-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/fsi/fsi-core.c:1113:27: warning: no previous prototype for function 'fsi_get_cfam_type' [-Wmissing-prototypes] 1113 | const struct device_type *fsi_get_cfam_type(u32 id) | ^ drivers/fsi/fsi-core.c:1113:7: note: declare 'static' if the function is not intended to be used outside of this translation unit 1113 | const struct device_type *fsi_get_cfam_type(u32 id) | ^ | static 1 warning generated. vim +/fsi_get_cfam_type +1113 drivers/fsi/fsi-core.c 1112 > 1113 const struct device_type *fsi_get_cfam_type(u32 id) 1114 { 1115 u32 major = (id & 0xf00) >> 8; 1116 u32 minor = (id & 0xf0) >> 4; 1117 1118 switch (major) { 1119 case 0x9: 1120 return &cfam_s_type; 1121 case 0xc: 1122 if (minor == 0) 1123 return &cfam_ody_type; 1124 fallthrough; 1125 case 0xd: 1126 default: 1127 return &cfam_type; 1128 } 1129 } 1130 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki