[kbuild-all] [cxl-cxl:pending 20/38] drivers/nvdimm/label.c:749:25: warning: no previous prototype for function 'uuid_to_nvdimm_cclass'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git pending head: fa809cc6feedcd2575b63def7135dfaf066266bb commit: ed37942d3f53ae55c077704f6a8e6306d96169f6 [20/38] libnvdimm/labels: Add address-abstraction uuid definitions config: x86_64-randconfig-a011-20210814 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1f7b25ea76a925aca690da28de9d78db7ca99d0c) 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 # https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=ed... git remote add cxl-cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git git fetch --no-tags cxl-cxl pending git checkout ed37942d3f53ae55c077704f6a8e6306d96169f6 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 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 >>): enum nvdimm_claim_class uuid_to_nvdimm_cclass(uuid_t *uuid) ^ drivers/nvdimm/label.c:749:1: note: declare 'static' if the function is not intended to be used outside of this translation unit enum nvdimm_claim_class uuid_to_nvdimm_cclass(uuid_t *uuid) ^ static 1 warning generated. vim +/uuid_to_nvdimm_cclass +749 drivers/nvdimm/label.c 747 748 /* CXL labels store UUIDs instead of GUIDs for the same data */ 750 { 751 if (uuid_equal(uuid, &nvdimm_btt_uuid)) 752 return NVDIMM_CCLASS_BTT; 753 else if (uuid_equal(uuid, &nvdimm_btt2_uuid)) 754 return NVDIMM_CCLASS_BTT2; 755 else if (uuid_equal(uuid, &nvdimm_pfn_uuid)) 756 return NVDIMM_CCLASS_PFN; 757 else if (uuid_equal(uuid, &nvdimm_dax_uuid)) 758 return NVDIMM_CCLASS_DAX; 759 else if (uuid_equal(uuid, &uuid_null)) 760 return NVDIMM_CCLASS_NONE; 761 762 return NVDIMM_CCLASS_UNKNOWN; 763 } 764 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org