Hi Andy, I love your patch! Yet something to improve: [auto build test ERROR on hch-configfs/for-next] [also build test ERROR on akpm-mm/mm-everything linus/master v6.2-rc1 next-20221226] [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/Andy-Shevchenko/uuid-Decouple-guid_t-and-uuid_le-types-and-respective-macros/20221228-213942 base: git://git.infradead.org/users/hch/configfs.git for-next patch link: https://lore.kernel.org/r/20221228133616.69278-1-andriy.shevchenko%40linux.intel.com patch subject: [PATCH v1 1/1] uuid: Decouple guid_t and uuid_le types and respective macros config: x86_64-randconfig-a006-20221226 compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1) 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://github.com/intel-lab-lkp/linux/commit/419ed69a685704bcd3f5f617181e305fb06bce0d git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Andy-Shevchenko/uuid-Decouple-guid_t-and-uuid_le-types-and-respective-macros/20221228-213942 git checkout 419ed69a685704bcd3f5f617181e305fb06bce0d # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/misc/mei/hdcp/ drivers/misc/mei/pxp/ If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All error/warnings (new ones prefixed by >>): >> drivers/misc/mei/hdcp/mei_hdcp.c:866:12: error: initializing '__u8' (aka 'unsigned char') with an expression of incompatible type 'guid_t' { .uuid = MEI_UUID_HDCP, .version = MEI_CL_VERSION_ANY }, ^~~~~~~~~~~~~ drivers/misc/mei/hdcp/mei_hdcp.c:862:23: note: expanded from macro 'MEI_UUID_HDCP' #define MEI_UUID_HDCP GUID_INIT(0xB638AB7E, 0x94E2, 0x4EA2, 0xA5, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/uuid.h:23:62: note: expanded from macro 'GUID_INIT' #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ ^ >> drivers/misc/mei/hdcp/mei_hdcp.c:866:12: warning: suggest braces around initialization of subobject [-Wmissing-braces] { .uuid = MEI_UUID_HDCP, .version = MEI_CL_VERSION_ANY }, ^~~~~~~~~~~~~ { } drivers/misc/mei/hdcp/mei_hdcp.c:862:23: note: expanded from macro 'MEI_UUID_HDCP' #define MEI_UUID_HDCP GUID_INIT(0xB638AB7E, 0x94E2, 0x4EA2, 0xA5, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/uuid.h:23:62: note: expanded from macro 'GUID_INIT' #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ ^ >> drivers/misc/mei/hdcp/mei_hdcp.c:869:1: error: definition of variable with array type needs an explicit size or an initializer MODULE_DEVICE_TABLE(mei, mei_hdcp_tbl); ^ include/linux/module.h:243:21: note: expanded from macro 'MODULE_DEVICE_TABLE' extern typeof(name) __mod_##type##__##name##_device_table \ ^ :29:1: note: expanded from here __mod_mei__mei_hdcp_tbl_device_table ^ 1 warning and 2 errors generated. -- >> drivers/misc/mei/pxp/mei_pxp.c:213:12: error: initializing '__u8' (aka 'unsigned char') with an expression of incompatible type 'guid_t' { .uuid = MEI_GUID_PXP, .version = MEI_CL_VERSION_ANY }, ^~~~~~~~~~~~ drivers/misc/mei/pxp/mei_pxp.c:209:22: note: expanded from macro 'MEI_GUID_PXP' #define MEI_GUID_PXP GUID_INIT(0xfbf6fcf1, 0x96cf, 0x4e2e, 0xA6, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/uuid.h:23:62: note: expanded from macro 'GUID_INIT' #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ ^ >> drivers/misc/mei/pxp/mei_pxp.c:213:12: warning: suggest braces around initialization of subobject [-Wmissing-braces] { .uuid = MEI_GUID_PXP, .version = MEI_CL_VERSION_ANY }, ^~~~~~~~~~~~ { } drivers/misc/mei/pxp/mei_pxp.c:209:22: note: expanded from macro 'MEI_GUID_PXP' #define MEI_GUID_PXP GUID_INIT(0xfbf6fcf1, 0x96cf, 0x4e2e, 0xA6, \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/uuid.h:23:62: note: expanded from macro 'GUID_INIT' #define GUID_INIT(a, b, c, d0, d1, d2, d3, d4, d5, d6, d7) \ ^ >> drivers/misc/mei/pxp/mei_pxp.c:216:1: error: definition of variable with array type needs an explicit size or an initializer MODULE_DEVICE_TABLE(mei, mei_pxp_tbl); ^ include/linux/module.h:243:21: note: expanded from macro 'MODULE_DEVICE_TABLE' extern typeof(name) __mod_##type##__##name##_device_table \ ^ :180:1: note: expanded from here __mod_mei__mei_pxp_tbl_device_table ^ 1 warning and 2 errors generated. vim +866 drivers/misc/mei/hdcp/mei_hdcp.c 64e9bbdd9588ad Ramalingam C 2019-02-21 861 64e9bbdd9588ad Ramalingam C 2019-02-21 862 #define MEI_UUID_HDCP GUID_INIT(0xB638AB7E, 0x94E2, 0x4EA2, 0xA5, \ 64e9bbdd9588ad Ramalingam C 2019-02-21 863 0x52, 0xD1, 0xC5, 0x4B, 0x62, 0x7F, 0x04) 64e9bbdd9588ad Ramalingam C 2019-02-21 864 50bf73bdce8efc Rikard Falkeborn 2020-06-11 865 static const struct mei_cl_device_id mei_hdcp_tbl[] = { 64e9bbdd9588ad Ramalingam C 2019-02-21 @866 { .uuid = MEI_UUID_HDCP, .version = MEI_CL_VERSION_ANY }, 64e9bbdd9588ad Ramalingam C 2019-02-21 867 { } 64e9bbdd9588ad Ramalingam C 2019-02-21 868 }; 64e9bbdd9588ad Ramalingam C 2019-02-21 @869 MODULE_DEVICE_TABLE(mei, mei_hdcp_tbl); 64e9bbdd9588ad Ramalingam C 2019-02-21 870 -- 0-DAY CI Kernel Test Service https://01.org/lkp