tree: https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git preview head: e675fabdbbcdb6e32dba688a20fb0bd42e0e2d5d commit: 0deb1229ea40390e8402361338d680619a750270 [20/53] cxl/acpi: Map component registers for Root Ports config: mips-randconfig-c004-20220120 (https://download.01.org/0day-ci/archive/20220122/202201222305.il9hV9Zh-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 7b3d30728816403d1fd73cc5082e9fb761262bce) 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 # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git/commit/?id=0d... git remote add cxl https://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl.git git fetch --no-tags cxl preview git checkout 0deb1229ea40390e8402361338d680619a750270 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash drivers/cxl/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): (reg_lo & CXL_DVSEC_REG_LOCATOR_BLOCK_OFF_LOW_MASK); ^ map->barno = FIELD_GET(CXL_DVSEC_REG_LOCATOR_BIR_MASK, reg_lo); ^ >> drivers/cxl/core/regs.c:257:13: error: assigning to 'u8' (aka 'unsigned char') from incompatible type 'void' map->barno = FIELD_GET(CXL_DVSEC_REG_LOCATOR_BIR_MASK, reg_lo); ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ map->reg_type = FIELD_GET(CXL_DVSEC_REG_LOCATOR_BLOCK_ID_MASK, reg_lo); ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. vim +/CXL_DVSEC_REG_LOCATOR_BLOCK_OFF_LOW_MASK +256 drivers/cxl/core/regs.c 251 252 static void cxl_decode_regblock(u32 reg_lo, u32 reg_hi, 253 struct cxl_register_map *map) 254 { 255 map->block_offset = ((u64)reg_hi << 32) | 259 } 260 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org