tree: https://github.com/Xilinx/linux-xlnx master head: 6a698dbaaf0e6caa053476c2f661b36885a0ce30 commit: 9b62852ec04b7d48971ce8016b13c27403929908 [248/326] Merge tag 'v5.15' into master config: i386-randconfig-a013 (https://download.01.org/0day-ci/archive/20220114/202201142208.iEdIk0Sc-lk...) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 82c8aca93488730ce8f66101e0f3538f14b551dd) 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/Xilinx/linux-xlnx/commit/9b62852ec04b7d48971ce8016b13c... git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xilinx-xlnx master git checkout 9b62852ec04b7d48971ce8016b13c27403929908 # 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=i386 SHELL=/bin/bash drivers/spi/ 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 >>): In file included from drivers/spi/spi-zynqmp-gqspi.c:26: In file included from include/linux/mtd/spi-nor.h:10: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. ^ In file included from drivers/spi/spi-zynqmp-gqspi.c:13: include/linux/firmware/xlnx-zynqmp.h:1182:12: warning: unused function 'zynqmp_pm_sec_read_reg' [-Wunused-function] static int zynqmp_pm_sec_read_reg(u32 node_id, u32 offset, u32 *ret_value) ^ include/linux/firmware/xlnx-zynqmp.h:1187:12: warning: unused function 'zynqmp_pm_sec_mask_write_reg' [-Wunused-function] static int zynqmp_pm_sec_mask_write_reg(const u32 node_id, const u32 offset, ^ 3 warnings generated. vim +62 include/linux/mtd/cfi.h ^1da177e4c3f41 Linus Torvalds 2005-04-16 60 241651d04d672f David Woodhouse 2007-09-06 61 #ifndef cfi_interleave 241651d04d672f David Woodhouse 2007-09-06 @62 #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. 241651d04d672f David Woodhouse 2007-09-06 63 static inline int cfi_interleave(void *cfi) 241651d04d672f David Woodhouse 2007-09-06 64 { 241651d04d672f David Woodhouse 2007-09-06 65 BUG(); 241651d04d672f David Woodhouse 2007-09-06 66 return 0; 241651d04d672f David Woodhouse 2007-09-06 67 } 241651d04d672f David Woodhouse 2007-09-06 68 #endif 241651d04d672f David Woodhouse 2007-09-06 69 :::::: The code at line 62 was first introduced by commit :::::: 241651d04d672fb685b2874707016cbbf95931e5 [MTD] Fix CFI build error when no map width or interleave supported :::::: TO: David Woodhouse <dwmw2(a)infradead.org&gt; :::::: CC: David Woodhouse <dwmw2(a)infradead.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org