tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4 head: 2f686fa6c0bf7fa168dc45dd7ce1359217212911 commit: 3780469dd372e934445de2fbb5e8cf6e712b9b99 [842/1765] spi: Add Zynq QSPI controller driver config: i386-randconfig-s001-20210722 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/Xilinx/linux-xlnx/commit/3780469dd372e934445de2fbb5e8c... git remote add xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xlnx xlnx_rebase_v5.4 git checkout 3780469dd372e934445de2fbb5e8cf6e712b9b99 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' 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; sparse warnings: (new ones prefixed by >>) vim +/update_stripe +18 drivers/spi/spi-mem.c 17 19 { 20 if (opcode == SPINOR_OP_BE_4K || 21 opcode == SPINOR_OP_BE_32K || 22 opcode == SPINOR_OP_CHIP_ERASE || 23 opcode == SPINOR_OP_SE || 24 opcode == SPINOR_OP_BE_32K_4B || 25 opcode == SPINOR_OP_SE_4B || 26 opcode == SPINOR_OP_BE_4K_4B || 27 opcode == SPINOR_OP_WRSR || 28 opcode == SPINOR_OP_WREAR || 29 opcode == SPINOR_OP_BRWR || 30 opcode == SPINOR_OP_WRSR2) 31 return false; 32 33 return true; 34 } 35 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org