tree: https://github.com/Freescale/linux-fslc 5.12.x+fslc head: 533c005dbffa6950950622c514132d7b11c039bf commit: 78c9cede1e8309fbce3522c4ec751d71e6cbd1d4 [4/6] drivers, misc: add U-Boot bootcount driver config: powerpc64-randconfig-s031-20210515 (attached as .config) compiler: powerpc-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/Freescale/linux-fslc/commit/78c9cede1e8309fbce3522c4ec... git remote add freescale-fslc https://github.com/Freescale/linux-fslc git fetch --no-tags freescale-fslc 5.12.x+fslc git checkout 78c9cede1e8309fbce3522c4ec751d71e6cbd1d4 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; iwyu warnings: (new ones prefixed by >>) vim +65 drivers/misc/uboot_bootcount.c 48 49 static int store_str_bootcount(struct device *dev, 50 struct device_attribute *attr, 51 const char *buf, 52 size_t count) 53 { 54 int r; 55 u32 value; 56 57 r = kstrtou32(buf, 0, &value); 58 if (r < 0) 59 return -EINVAL; 60 61 if (single_register) 62 value = (UBOOT_BOOTCOUNT_MAGIC & UBOOT_BOOTCOUNT_MAGIC_MASK) | 63 (value & UBOOT_BOOTCOUNT_COUNT_MASK); 64 66 67 return count; 68 } 69 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org