Hi Eddie, I love your patch! Perhaps something to improve: [auto build test WARNING on hwmon/hwmon-next] [also build test WARNING on linux/master linus/master v5.14-rc1 next-20210716] [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] url: https://github.com/0day-ci/linux/commits/Eddie-James/OCC-fsi-and-hwmon-Se... base: https://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging.git hwmon-next config: arm-randconfig-r033-20210718 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 5d5b08761f944d5b9822d582378333cc4b36a0a7) 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 arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/0day-ci/linux/commit/5e8ecc23325ef0310d83a4520071aae18... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Eddie-James/OCC-fsi-and-hwmon-Set-sequence-number-in-submit-interface/20210718-103535 git checkout 5e8ecc23325ef0310d83a4520071aae18418f88a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 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 >>): memcpy(&data0, data, min(len, 4UL)); ^~~~~~~~~~~~~ include/linux/minmax.h:45:19: note: expanded from macro 'min' #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp' __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~~~~~~~ include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp' (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~~~~~~~ include/linux/minmax.h:20:28: note: expanded from macro '__typecheck' (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ drivers/hwmon/occ/p8_i2c.c:107:28: warning: comparison of distinct pointer types ('typeof (len) *' (aka 'unsigned int *') and 'typeof (4UL) *' (aka 'unsigned long *')) [-Wcompare-distinct-pointer-types] memcpy(&data1, data + 4, min(len, 4UL)); ^~~~~~~~~~~~~ include/linux/minmax.h:45:19: note: expanded from macro 'min' #define min(x, y) __careful_cmp(x, y, <) ^~~~~~~~~~~~~~~~~~~~~~ include/linux/minmax.h:36:24: note: expanded from macro '__careful_cmp' __builtin_choose_expr(__safe_cmp(x, y), \ ^~~~~~~~~~~~~~~~ include/linux/minmax.h:26:4: note: expanded from macro '__safe_cmp' (__typecheck(x, y) && __no_side_effects(x, y)) ^~~~~~~~~~~~~~~~~ include/linux/minmax.h:20:28: note: expanded from macro '__typecheck' (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1))) ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~ 2 warnings generated. vim +104 drivers/hwmon/occ/p8_i2c.c 98 99 static int p8_i2c_occ_putscom_be(struct i2c_client *client, u32 address, 100 u8 *data, size_t len) 101 { 102 __be32 data0 = 0, data1 = 0; 103 105 if (len > 4UL) { 106 len -= 4; 107 memcpy(&data1, data + 4, min(len, 4UL)); 108 } 109 110 return p8_i2c_occ_putscom_u32(client, address, be32_to_cpu(data0), 111 be32_to_cpu(data1)); 112 } 113 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org