Hi Guixin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mkp-scsi/for-next] [also build test WARNING on v5.17-rc4 next-20220215] [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/Guixin-Liu/scsi-target-tcmu-Make... base: https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next config: x86_64-randconfig-a005-20220214 (https://download.01.org/0day-ci/archive/20220215/202202152239.8LJNreof-lk...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 37f422f4ac31c8b8041c6b62065263314282dab6) 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/0day-ci/linux/commit/7f77700542b8196c546ef10656dda7a10... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Guixin-Liu/scsi-target-tcmu-Make-cmd_ring_size-changeable-via-configfs/20220215-160505 git checkout 7f77700542b8196c546ef10656dda7a107d8d1ad # 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=x86_64 SHELL=/bin/bash drivers/target/ 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 >>): (udev->cmdr_size + CMDR_OFF) >> 20); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/target/target_core_user.c:2744:4: warning: format specifies type 'unsigned int' but the argument has type 'unsigned long' [-Wformat] (udev->cmdr_size + CMDR_OFF) >> 20); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 2 warnings generated. vim +2628 drivers/target/target_core_user.c 2616 2617 static ssize_t tcmu_show_configfs_dev_params(struct se_device *dev, char *b) 2618 { 2619 struct tcmu_dev *udev = TCMU_DEV(dev); 2620 ssize_t bl = 0; 2621 2622 bl = sprintf(b + bl, "Config: %s ", 2623 udev->dev_config[0] ? udev->dev_config : "NULL"); 2624 bl += sprintf(b + bl, "Size: %llu ", udev->dev_size); 2625 bl += sprintf(b + bl, "MaxDataAreaMB: %u ", udev->data_area_mb); 2626 bl += sprintf(b + bl, "DataPagesPerBlk: %u", udev->data_pages_per_blk); 2627 bl += sprintf(b + bl, "CmdRingSizeMB: %u\n", 2629 2630 return bl; 2631 } 2632 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org