Re: [PATCH V2] scsi: target: tcmu: Make cmd_ring_size changeable via configfs.

[kernel test robot]

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-20220211]
[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-cmd_ring_size-changeable-via-configfs/20220214-111810
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20220214/202202141721.OdtEVrDJ-lkp@xxxxxxxxx/config)
compiler: xtensa-linux-gcc (GCC) 11.2.0
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/c972a1533164208e331a5a4d34a7ed0bb44b17ba
        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/20220214-111810
        git checkout c972a1533164208e331a5a4d34a7ed0bb44b17ba
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=xtensa SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

   drivers/target/target_core_user.c: In function 'tcmu_show_configfs_dev_params':
>> drivers/target/target_core_user.c:2627:49: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'u32' {aka 'unsigned int'} [-Wformat=]
    2627 |         bl += sprintf(b + bl, "CmdRingSizeMB: %lu\n",
         |                                               ~~^
         |                                                 |
         |                                                 long unsigned int
         |                                               %u
    2628 |                       (udev->cmdr_size + CMDR_OFF) >> 20);
         |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                                                    |
         |                                                    u32 {aka unsigned int}
   drivers/target/target_core_user.c: In function 'tcmu_cmd_ring_size_mb_show':
   drivers/target/target_core_user.c:2743:45: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'u32' {aka 'unsigned int'} [-Wformat=]
    2743 |         return snprintf(page, PAGE_SIZE, "%lu\n",
         |                                           ~~^
         |                                             |
         |                                             long unsigned int
         |                                           %u
    2744 |                         (udev->cmdr_size + CMDR_OFF) >> 20);
         |                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         |                                                      |
         |                                                      u32 {aka unsigned int}


vim +2627 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: %lu\n",
  2628			      (udev->cmdr_size + CMDR_OFF) >> 20);
  2629	
  2630		return bl;
  2631	}
  2632	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx