Hi Baolin, I love your patch! Perhaps something to improve: [auto build test WARNING on block/for-next] [also build test WARNING on v5.9-rc1 next-20200817] [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/Baolin-Wang/Some-clean-ups-for-b... base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: arc-randconfig-c004-20200817 (attached as .config) compiler: arc-elf-gcc (GCC) 9.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; coccinelle warnings: (new ones prefixed by >>) Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org