Hi Andrea, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.17-rc7 next-20220309] [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/Andrea-Tomassetti/bcache-Use-bcache-without-formatting-existing-device/20220310-165353 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 3bf7edc84a9eb4007dd9a0cb8878a7e1d5ec6a3b config: i386-randconfig-s002 (https://download.01.org/0day-ci/archive/20220310/202203102007.cDiegien-lkp@xxxxxxxxx/config) compiler: gcc-9 (Ubuntu 9.4.0-1ubuntu1~20.04) 9.4.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/b5073e4ece2a86f002ca66fb1d864034c12be3e2 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Andrea-Tomassetti/bcache-Use-bcache-without-formatting-existing-device/20220310-165353 git checkout b5073e4ece2a86f002ca66fb1d864034c12be3e2 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/md/bcache/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/md/bcache/control.c:18:6: sparse: sparse: symbol 'bch_service_ioctl_ctrl' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
