Hi "Pali, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on ulf.hansson-mmc/next linux/master v5.7-rc7] [cannot apply to next-20200526] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Pali-Roh-r/mmc-core-Do-not-export-MMC_NAME-and-MODALIAS-mmc-block-for-SDIO-cards/20200526-235837 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 9cb1fd0efd195590b828b9b865421ad345a4a145 config: i386-randconfig-s001-20200527 (attached as .config) compiler: gcc-9 (Debian 9.3.0-13) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-240-gf0fe1cd9-dirty # save the attached .config to linux build tree make W=1 C=1 ARCH=i386 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot sparse warnings: (new ones prefixed by >>) >> drivers/mmc/core/sdio.c:44:20: sparse: sparse: symbol 'sdio_type' 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(a)lists.01.org