tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 134546626849cd6852d6d4bf8f207b5fbc54261b commit: 57b8b2d03dbd17e5d3c03489d7cd7985ea8286a0 [7020/7467] mtd: implement proper partition handling reproduce: # apt-get install sparse # sparse version: v0.6.1-174-g094d5a94-dirty git checkout 57b8b2d03dbd17e5d3c03489d7cd7985ea8286a0 make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/mtd/mtdpart.c:318:5: sparse: sparse: symbol '__del_mtd_partitions' 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