Hi Corentin, I love your patch! Perhaps something to improve: [auto build test WARNING on cryptodev/master] [cannot apply to v5.4-rc3 next-20191014] [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/Corentin-Labbe/crypto-add-sun8i-ce-driver-for-Allwinner-crypto-engine/20191014-104401 base: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git master reproduce: # apt-get install sparse # sparse version: v0.6.1-rc1-43-g0ccb3b4-dirty 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/crypto/allwinner/sun8i-ce/sun8i-ce-core.c:415:25: sparse: sparse: symbol 'sun8i_ce_pm_ops' was not declared. Should it be static? Please review and possibly fold the followup patch. --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation