Hi Hannes, I love your patch! Perhaps something to improve: [auto build test WARNING on linus/master] [also build test WARNING on v5.14 next-20210910] [cannot apply to cryptodev/master crypto/master linux-nvme/for-next] [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/Hannes-Reinecke/nvme-In-band-aut... base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git bf9f243f23e6623f310ba03fbb14e10ec3a61290 config: powerpc-randconfig-s032-20210911 (attached as .config) compiler: powerpc64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://github.com/0day-ci/linux/commit/c117a1b0b131e4dfcd82ae5934b265924... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Hannes-Reinecke/nvme-In-band-authentication-support/20210910-144627 git checkout c117a1b0b131e4dfcd82ae5934b2659248acb372 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/nvme/target/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/nvme/target/fabrics-cmd-auth.c:359:20: sparse: expected restricted __le16 [usertype] t_id drivers/nvme/target/fabrics-cmd-auth.c:359:20: sparse: got restricted __le32 [usertype] vim +20 drivers/nvme/target/fabrics-cmd-auth.c 14 15 void nvmet_init_auth(struct nvmet_ctrl *ctrl, struct nvmet_req *req) 16 { 17 /* Initialize in-band authentication */ 18 req->sq->authenticated = false; 19 req->sq->dhchap_step = NVME_AUTH_DHCHAP_MESSAGE_NEGOTIATE; 21 } 22 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org