Hi James, I love your patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on char-misc/char-misc-next char-misc/char-misc-linus zohar-integrity/next-integrity linus/master v6.2-rc5 next-20230124] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/James-Bottomley/tpm-move-buffer-handling-from-static-inlines-to-real-functions/20230125-020146 patch link: https://lore.kernel.org/r/20230124175516.5984-7-James.Bottomley%40HansenPartnership.com patch subject: [PATCH v2 06/11] tpm: Add full HMAC and encrypt/decrypt session handling code config: i386-randconfig-s002-20230123 (https://download.01.org/0day-ci/archive/20230125/202301251326.r0t0nGZc-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://github.com/intel-lab-lkp/linux/commit/dc0fc74718b4a786aba4a954233e8ab3afdcc03c git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review James-Bottomley/tpm-move-buffer-handling-from-static-inlines-to-real-functions/20230125-020146 git checkout dc0fc74718b4a786aba4a954233e8ab3afdcc03c # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 olddefconfig make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/char/tpm/tpm2-sessions.c:1184:5: sparse: sparse: symbol 'tpm2_create_null_primary' was not declared. Should it be static? -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests