Hi Sean, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on next-20201113] [also build test WARNING on v5.10-rc3] [cannot apply to drm-intel/for-linux-next char-misc/char-misc-testing v5.10-rc3 v5.10-rc2 v5.10-rc1] [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/Sean-Z-Huang/drm-i915-pxp-Introd... base: 92edc4aef86780a8ad01b092c6d6630bb3cb423d config: i386-randconfig-s001-20201114 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-107-gaf3512a6-dirty # https://github.com/0day-ci/linux/commit/b2c5c38f134701a462cb7e880c4cebcd7... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Sean-Z-Huang/drm-i915-pxp-Introduce-Intel-PXP-component/20201114-094926 git checkout b2c5c38f134701a462cb7e880c4cebcd79e1d8c6 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=i386 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/gpu/drm/i915/pxp/intel_pxp_sm.c:175:5: sparse: sparse: symbol 'pxp_sm_reg_read' 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@lists.01.org