Hi Ayaz, Thank you for the patch! Yet something to improve: [auto build test ERROR on drm-intel/for-linux-next] [also build test ERROR on drm-tip/drm-tip next-20210830] [cannot apply to v5.14] [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/Ayaz-A-Siddiqui/drm-i915-gt-Initialize-unused-MOCS-entries-to-L3_WB/20210831-002827 base: git://anongit.freedesktop.org/drm-intel for-linux-next config: i386-randconfig-a016-20210830 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/449e390824ff0b89a08669d97f456bec3c0f8f74 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Ayaz-A-Siddiqui/drm-i915-gt-Initialize-unused-MOCS-entries-to-L3_WB/20210831-002827 git checkout 449e390824ff0b89a08669d97f456bec3c0f8f74 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/gt/intel_mocs.c:496:5: error: no previous prototype for 'get_ctx_reg_count' [-Werror=missing-prototypes] 496 | int get_ctx_reg_count(const struct drm_i915_aux_table *aux) | ^~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/gt/intel_mocs.c:364:1: error: 'add_aux_reg' defined but not used [-Werror=unused-function] 364 | add_aux_reg(struct drm_i915_aux_table *aux, | ^~~~~~~~~~~ cc1: all warnings being treated as errors vim +/get_ctx_reg_count +496 drivers/gpu/drm/i915/gt/intel_mocs.c 495 > 496 int get_ctx_reg_count(const struct drm_i915_aux_table *aux) 497 { 498 int count = 0; 499 500 while (aux) { 501 if (aux->type == REG_ENGINE_CONTEXT) 502 count++; 503 aux = aux->next; 504 } 505 return count; 506 } 507 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org