Hi Dmitry, I love your patch! Yet something to improve: [auto build test ERROR on next-20220714] [also build test ERROR on v5.19-rc6] [cannot apply to drm-misc/drm-misc-next drm-intel/for-linux-next media-tree/master linus/master v5.19-rc6 v5.19-rc5 v5.19-rc4] [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/Dmitry-Osipenko/Move-all-drivers-to-a-common-dma-buf-locking-convention/20220715-085556 base: 37b355fdaf31ee18bda9a93c2a438dc1cbf57ec9 config: x86_64-allmodconfig (https://download.01.org/0day-ci/archive/20220715/202207151112.Yi2gyyRX-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/ed55f535b8492ef30d7e94aae5811c772403ab4f git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Dmitry-Osipenko/Move-all-drivers-to-a-common-dma-buf-locking-convention/20220715-085556 git checkout ed55f535b8492ef30d7e94aae5811c772403ab4f # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> drivers/gpu/drm/i915/i915_gem_ww.c:52:6: error: no previous prototype for 'i915_gem_ww_ctx_fini2' [-Werror=missing-prototypes] 52 | void i915_gem_ww_ctx_fini2(struct i915_gem_ww_ctx *ww) | ^~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/i915_gem_ww_ctx_fini2 +52 drivers/gpu/drm/i915/i915_gem_ww.c 51 > 52 void i915_gem_ww_ctx_fini2(struct i915_gem_ww_ctx *ww) 53 { 54 i915_gem_ww_ctx_unlock_all(ww); 55 WARN_ON(ww->contended); 56 } 57 -- 0-DAY CI Kernel Test Service https://01.org/lkp