Hi Tejas, kernel test robot noticed the following build warnings: [auto build test WARNING on drm-tip/drm-tip] url: https://github.com/intel-lab-lkp/linux/commits/Tejas-Upadhyay/drm-i915-gt-Add-workaround-14016712196/20230512-132314 base: git://anongit.freedesktop.org/drm/drm-tip drm-tip patch link: https://lore.kernel.org/r/20230512052744.778113-1-tejas.upadhyay%40intel.com patch subject: [PATCH] drm/i915/gt: Add workaround 14016712196 config: x86_64-randconfig-a011 (https://download.01.org/0day-ci/archive/20230512/202305121555.i5dslJkI-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-12) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/429038a73fb0b1cbcfa5b41e17d70e48d835d347 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Tejas-Upadhyay/drm-i915-gt-Add-workaround-14016712196/20230512-132314 git checkout 429038a73fb0b1cbcfa5b41e17d70e48d835d347 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 olddefconfig 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> | Link: https://lore.kernel.org/oe-kbuild-all/202305121555.i5dslJkI-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/i915/gt/gen8_engine_cs.c:180:5: warning: no previous prototype for 'mtl_dummy_pipe_control' [-Wmissing-prototypes] 180 | int mtl_dummy_pipe_control(struct i915_request *rq, u32 *cs) | ^~~~~~~~~~~~~~~~~~~~~~ vim +/mtl_dummy_pipe_control +180 drivers/gpu/drm/i915/gt/gen8_engine_cs.c 179 > 180 int mtl_dummy_pipe_control(struct i915_request *rq, u32 *cs) 181 { 182 struct intel_engine_cs *engine = rq->engine; 183 184 if (IS_MTL_GRAPHICS_STEP(engine->i915, M, STEP_A0, STEP_B0) || 185 IS_MTL_GRAPHICS_STEP(engine->i915, P, STEP_A0, STEP_B0)) { 186 /* dummy PIPE_CONTROL + depth flush */ 187 cs = intel_ring_begin(rq, 6); 188 if (IS_ERR(cs)) 189 return PTR_ERR(cs); 190 cs = gen12_emit_pipe_control(cs, 191 0, 192 PIPE_CONTROL_DEPTH_CACHE_FLUSH, 193 LRC_PPHWSP_SCRATCH_ADDR); 194 intel_ring_advance(rq, cs); 195 } 196 197 return 0; 198 } 199 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests
