Hi Alex, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-exynos/exynos-drm-next] [also build test WARNING on linus/master v6.17-rc1 next-20250815] [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/Alex-Hung/drm-Add-helper-for-conversion-from-signed-magnitude/20250815-120435 base: https://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos.git exynos-drm-next patch link: https://lore.kernel.org/r/20250815035047.3319284-29-alex.hung%40amd.com patch subject: [PATCH V11 28/47] drm/amd/display: Add support for sRGB EOTF in BLND block config: arm64-randconfig-002-20250816 (https://download.01.org/0day-ci/archive/20250816/202508161043.tvykblyz-...@intel.com/config) compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 93d24b6b7b148c47a2fa228a4ef31524fa1d9f3f) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250816/202508161043.tvykblyz-...@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202508161043.tvykblyz-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:1295:35: >> warning: variable 'blend_lut' is uninitialized when used here >> [-Wuninitialized] 1295 | return __set_input_tf(NULL, tf, blend_lut, blend_size); | ^~~~~~~~~ drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c:1276:39: note: initialize the variable 'blend_lut' to silence this warning 1276 | const struct drm_color_lut *blend_lut; | ^ | = NULL 1 warning generated. vim +/blend_lut +1295 drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_color.c 1272 1273 struct dc_transfer_func *tf = &dc_plane_state->blend_tf; 1274 struct drm_colorop *colorop = colorop_state->colorop; 1275 struct drm_device *drm = colorop->dev; 1276 const struct drm_color_lut *blend_lut; 1277 uint32_t blend_size = 0; 1278 1279 if (colorop->type != DRM_COLOROP_1D_CURVE && 1280 colorop_state->curve_1d_type != DRM_COLOROP_1D_CURVE_SRGB_EOTF) 1281 return -EINVAL; 1282 1283 if (colorop_state->bypass) { 1284 tf->type = TF_TYPE_BYPASS; 1285 tf->tf = TRANSFER_FUNCTION_LINEAR; 1286 return 0; 1287 } 1288 1289 drm_dbg(drm, "Blend colorop with ID: %d\n", colorop->base.id); 1290 1291 if (colorop->type == DRM_COLOROP_1D_CURVE) { 1292 tf->type = TF_TYPE_DISTRIBUTED_POINTS; 1293 tf->tf = amdgpu_colorop_tf_to_dc_tf(colorop_state->curve_1d_type); 1294 tf->sdr_ref_white_level = SDR_WHITE_LEVEL_INIT_VALUE; > 1295 return __set_input_tf(NULL, tf, blend_lut, blend_size); 1296 } 1297 1298 return -EINVAL; 1299 } 1300 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
