Hi Jouni, kernel test robot noticed the following build warnings:
[auto build test WARNING on next-20251124] [cannot apply to drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip v6.18-rc7 v6.18-rc6 v6.18-rc5 linus/master v6.18-rc7] [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/Jouni-H-gander/drm-i915-psr-Add-helper-for-checking-if-vblank-evasion-is-needed-by-PSR/20251125-143352 base: next-20251124 patch link: https://lore.kernel.org/r/20251125063253.328023-2-jouni.hogander%40intel.com patch subject: [PATCH 1/4] drm/i915/psr: Add helper for checking if vblank evasion is needed by PSR config: x86_64-randconfig-003-20251126 (https://download.01.org/0day-ci/archive/20251126/[email protected]/config) compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251126/[email protected]/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 <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/i915/display/intel_psr.c:4550:2: warning: variable >> 'intel_dp' is used uninitialized whenever 'for' loop exits because its >> condition is false [-Wsometimes-uninitialized] 4550 | for_each_intel_encoder_mask_with_psr(display->drm, encoder, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 4551 | crtc_state->uapi.encoder_mask) { | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/display/intel_display.h:271:2: note: expanded from macro 'for_each_intel_encoder_mask_with_psr' 271 | list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/list.h:783:7: note: expanded from macro 'list_for_each_entry' 783 | !list_entry_is_head(pos, head, member); \ | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/i915/display/intel_psr.c:4556:9: note: uninitialized use occurs here 4556 | return intel_dp->psr.psr2_sel_fetch_enabled; | ^~~~~~~~ drivers/gpu/drm/i915/display/intel_psr.c:4550:2: note: remove the condition if it is always true 4550 | for_each_intel_encoder_mask_with_psr(display->drm, encoder, | ^ drivers/gpu/drm/i915/display/intel_display.h:271:2: note: expanded from macro 'for_each_intel_encoder_mask_with_psr' 271 | list_for_each_entry((intel_encoder), &(dev)->mode_config.encoder_list, base.head) \ | ^ include/linux/list.h:783:7: note: expanded from macro 'list_for_each_entry' 783 | !list_entry_is_head(pos, head, member); \ | ^ drivers/gpu/drm/i915/display/intel_psr.c:4548:27: note: initialize the variable 'intel_dp' to silence this warning 4548 | struct intel_dp *intel_dp; | ^ | = NULL 1 warning generated. vim +4550 drivers/gpu/drm/i915/display/intel_psr.c 4543 4544 bool intel_psr_needs_evasion(const struct intel_crtc_state *crtc_state) 4545 { 4546 struct intel_display *display = to_intel_display(crtc_state); 4547 struct intel_encoder *encoder; 4548 struct intel_dp *intel_dp; 4549 > 4550 for_each_intel_encoder_mask_with_psr(display->drm, encoder, -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
