Hi Animesh, kernel test robot noticed the following build warnings: https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Animesh-Manna/drm-i915-lobf-Add-lobf-enablement-in-post-plane-update/20250224-221647 base: v6.14-rc4 patch link: https://lore.kernel.org/r/20250224080847.326350-8-animesh.manna%40intel.com patch subject: [PATCH v4 7/8] drm/i915/lobf: Add mutex for alpm update config: i386-randconfig-141-20250225 (https://download.01.org/0day-ci/archive/20250226/202502261244.aUuaLdTn-lkp@xxxxxxxxx/config) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) 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 <lkp@xxxxxxxxx> | Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> | Closes: https://lore.kernel.org/r/202502261244.aUuaLdTn-lkp@xxxxxxxxx/ smatch warnings: drivers/gpu/drm/i915/display/intel_alpm.c:548 intel_alpm_disable() warn: inconsistent returns '&intel_dp->alpm_parameters.lock'. vim +548 drivers/gpu/drm/i915/display/intel_alpm.c 026d6557dc2749d Animesh Manna 2025-02-24 527 void intel_alpm_disable(struct intel_dp *intel_dp) 026d6557dc2749d Animesh Manna 2025-02-24 528 { 026d6557dc2749d Animesh Manna 2025-02-24 529 struct intel_display *display = to_intel_display(intel_dp); 026d6557dc2749d Animesh Manna 2025-02-24 530 enum transcoder cpu_transcoder = intel_dp->alpm_parameters.transcoder; 026d6557dc2749d Animesh Manna 2025-02-24 531 026d6557dc2749d Animesh Manna 2025-02-24 532 if (DISPLAY_VER(display) < 20) 026d6557dc2749d Animesh Manna 2025-02-24 533 return; 026d6557dc2749d Animesh Manna 2025-02-24 534 737b2873a48f3ab Animesh Manna 2025-02-24 535 mutex_lock(&intel_dp->alpm_parameters.lock); 737b2873a48f3ab Animesh Manna 2025-02-24 536 026d6557dc2749d Animesh Manna 2025-02-24 537 if (!(intel_de_read(display, ALPM_CTL(display, cpu_transcoder)) & ALPM_CTL_ALPM_ENABLE)) 026d6557dc2749d Animesh Manna 2025-02-24 538 return; mutex_unlock(&intel_dp->alpm_parameters.lock) before the return 026d6557dc2749d Animesh Manna 2025-02-24 539 026d6557dc2749d Animesh Manna 2025-02-24 540 intel_de_rmw(display, ALPM_CTL(display, cpu_transcoder), 026d6557dc2749d Animesh Manna 2025-02-24 541 ALPM_CTL_ALPM_ENABLE | ALPM_CTL_LOBF_ENABLE | 026d6557dc2749d Animesh Manna 2025-02-24 542 ALPM_CTL_ALPM_AUX_LESS_ENABLE, 0); 026d6557dc2749d Animesh Manna 2025-02-24 543 026d6557dc2749d Animesh Manna 2025-02-24 544 intel_de_rmw(display, 026d6557dc2749d Animesh Manna 2025-02-24 545 PORT_ALPM_CTL(cpu_transcoder), 026d6557dc2749d Animesh Manna 2025-02-24 546 PORT_ALPM_CTL_ALPM_AUX_LESS_ENABLE, 0); 737b2873a48f3ab Animesh Manna 2025-02-24 547 737b2873a48f3ab Animesh Manna 2025-02-24 @548 mutex_unlock(&intel_dp->alpm_parameters.lock); 026d6557dc2749d Animesh Manna 2025-02-24 549 } -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
