Hi Suraj, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on linus/master v6.16-rc7 next-20250725] [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/Suraj-Kandpal/drm-i915-vbt-Add-eDP-Data-Overrride-field-in-VBT/20250725-141824 base: git://anongit.freedesktop.org/drm-intel for-linux-next patch link: https://lore.kernel.org/r/20250725061548.2704697-3-suraj.kandpal%40intel.com patch subject: [PATCH 2/3] drm/i915/bios: Add function to check if edp data override is needed config: i386-buildonly-randconfig-006-20250725 (https://download.01.org/0day-ci/archive/20250726/202507261913.locl2yum-...@intel.com/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/20250726/202507261913.locl2yum-...@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/202507261913.locl2yum-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/gpu/drm/i915/display/intel_bios.c:2524:2: warning: variable 'val' is >> used uninitialized whenever switch default is taken >> [-Wsometimes-uninitialized] 2524 | default: | ^~~~~~~ drivers/gpu/drm/i915/display/intel_bios.c:2528:34: note: uninitialized use occurs here 2528 | return edp_data_override_mask & val; | ^~~ drivers/gpu/drm/i915/display/intel_bios.c:2485:9: note: initialize the variable 'val' to silence this warning 2485 | u32 val; | ^ | = 0 1 warning generated. vim +/val +2524 drivers/gpu/drm/i915/display/intel_bios.c 2482 2483 static bool parse_bdb_263_edp_data_override(const u32 edp_data_override_mask, int rate) 2484 { 2485 u32 val; 2486 2487 switch (rate) { 2488 case 2000000: 2489 val = BDB_263_VBT_EDP_LINK_RATE_20; 2490 break; 2491 case 1350000: 2492 val = BDB_263_VBT_EDP_LINK_RATE_13_5; 2493 break; 2494 case 1000000: 2495 val = BDB_263_VBT_EDP_LINK_RATE_10; 2496 break; 2497 case 810000: 2498 val = BDB_263_VBT_EDP_LINK_RATE_8_1; 2499 break; 2500 case 675000: 2501 val = BDB_263_VBT_EDP_LINK_RATE_6_75; 2502 break; 2503 case 540000: 2504 val = BDB_263_VBT_EDP_LINK_RATE_5_4; 2505 break; 2506 case 432000: 2507 val = BDB_263_VBT_EDP_LINK_RATE_4_32; 2508 break; 2509 case 324000: 2510 val = BDB_263_VBT_EDP_LINK_RATE_3_24; 2511 break; 2512 case 270000: 2513 val = BDB_263_VBT_EDP_LINK_RATE_2_7; 2514 break; 2515 case 243000: 2516 val = BDB_263_VBT_EDP_LINK_RATE_2_43; 2517 break; 2518 case 216000: 2519 val = BDB_263_VBT_EDP_LINK_RATE_2_16; 2520 break; 2521 case 162000: 2522 val = BDB_263_VBT_EDP_LINK_RATE_1_62; 2523 break; > 2524 default: 2525 break; 2526 } 2527 2528 return edp_data_override_mask & val; 2529 } 2530 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
