Hi Christian, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on drm/drm-next drm-exynos/exynos-drm-next drm-intel/for-linux-next drm-intel/for-linux-next-fixes drm-tip/drm-tip linus/master v6.4-rc7 next-20230621] [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/Christian-K-nig/drm-add-drm_exec-selftests-v4/20230621-213827 base: git://anongit.freedesktop.org/drm/drm-misc drm-misc-next patch link: https://lore.kernel.org/r/20230621133700.7588-2-christian.koenig%40amd.com patch subject: [PATCH 2/2] drm: add drm_exec selftests v4 config: x86_64-buildonly-randconfig-r003-20230621 (https://download.01.org/0day-ci/archive/20230622/202306220029.l9dtnhh6-...@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce: (https://download.01.org/0day-ci/archive/20230622/202306220029.l9dtnhh6-...@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/202306220029.l9dtnhh6-...@intel.com/ All warnings (new ones prefixed by >>): In file included from drivers/gpu/drm/tests/drm_exec_test.c:13: drivers/gpu/drm/tests/drm_exec_test.c: In function 'test_prepare_array': >> include/drm/drm_exec.h:78:20: warning: variable '__drm_exec_retry_ptr' set >> but not used [-Wunused-but-set-variable] 78 | for (void *__drm_exec_retry_ptr; ({ \ | ^~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/tests/drm_exec_test.c:134:9: note: in expansion of macro 'drm_exec_until_all_locked' 134 | drm_exec_until_all_locked(&exec) | ^~~~~~~~~~~~~~~~~~~~~~~~~ vim +/__drm_exec_retry_ptr +78 include/drm/drm_exec.h 5d87375e05b5f7 Christian König 2023-06-21 52 5d87375e05b5f7 Christian König 2023-06-21 53 /** 5d87375e05b5f7 Christian König 2023-06-21 54 * drm_exec_for_each_locked_object - iterate over all the locked objects 5d87375e05b5f7 Christian König 2023-06-21 55 * @exec: drm_exec object 5d87375e05b5f7 Christian König 2023-06-21 56 * @index: unsigned long index for the iteration 5d87375e05b5f7 Christian König 2023-06-21 57 * @obj: the current GEM object 5d87375e05b5f7 Christian König 2023-06-21 58 * 5d87375e05b5f7 Christian König 2023-06-21 59 * Iterate over all the locked GEM objects inside the drm_exec object. 5d87375e05b5f7 Christian König 2023-06-21 60 */ 5d87375e05b5f7 Christian König 2023-06-21 61 #define drm_exec_for_each_locked_object(exec, index, obj) \ 5d87375e05b5f7 Christian König 2023-06-21 62 for (index = 0, obj = (exec)->objects[0]; \ 5d87375e05b5f7 Christian König 2023-06-21 63 index < (exec)->num_objects; \ 5d87375e05b5f7 Christian König 2023-06-21 64 ++index, obj = (exec)->objects[index]) 5d87375e05b5f7 Christian König 2023-06-21 65 5d87375e05b5f7 Christian König 2023-06-21 66 /** 5d87375e05b5f7 Christian König 2023-06-21 67 * drm_exec_until_all_locked - loop until all GEM objects are locked 5d87375e05b5f7 Christian König 2023-06-21 68 * @exec: drm_exec object 5d87375e05b5f7 Christian König 2023-06-21 69 * 5d87375e05b5f7 Christian König 2023-06-21 70 * Core functionality of the drm_exec object. Loops until all GEM objects are 5d87375e05b5f7 Christian König 2023-06-21 71 * locked and no more contention exists. At the beginning of the loop it is 5d87375e05b5f7 Christian König 2023-06-21 72 * guaranteed that no GEM object is locked. 5d87375e05b5f7 Christian König 2023-06-21 73 * 5d87375e05b5f7 Christian König 2023-06-21 74 * Since labels can't be defined local to the loops body we use a jump pointer 5d87375e05b5f7 Christian König 2023-06-21 75 * to make sure that the retry is only used from within the loops body. 5d87375e05b5f7 Christian König 2023-06-21 76 */ 5d87375e05b5f7 Christian König 2023-06-21 77 #define drm_exec_until_all_locked(exec) \ 5d87375e05b5f7 Christian König 2023-06-21 @78 for (void *__drm_exec_retry_ptr; ({ \ 5d87375e05b5f7 Christian König 2023-06-21 79 __label__ __drm_exec_retry; \ 5d87375e05b5f7 Christian König 2023-06-21 80 __drm_exec_retry: \ 5d87375e05b5f7 Christian König 2023-06-21 81 __drm_exec_retry_ptr = &&__drm_exec_retry; \ 5d87375e05b5f7 Christian König 2023-06-21 82 drm_exec_cleanup(exec); \ 5d87375e05b5f7 Christian König 2023-06-21 83 });) 5d87375e05b5f7 Christian König 2023-06-21 84 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
