Hi Jason, kernel test robot noticed the following build warnings:
[auto build test WARNING on 8e929cb546ee42c9a61d24fae60605e9e3192354] url: https://github.com/intel-lab-lkp/linux/commits/Jason-Gunthorpe/iommu-io-pgtable-arm-Remove-split-on-unmap-behavior/20241106-021511 base: 8e929cb546ee42c9a61d24fae60605e9e3192354 patch link: https://lore.kernel.org/r/2-v3-b3a5b5937f56%2B7bb-arm_no_split_jgg%40nvidia.com patch subject: [PATCH v3 2/3] iommu/io-pgtable-arm-v7s: Remove split on unmap behavior config: arm-randconfig-004-20241106 (https://download.01.org/0day-ci/archive/20241106/202411061634.3etgzij8-...@intel.com/config) compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241106/202411061634.3etgzij8-...@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/202411061634.3etgzij8-...@intel.com/ All warnings (new ones prefixed by >>): >> drivers/iommu/io-pgtable-arm-v7s.c:823:18: warning: variable 'loopnr' set >> but not used [-Wunused-but-set-variable] 823 | unsigned int i, loopnr = 0; | ^ 1 warning generated. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for GET_FREE_REGION Depends on [n]: SPARSEMEM [=n] Selected by [y]: - RESOURCE_KUNIT_TEST [=y] && RUNTIME_TESTING_MENU [=y] && KUNIT [=y] vim +/loopnr +823 drivers/iommu/io-pgtable-arm-v7s.c e5fc9753b1a831 Robin Murphy 2016-01-26 810 e5fc9753b1a831 Robin Murphy 2016-01-26 811 static int __init arm_v7s_do_selftests(void) e5fc9753b1a831 Robin Murphy 2016-01-26 812 { e5fc9753b1a831 Robin Murphy 2016-01-26 813 struct io_pgtable_ops *ops; e5fc9753b1a831 Robin Murphy 2016-01-26 814 struct io_pgtable_cfg cfg = { e5fc9753b1a831 Robin Murphy 2016-01-26 815 .tlb = &dummy_tlb_ops, e5fc9753b1a831 Robin Murphy 2016-01-26 816 .oas = 32, e5fc9753b1a831 Robin Murphy 2016-01-26 817 .ias = 32, 4f41845b340783 Will Deacon 2019-06-25 818 .coherent_walk = true, 4f41845b340783 Will Deacon 2019-06-25 819 .quirks = IO_PGTABLE_QUIRK_ARM_NS, e5fc9753b1a831 Robin Murphy 2016-01-26 820 .pgsize_bitmap = SZ_4K | SZ_64K | SZ_1M | SZ_16M, e5fc9753b1a831 Robin Murphy 2016-01-26 821 }; 76b8c2705cdd26 Jason Gunthorpe 2024-11-05 822 unsigned int iova, size; e5fc9753b1a831 Robin Murphy 2016-01-26 @823 unsigned int i, loopnr = 0; -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
