Hi Niklas, kernel test robot noticed the following build warnings: [auto build test WARNING on pci/next] [also build test WARNING on next-20250108] [cannot apply to pci/for-linus linus/master v6.13-rc6] [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/Niklas-Cassel/PCI-endpoint-Add-BAR-type-BAR_RESIZABLE/20250108-021844 base: https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next patch link: https://lore.kernel.org/r/20250107181450.3182430-11-cassel%40kernel.org patch subject: [PATCH 3/6] PCI: dwc: endpoint: Add support for BAR type BAR_RESIZABLE config: arm-randconfig-003-20250109 (https://download.01.org/0day-ci/archive/20250109/202501090927.zMSzHORM-lkp@xxxxxxxxx/config) compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 096551537b2a747a3387726ca618ceeb3950e9bc) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250109/202501090927.zMSzHORM-lkp@xxxxxxxxx/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 <lkp@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202501090927.zMSzHORM-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): In file included from drivers/pci/controller/dwc/pcie-designware-ep.c:14: In file included from drivers/pci/controller/dwc/pcie-designware.h:17: In file included from include/linux/dma-mapping.h:8: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:2223: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> drivers/pci/controller/dwc/pcie-designware-ep.c:259:27: warning: result of comparison of constant 140737488355328 with expression of type 'size_t' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] 259 | if (size < SZ_1M || size > (SZ_128G * 1024)) | ~~~~ ^ ~~~~~~~~~~~~~~~~ 2 warnings generated. vim +259 drivers/pci/controller/dwc/pcie-designware-ep.c 249 250 static u32 dw_pcie_ep_bar_size_to_rebar_cap(size_t size) 251 { 252 u32 val; 253 254 /* 255 * According to PCIe base spec, min size for a resizable BAR is 1 MB, 256 * thus disallow a requested BAR size smaller than 1 MB. 257 * Disallow a requested BAR size larger than 128 TB. 258 */ > 259 if (size < SZ_1M || size > (SZ_128G * 1024)) 260 return 0; 261 262 val = ilog2(size); 263 val -= 20; 264 265 /* Sizes in REBAR_CAP start at BIT(4). */ 266 return BIT(val + 4); 267 } 268 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
