drivers/cxl/core/region.c:753:36: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int')
From: kernel test robot
Date: Fri Dec 12 2025 - 17:30:35 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 187d0801404f415f22c0b31531982c7ea97fa341
commit: d6602e25819dea2c239972e98e09ba5db4aebd22 cxl/region: Add support to indicate region has extended linear cache
date: 6 weeks ago
config: i386-randconfig-r123-20251212 (https://download.01.org/0day-ci/archive/20251213/202512130601.qHhuGV9q-lkp@xxxxxxxxx/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/20251213/202512130601.qHhuGV9q-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/202512130601.qHhuGV9q-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
>> drivers/cxl/core/region.c:753:36: warning: format specifies type 'unsigned long long' but the argument has type 'resource_size_t' (aka 'unsigned int') [-Wformat]
753 | return sysfs_emit(buf, "%#llx\n", p->cache_size);
| ~~~~~ ^~~~~~~~~~~~~
| %#x
1 warning generated.
vim +753 drivers/cxl/core/region.c
741
742 static ssize_t extended_linear_cache_size_show(struct device *dev,
743 struct device_attribute *attr,
744 char *buf)
745 {
746 struct cxl_region *cxlr = to_cxl_region(dev);
747 struct cxl_region_params *p = &cxlr->params;
748 ssize_t rc;
749
750 ACQUIRE(rwsem_read_intr, rwsem)(&cxl_rwsem.region);
751 if ((rc = ACQUIRE_ERR(rwsem_read_intr, &rwsem)))
752 return rc;
> 753 return sysfs_emit(buf, "%#llx\n", p->cache_size);
754 }
755 static DEVICE_ATTR_RO(extended_linear_cache_size);
756
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