Hi Neeraj, kernel test robot noticed the following build warnings:
[auto build test WARNING on f11a5f89910a7ae970fbce4fdc02d86a8ba8570f] url: https://github.com/intel-lab-lkp/linux/commits/Neeraj-Kumar/nvdimm-label-Introduce-NDD_CXL_LABEL-flag-to-set-cxl-label-format/20250730-202209 base: f11a5f89910a7ae970fbce4fdc02d86a8ba8570f patch link: https://lore.kernel.org/r/20250730121209.303202-19-s.neeraj%40samsung.com patch subject: [PATCH V2 18/20] cxl/pmem: Add support of cxl lsa 2.1 support in cxl pmem config: i386-randconfig-011-20250731 (https://download.01.org/0day-ci/archive/20250731/202507310929.lj3dlryh-...@intel.com/config) compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250731/202507310929.lj3dlryh-...@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/202507310929.lj3dlryh-...@intel.com/ All warnings (new ones prefixed by >>): drivers/cxl/core/region.c: In function 'create_pmem_region': >> drivers/cxl/core/region.c:2692:35: warning: variable 'cxl_nvb' set but not >> used [-Wunused-but-set-variable] 2692 | struct cxl_nvdimm_bridge *cxl_nvb; | ^~~~~~~ vim +/cxl_nvb +2692 drivers/cxl/core/region.c 2687 2688 void create_pmem_region(struct nvdimm *nvdimm) 2689 { 2690 struct cxl_nvdimm *cxl_nvd; 2691 struct cxl_memdev *cxlmd; > 2692 struct cxl_nvdimm_bridge *cxl_nvb; 2693 struct cxl_pmem_region_params *params; 2694 struct cxl_root_decoder *cxlrd; 2695 struct cxl_decoder *cxld; 2696 struct cxl_region *cxlr; 2697 2698 if (!nvdimm_has_cxl_region(nvdimm)) 2699 return; 2700 2701 lockdep_assert_held(&cxl_rwsem.region); 2702 cxl_nvd = nvdimm_provider_data(nvdimm); 2703 params = nvdimm_get_cxl_region_param(nvdimm); 2704 cxlmd = cxl_nvd->cxlmd; 2705 cxl_nvb = cxlmd->cxl_nvb; 2706 cxlrd = cxlmd->cxlrd; 2707 2708 /* 2709 * FIXME: Limitation: Region creation support only for 2710 * interleave way == 1 2711 */ 2712 if (!(params->nlabel == 1)) 2713 dev_info(&cxlmd->dev, 2714 "Region Creation is not supported with iw > 1\n"); 2715 else { 2716 cxld = cxl_find_free_ep_decoder(cxlmd->endpoint); 2717 cxlr = cxl_create_region(cxlrd, CXL_PARTMODE_PMEM, 2718 atomic_read(&cxlrd->region_id), 2719 params, cxld); 2720 if (IS_ERR(cxlr)) 2721 dev_info(&cxlmd->dev, "Region Creation failed\n"); 2722 } 2723 } 2724 EXPORT_SYMBOL_NS_GPL(create_pmem_region, "CXL"); 2725 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki