linux-kernel - Re: [PATCH V2 19/20] cxl/pmem_region: Prep patch to accommodate pmem

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Message-ID: <202507310942.77glfQS3-lkp@intel.com>
Date: Thu, 31 Jul 2025 09:57:05 +0800
From: kernel test robot <lkp@...el.com>
To: Neeraj Kumar <s.neeraj@...sung.com>, linux-cxl@...r.kernel.org,
	nvdimm@...ts.linux.dev, linux-kernel@...r.kernel.org,
	gost.dev@...sung.com
Cc: oe-kbuild-all@...ts.linux.dev, a.manzanares@...sung.com,
	vishak.g@...sung.com, neeraj.kernel@...il.com,
	Neeraj Kumar <s.neeraj@...sung.com>
Subject: Re: [PATCH V2 19/20] cxl/pmem_region: Prep patch to accommodate
 pmem_region attributes

Hi Neeraj,

kernel test robot noticed the following build errors:

[auto build test ERROR 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/20250730121209.303202-20-s.neeraj%40samsung.com
patch subject: [PATCH V2 19/20] cxl/pmem_region: Prep patch to accommodate pmem_region attributes
config: i386-buildonly-randconfig-001-20250731 (https://download.01.org/0day-ci/archive/20250731/202507310942.77glfQS3-lkp@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/20250731/202507310942.77glfQS3-lkp@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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507310942.77glfQS3-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/cxl/cxlmem.h:12,
                    from drivers/cxl/pci.c:15:
>> drivers/cxl/cxl.h:921:20: error: redefinition of 'create_pmem_region'
     921 | static inline void create_pmem_region(struct nvdimm *nvdimm)
         |                    ^~~~~~~~~~~~~~~~~~
   drivers/cxl/cxl.h:898:20: note: previous definition of 'create_pmem_region' with type 'void(struct nvdimm *)'
     898 | static inline void create_pmem_region(struct nvdimm *nvdimm)
         |                    ^~~~~~~~~~~~~~~~~~


vim +/create_pmem_region +921 drivers/cxl/cxl.h

   902	
   903	#ifdef CONFIG_CXL_PMEM_REGION
   904	bool is_cxl_pmem_region(struct device *dev);
   905	struct cxl_pmem_region *to_cxl_pmem_region(struct device *dev);
   906	int devm_cxl_add_pmem_region(struct cxl_region *cxlr);
   907	void create_pmem_region(struct nvdimm *nvdimm);
   908	#else
   909	static inline bool is_cxl_pmem_region(struct device *dev)
   910	{
   911		return false;
   912	}
   913	static inline struct cxl_pmem_region *to_cxl_pmem_region(struct device *dev)
   914	{
   915		return NULL;
   916	}
   917	static inline int devm_cxl_add_pmem_region(struct cxl_region *cxlr)
   918	{
   919		return 0;
   920	}
 > 921	static inline void create_pmem_region(struct nvdimm *nvdimm)
   922	{
   923	}
   924	#endif
   925	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki