Re: [PATCH v10 21/26] cxl: allow region creation by type2 drivers

[kernel test robot <lkp@intel.com>]

Hi,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 6cd498f39cf5e1475b567eb67a6fcf1ca3d67d46]

url:    https://github.com/intel-lab-lkp/linux/commits/alucerop-amd-com/cxl-make-memdev-creation-type-agnostic/20250205-233651
base:   6cd498f39cf5e1475b567eb67a6fcf1ca3d67d46
patch link:    https://lore.kernel.org/r/20250205151950.25268-22-alucerop%40amd.com
patch subject: [PATCH v10 21/26] cxl: allow region creation by type2 drivers
config: i386-buildonly-randconfig-006-20250206 (https://download.01.org/0day-ci/archive/20250207/202502070349.mdD2BTuL-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250207/202502070349.mdD2BTuL-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502070349.mdD2BTuL-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/cxl/core/region.c:3589: warning: Function parameter or struct member 'ways' not described in 'cxl_create_region'


vim +3589 drivers/cxl/core/region.c

  3578	
  3579	/**
  3580	 * cxl_create_region - Establish a region given an endpoint decoder
  3581	 * @cxlrd: root decoder to allocate HPA
  3582	 * @cxled: endpoint decoder with reserved DPA capacity
  3583	 *
  3584	 * Returns a fully formed region in the commit state and attached to the
  3585	 * cxl_region driver.
  3586	 */
  3587	struct cxl_region *cxl_create_region(struct cxl_root_decoder *cxlrd,
  3588					     struct cxl_endpoint_decoder *cxled, int ways)
> 3589	{
  3590		struct cxl_region *cxlr;
  3591	
  3592		mutex_lock(&cxlrd->range_lock);
  3593		cxlr = __construct_new_region(cxlrd, cxled, ways);
  3594		mutex_unlock(&cxlrd->range_lock);
  3595	
  3596		if (IS_ERR(cxlr))
  3597			return cxlr;
  3598	
  3599		if (device_attach(&cxlr->dev) <= 0) {
  3600			dev_err(&cxlr->dev, "failed to create region\n");
  3601			drop_region(cxlr);
  3602			return ERR_PTR(-ENODEV);
  3603		}
  3604		return cxlr;
  3605	}
  3606	EXPORT_SYMBOL_NS_GPL(cxl_create_region, "CXL");
  3607	

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