Re: [PATCH v4 6/7] platform/x86: lenovo-wmi-capdata: Wire up Fan Test Data

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

Hi Rong,

kernel test robot noticed the following build errors:

[auto build test ERROR on 2ccec5944606ee1389abc7ee41986825c6ceb574]

url:    https://github.com/intel-lab-lkp/linux/commits/Rong-Zhang/platform-x86-lenovo-wmi-helpers-Convert-returned-buffer-into-u32/20251114-032343
base:   2ccec5944606ee1389abc7ee41986825c6ceb574
patch link:    https://lore.kernel.org/r/20251113191152.96076-7-i%40rong.moe
patch subject: [PATCH v4 6/7] platform/x86: lenovo-wmi-capdata: Wire up Fan Test Data
config: x86_64-buildonly-randconfig-001-20251114 (https://download.01.org/0day-ci/archive/20251114/202511141750.9JubdfJr-lkp@intel.com/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/20251114/202511141750.9JubdfJr-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/202511141750.9JubdfJr-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/platform/x86/lenovo/wmi-capdata.c:124:27: warning: cast to smaller integer type 'enum lwmi_cd_type' from 'void *' [-Wvoid-pointer-to-enum-cast]
     124 |         enum lwmi_cd_type type = (enum lwmi_cd_type)data;
         |                                  ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/platform/x86/lenovo/wmi-capdata.c:711:40: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     711 |                 ret = lwmi_cd00_get_data(priv->list, LWMI_ATTR_ID_FAN_TEST, &capdata00);
         |                                                      ^
   drivers/platform/x86/lenovo/wmi-capdata.c:56:3: note: expanded from macro 'LWMI_ATTR_ID_FAN_TEST'
      56 |         (FIELD_PREP(LWMI_ATTR_DEV_ID_MASK, LWMI_DEVICE_ID_FAN) |                \
         |          ^
   1 warning and 1 error generated.


vim +/FIELD_PREP +711 drivers/platform/x86/lenovo/wmi-capdata.c

   685	
   686	static int lwmi_cd_probe(struct wmi_device *wdev, const void *context)
   687	{
   688		const struct lwmi_cd_info *info = context;
   689		struct lwmi_cd_priv *priv;
   690		int ret;
   691	
   692		if (!info)
   693			return -EINVAL;
   694	
   695		priv = devm_kzalloc(&wdev->dev, sizeof(*priv), GFP_KERNEL);
   696		if (!priv)
   697			return -ENOMEM;
   698	
   699		priv->wdev = wdev;
   700		dev_set_drvdata(&wdev->dev, priv);
   701	
   702		ret = lwmi_cd_setup(priv, info->type);
   703		if (ret)
   704			goto out;
   705	
   706		switch (info->type) {
   707		case LENOVO_CAPABILITY_DATA_00: {
   708			enum lwmi_cd_type sub_component_type = LENOVO_FAN_TEST_DATA;
   709			struct capdata00 capdata00;
   710	
 > 711			ret = lwmi_cd00_get_data(priv->list, LWMI_ATTR_ID_FAN_TEST, &capdata00);
   712			if (ret || !(capdata00.supported & LWMI_SUPP_VALID)) {
   713				dev_dbg(&wdev->dev, "capdata00 declares no fan test support\n");
   714				sub_component_type = CD_TYPE_NONE;
   715			}
   716	
   717			/* Sub-master (capdata00) <-> sub-component (capdata_fan) */
   718			ret = lwmi_cd_sub_master_add(priv, sub_component_type);
   719			if (ret)
   720				goto out;
   721	
   722			/* Master (lenovo-wmi-other) <-> sub-master (capdata00) */
   723			ret = component_add(&wdev->dev, &lwmi_cd_component_ops);
   724			goto out;
   725		}
   726		case LENOVO_CAPABILITY_DATA_01:
   727			priv->acpi_nb.notifier_call = lwmi_cd01_notifier_call;
   728	
   729			ret = register_acpi_notifier(&priv->acpi_nb);
   730			if (ret)
   731				goto out;
   732	
   733			ret = devm_add_action_or_reset(&wdev->dev, lwmi_cd01_unregister,
   734						       &priv->acpi_nb);
   735			if (ret)
   736				goto out;
   737	
   738			ret = component_add(&wdev->dev, &lwmi_cd_component_ops);
   739			goto out;
   740		case LENOVO_FAN_TEST_DATA:
   741			ret = component_add(&wdev->dev, &lwmi_cd_sub_component_ops);
   742			goto out;
   743		default:
   744			return -EINVAL;
   745		}
   746	out:
   747		if (ret) {
   748			dev_err(&wdev->dev, "failed to register %s: %d\n",
   749				info->name, ret);
   750		} else {
   751			dev_info(&wdev->dev, "registered %s with %u items\n",
   752				 info->name, priv->list->count);
   753		}
   754		return ret;
   755	}
   756	

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