[shenki:spb1-hacking 6952/9113] drivers/hwmon/pmbus/mp2975.c:878:7: error: use of undeclared identifier 'CONFIG_SENSORS_MP2975_REGULATOR'

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

tree:   https://github.com/shenki/linux spb1-hacking
head:   b3de99e1aeeeae3e96ffc4c34afae3d2ef4c8175
commit: 8301c92a0180503b1eabf8921845160d118c326a [6952/9113] hwmon: (pmbus/mp2975) Add regulator support
config: i386-buildonly-randconfig-001-20230829 (https://download.01.org/0day-ci/archive/20230829/202308291013.jj5KBVQh-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230829/202308291013.jj5KBVQh-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/202308291013.jj5KBVQh-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hwmon/pmbus/mp2975.c:878:7: error: use of undeclared identifier 'CONFIG_SENSORS_MP2975_REGULATOR'
                   if (CONFIG_SENSORS_MP2975_REGULATOR)
                       ^
   1 error generated.


vim +/CONFIG_SENSORS_MP2975_REGULATOR +878 drivers/hwmon/pmbus/mp2975.c

   841	
   842	static int mp2975_probe(struct i2c_client *client)
   843	{
   844		struct pmbus_driver_info *info;
   845		struct mp2975_data *data;
   846		int ret;
   847	
   848		data = devm_kzalloc(&client->dev, sizeof(struct mp2975_data),
   849				    GFP_KERNEL);
   850		if (!data)
   851			return -ENOMEM;
   852	
   853		if (client->dev.of_node)
   854			data->chip_id = (enum chips)of_device_get_match_data(&client->dev);
   855		else
   856			data->chip_id = i2c_match_id(mp2975_id, client)->driver_data;
   857	
   858		memcpy(data->max_phases, mp2975_max_phases[data->chip_id],
   859		       sizeof(data->max_phases));
   860	
   861		if (data->chip_id == mp2975)
   862			memcpy(&data->info, &mp2975_info, sizeof(*info));
   863		else
   864			memcpy(&data->info, &mp2973_info, sizeof(*info));
   865	
   866		info = &data->info;
   867	
   868		/* Identify multiphase configuration for rail 2. */
   869		ret = mp2975_identify_multiphase_rail2(client, data);
   870		if (ret < 0)
   871			return ret;
   872	
   873		if (ret) {
   874			/* Two rails are connected. */
   875			data->info.pages = MP2975_PAGE_NUM;
   876			data->info.phases[1] = ret;
   877			data->info.func[1] = MP2975_RAIL2_FUNC;
 > 878			if (CONFIG_SENSORS_MP2975_REGULATOR)
   879				data->info.num_regulators = MP2975_PAGE_NUM;
   880		}
   881	
   882		if (data->chip_id == mp2975) {
   883			/* Identify multiphase configuration. */
   884			ret = mp2975_identify_multiphase(client, data, info);
   885			if (ret)
   886				return ret;
   887	
   888			/* Identify VID setting per rail. */
   889			ret = mp2975_identify_rails_vid(client, data, info);
   890			if (ret < 0)
   891				return ret;
   892	
   893			/* Obtain current sense gain of power stage. */
   894			ret = mp2975_current_sense_gain_get(client, data);
   895			if (ret)
   896				return ret;
   897	
   898			/* Obtain voltage reference values. */
   899			ret = mp2975_vref_get(client, data, info);
   900			if (ret)
   901				return ret;
   902	
   903			/* Obtain vout over-voltage scales. */
   904			ret = mp2975_vout_ov_scale_get(client, data, info);
   905			if (ret < 0)
   906				return ret;
   907		} else {
   908			/* Identify VID setting per rail. */
   909			ret = mp2973_identify_rails_vid(client, data, info);
   910			if (ret < 0)
   911				return ret;
   912		}
   913	
   914		/* Obtain offsets, maximum and format for vout. */
   915		ret = mp2975_vout_per_rail_config_get(client, data, info);
   916		if (ret)
   917			return ret;
   918	
   919		return pmbus_do_probe(client, info);
   920	}
   921	

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