Re: [PATCH linux dev 6.11] hwmon:add new hwmon driver sq52205

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

Hi Wenliang,

kernel test robot noticed the following build errors:

[auto build test ERROR on linux/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Wenliang/hwmon-add-new-hwmon-driver-sq52205/20240826-103932
base:   linux/master
patch link:    https://lore.kernel.org/r/20240822074426.7241-1-wenliang202407%40163.com
patch subject: [PATCH linux dev 6.11] hwmon:add new hwmon driver sq52205
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20240826/202408261627.lm2xKacD-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240826/202408261627.lm2xKacD-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/202408261627.lm2xKacD-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/hwmon/sq52205.c:493:37: error: cannot assign to variable 'sq522xx_regmap_config' with const-qualified type 'const struct regmap_config'
     493 |         sq522xx_regmap_config.max_register = data->config->registers;
         |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
   drivers/hwmon/sq52205.c:67:35: note: variable 'sq522xx_regmap_config' declared const here
      67 | static const struct regmap_config sq522xx_regmap_config = {
         | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
      68 |         .reg_bits = 8,
         |         ~~~~~~~~~~~~~~
      69 |         .val_bits = 16,
         |         ~~~~~~~~~~~~~~~
      70 | };
         | ~
   1 error generated.


vim +493 drivers/hwmon/sq52205.c

   460	
   461	static int sq522xx_probe(struct i2c_client *client)
   462	{
   463		struct device *dev = &client->dev;
   464		struct sq522xx_data *data;
   465		struct device *hwmon_dev;
   466		u32 val;
   467		int ret, group = 0;
   468		enum sq522xx_ids chip;
   469	
   470		if (client->dev.of_node)
   471			chip = (uintptr_t)of_device_get_match_data(&client->dev);
   472		else
   473			chip = i2c_match_id(sq522xx_id, client)->driver_data;
   474	
   475		data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
   476		if (!data)
   477			return -ENOMEM;
   478	
   479		/* set the device type */
   480		data->client = client;
   481		data->config = &sq522xx_config[chip];
   482		mutex_init(&data->config_lock);
   483	
   484		if (of_property_read_u32(dev->of_node, "shunt-resistor", &val) < 0)
   485			val = SQ522XX_RSHUNT_DEFAULT;
   486	
   487	
   488		if (val <= 0 || val > data->config->calibration_factor)
   489			return -ENODEV;
   490	
   491		data->rshunt = val;
   492	
 > 493		sq522xx_regmap_config.max_register = data->config->registers;
   494	
   495		data->regmap = devm_regmap_init_i2c(client, &sq522xx_regmap_config);
   496		if (IS_ERR(data->regmap)) {
   497			dev_err(dev, "failed to allocate register map\n");
   498			return PTR_ERR(data->regmap);
   499		}
   500	
   501	
   502		ret = sq522xx_init(data);
   503		if (ret < 0) {
   504			dev_err(dev, "error configuring the device: %d\n", ret);
   505			return -ENODEV;
   506		}
   507		if (chip == sq52205) {
   508			ret = sq52205_init(data);
   509			if (ret < 0) {
   510				dev_err(dev, "error configuring the device cal: %d\n", ret);
   511				return -ENODEV;
   512			}
   513		}
   514	
   515		data->groups[group++] = &sq522xx_group;
   516		if (chip == sq52205)
   517			data->groups[group++] = &sq52205_group;
   518	
   519		hwmon_dev = devm_hwmon_device_register_with_groups(dev, client->name,
   520									data, data->groups);
   521		if (IS_ERR(hwmon_dev))
   522			return PTR_ERR(hwmon_dev);
   523	
   524		dev_info(dev, "power monitor %s (Rshunt = %li uOhm)\n",
   525			 client->name, data->rshunt);
   526	
   527		return 0;
   528	}
   529	

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