Re: [PATCH v3 2/2] iio: light: add support for veml3235

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

Hi Javier,

kernel test robot noticed the following build warnings:

[auto build test WARNING on ceab669fdf7b7510b4e4997b33d6f66e433a96db]

url:    https://github.com/intel-lab-lkp/linux/commits/Javier-Carrasco/dt-bindings-iio-light-veml6030-add-veml3235/20241024-030144
base:   ceab669fdf7b7510b4e4997b33d6f66e433a96db
patch link:    https://lore.kernel.org/r/20241023-veml3235-v3-2-8490f2622f9a%40gmail.com
patch subject: [PATCH v3 2/2] iio: light: add support for veml3235
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20241025/202410251610.kB7u6xMJ-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241025/202410251610.kB7u6xMJ-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/202410251610.kB7u6xMJ-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/iio/light/veml3235.c: In function 'veml3235_set_it':
>> drivers/iio/light/veml3235.c:148:26: warning: variable 'it_idx' set but not used [-Wunused-but-set-variable]
     148 |         int ret, new_it, it_idx;
         |                          ^~~~~~
   drivers/iio/light/veml3235.c: In function 'veml3235_set_gain':
>> drivers/iio/light/veml3235.c:191:28: warning: variable 'gain_idx' set but not used [-Wunused-but-set-variable]
     191 |         int ret, new_gain, gain_idx;
         |                            ^~~~~~~~


vim +/it_idx +148 drivers/iio/light/veml3235.c

   144	
   145	static int veml3235_set_it(struct iio_dev *indio_dev, int val, int val2)
   146	{
   147		struct veml3235_data *data = iio_priv(indio_dev);
 > 148		int ret, new_it, it_idx;
   149	
   150		if (val)
   151			return -EINVAL;
   152	
   153		switch (val2) {
   154		case 50000:
   155			new_it = 0x00;
   156			it_idx = 4;
   157			break;
   158		case 100000:
   159			new_it = 0x01;
   160			it_idx = 3;
   161			break;
   162		case 200000:
   163			new_it = 0x02;
   164			it_idx = 2;
   165			break;
   166		case 400000:
   167			new_it = 0x03;
   168			it_idx = 1;
   169			break;
   170		case 800000:
   171			new_it = 0x04;
   172			it_idx = 0;
   173			break;
   174		default:
   175			return -EINVAL;
   176		}
   177	
   178		ret = regmap_field_write(data->rf.it, new_it);
   179		if (ret) {
   180			dev_err(data->dev,
   181				"failed to update integration time: %d\n", ret);
   182			return ret;
   183		}
   184	
   185		return 0;
   186	}
   187	
   188	static int veml3235_set_gain(struct iio_dev *indio_dev, int val, int val2)
   189	{
   190		struct veml3235_data *data = iio_priv(indio_dev);
 > 191		int ret, new_gain, gain_idx;
   192	
   193		if (val2 != 0)
   194			return -EINVAL;
   195	
   196		switch (val) {
   197		case 1:
   198			new_gain = 0x00;
   199			gain_idx = 3;
   200			break;
   201		case 2:
   202			new_gain = 0x01;
   203			gain_idx = 2;
   204			break;
   205		case 4:
   206			new_gain = 0x03;
   207			gain_idx = 1;
   208			break;
   209		case 8:
   210			new_gain = 0x07;
   211			gain_idx = 0;
   212			break;
   213		default:
   214			return -EINVAL;
   215		}
   216	
   217		ret = regmap_field_write(data->rf.gain, new_gain);
   218		if (ret) {
   219			dev_err(data->dev, "failed to set gain: %d\n", ret);
   220			return ret;
   221		}
   222	
   223		return 0;
   224	}
   225	

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