Re: [PATCH v3 2/6] iio: adc: ad4030: add driver for ad4030-24

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

Hi Esteban,

kernel test robot noticed the following build warnings:

[auto build test WARNING on ffd294d346d185b70e28b1a28abe367bbfe53c04]

url:    https://github.com/intel-lab-lkp/linux/commits/Esteban-Blanc/dt-bindings-iio-adc-add-ADI-ad4030-ad4630-and-ad4632/20250130-191153
base:   ffd294d346d185b70e28b1a28abe367bbfe53c04
patch link:    https://lore.kernel.org/r/20250130-eblanc-ad4630_v1-v3-2-052e8c2d897d%40baylibre.com
patch subject: [PATCH v3 2/6] iio: adc: ad4030: add driver for ad4030-24
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20250131/202501311345.Oh77Bhyw-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501311345.Oh77Bhyw-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/202501311345.Oh77Bhyw-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/iio/adc/ad4030.c: In function 'ad4030_buffer_preenable':
>> drivers/iio/adc/ad4030.c:715:30: warning: unused variable 'st' [-Wunused-variable]
     715 |         struct ad4030_state *st = iio_priv(indio_dev);
         |                              ^~


vim +/st +715 drivers/iio/adc/ad4030.c

   712	
   713	static int ad4030_buffer_preenable(struct iio_dev *indio_dev)
   714	{
 > 715		struct ad4030_state *st = iio_priv(indio_dev);
   716		int ret;
   717	
   718		ret = ad4030_set_mode(indio_dev, *indio_dev->active_scan_mask);
   719		if (ret)
   720			return ret;
   721	
   722		return 0;
   723	}
   724	

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