Re: [PATCH v4 3/6] iio: adc: ad4030: add averaging support

[kernel test robot]

Hi Esteban,

kernel test robot noticed the following build warnings:

[auto build test WARNING on a64dcfb451e254085a7daee5fe51bf22959d52d3]

url:    https://github.com/intel-lab-lkp/linux/commits/Esteban-Blanc/dt-bindings-iio-adc-add-ADI-ad4030-ad4630-and-ad4632/20250214-202727
base:   a64dcfb451e254085a7daee5fe51bf22959d52d3
patch link:    https://lore.kernel.org/r/20250214-eblanc-ad4630_v1-v4-3-135dd66cab6a%40baylibre.com
patch subject: [PATCH v4 3/6] iio: adc: ad4030: add averaging support
config: parisc-randconfig-r112-20250216 (https://download.01.org/0day-ci/archive/20250216/202502160603.zYl25ISM-lkp@xxxxxxxxx/config)
compiler: hppa-linux-gcc (GCC) 14.2.0
reproduce: (https://download.01.org/0day-ci/archive/20250216/202502160603.zYl25ISM-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502160603.zYl25ISM-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
>> drivers/iio/adc/ad4030.c:375:27: sparse: sparse: incorrect type in assignment (different modifiers) @@     expected struct iio_scan_type *scan_type @@     got struct iio_scan_type const * @@
   drivers/iio/adc/ad4030.c:375:27: sparse:     expected struct iio_scan_type *scan_type
   drivers/iio/adc/ad4030.c:375:27: sparse:     got struct iio_scan_type const *
   drivers/iio/adc/ad4030.c: note: in included file (through include/linux/mutex.h, include/linux/notifier.h, include/linux/clk.h):
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true
   include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true

vim +375 drivers/iio/adc/ad4030.c

   365	
   366	static int ad4030_get_chan_scale(struct iio_dev *indio_dev,
   367					 struct iio_chan_spec const *chan,
   368					 int *val,
   369					 int *val2)
   370	{
   371		struct ad4030_state *st = iio_priv(indio_dev);
   372		struct iio_scan_type *scan_type;
   373	
   374		if (chan->differential) {
 > 375			scan_type = iio_get_current_scan_type(indio_dev,
   376							      st->chip->channels);
   377			*val = (st->vref_uv * 2) / MILLI;
   378			*val2 = scan_type->realbits;
   379			return IIO_VAL_FRACTIONAL_LOG2;
   380		}
   381	
   382		*val = st->vref_uv / MILLI;
   383		*val2 = chan->scan_type.realbits;
   384		return IIO_VAL_FRACTIONAL_LOG2;
   385	}
   386	

-- 
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