Re: [PATCH v2 2/2] iio: adc: ad7606: finish pwm_get_state_hw() TODO

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

Hi David,

kernel test robot noticed the following build errors:

[auto build test ERROR on 6fb2fa9805c501d9ade047fc511961f3273cdcb5]

url:    https://github.com/intel-lab-lkp/linux/commits/David-Lechner/pwm-core-export-pwm_get_state_hw/20241030-052134
base:   6fb2fa9805c501d9ade047fc511961f3273cdcb5
patch link:    https://lore.kernel.org/r/20241029-pwm-export-pwm_get_state_hw-v2-2-03ba063a3230%40baylibre.com
patch subject: [PATCH v2 2/2] iio: adc: ad7606: finish pwm_get_state_hw() TODO
config: i386-randconfig-141-20241101 (https://download.01.org/0day-ci/archive/20241102/202411020101.5Hs6MkwQ-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241102/202411020101.5Hs6MkwQ-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/202411020101.5Hs6MkwQ-lkp@intel.com/

All errors (new ones prefixed by >>):

   drivers/iio/adc/ad7606.c: In function 'ad7606_read_raw':
>> drivers/iio/adc/ad7606.c:765:23: error: implicit declaration of function 'pwm_get_state_hw'; did you mean 'pwm_get_state'? [-Werror=implicit-function-declaration]
     765 |                 ret = pwm_get_state_hw(st->cnvst_pwm, &cnvst_pwm_state);
         |                       ^~~~~~~~~~~~~~~~
         |                       pwm_get_state
   cc1: some warnings being treated as errors


vim +765 drivers/iio/adc/ad7606.c

   733	
   734	static int ad7606_read_raw(struct iio_dev *indio_dev,
   735				   struct iio_chan_spec const *chan,
   736				   int *val,
   737				   int *val2,
   738				   long m)
   739	{
   740		int ret, ch = 0;
   741		struct ad7606_state *st = iio_priv(indio_dev);
   742		struct ad7606_chan_scale *cs;
   743		struct pwm_state cnvst_pwm_state;
   744	
   745		switch (m) {
   746		case IIO_CHAN_INFO_RAW:
   747			iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {
   748				ret = ad7606_scan_direct(indio_dev, chan->address, val);
   749				if (ret < 0)
   750					return ret;
   751				return IIO_VAL_INT;
   752			}
   753			unreachable();
   754		case IIO_CHAN_INFO_SCALE:
   755			if (st->sw_mode_en)
   756				ch = chan->address;
   757			cs = &st->chan_scales[ch];
   758			*val = cs->scale_avail[cs->range][0];
   759			*val2 = cs->scale_avail[cs->range][1];
   760			return IIO_VAL_INT_PLUS_MICRO;
   761		case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
   762			*val = st->oversampling;
   763			return IIO_VAL_INT;
   764		case IIO_CHAN_INFO_SAMP_FREQ:
 > 765			ret = pwm_get_state_hw(st->cnvst_pwm, &cnvst_pwm_state);
   766			if (ret < 0)
   767				return ret;
   768			*val = DIV_ROUND_CLOSEST_ULL(NSEC_PER_SEC, cnvst_pwm_state.period);
   769			return IIO_VAL_INT;
   770		}
   771		return -EINVAL;
   772	}
   773	

-- 
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https://github.com/intel/lkp-tests/wiki