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staging: iio: adt7316: use correct variable in DAC_internal_Vref read 

The dac internal vref settings are part of the ldac config register rather
than the dac config register. Change the variable being used so the read
returns the correct result.

Whilst a fix, it is for a driver in heavy churn so do not backport
to stable without taking considerable care and testing.

Signed-off-by: Jeremy Fertic <jeremyfertic@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Jeremy Fertic 2018-12-11 17:54:59 -07:00 committed by Jonathan Cameron
parent 85a1c11913
commit 5107d16e0a
1 changed files with 2 additions and 2 deletions
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4
drivers/staging/iio/addac/adt7316.c
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@ -1061,10 +1061,10 @@ static ssize_t adt7316_show_DAC_internal_Vref(struct device *dev,
if ((chip->id & ID_FAMILY_MASK) == ID_ADT75XX)
return sprintf(buf, "0x%x\n",
(chip->dac_config & ADT7516_DAC_IN_VREF_MASK) >>
(chip->ldac_config & ADT7516_DAC_IN_VREF_MASK) >>
ADT7516_DAC_IN_VREF_OFFSET);
return sprintf(buf, "%d\n",
!!(chip->dac_config & ADT7316_DAC_IN_VREF));
!!(chip->ldac_config & ADT7316_DAC_IN_VREF));
}
static ssize_t adt7316_store_DAC_internal_Vref(struct device *dev,