iio: adc: stm32: fix vrefint wrong calibration value handling

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If the vrefint calibration is zero, the vrefint channel output value
cannot be computed. Currently, in such case, the raw conversion value
is returned, which is not relevant.
Do not expose the vrefint channel when the output value cannot be
computed, instead.

Fixes: 0e346b2cfa ("iio: adc: stm32-adc: add vrefint calibration support")
Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20220609095856.376961-1-olivier.moysan@foss.st.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

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Olivier Moysan 2022-06-09 11:58:56 +02:00 • committed by Jonathan Cameron

parent 106b391e1b

commit bc05f30fc2

1 changed files with 17 additions and 10 deletions

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drivers/iio/adc/stm32-adc.c

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