On Sun, 7 Apr 2019 11:19:28 +0300
Tomer Maimon <tmaimon77@xxxxxxxxx> wrote:
> Checking if regulator is valid before reading
> NPCM ADC regulator voltage to avoid system crash
> in a case the regulator is not valid.
>
> Signed-off-by: Tomer Maimon <tmaimon77@xxxxxxxxx>
Good catch.
Applied to the fixes-togreg branch of iio.git and marked for
stable.
Thanks,
Jonathan
> ---
> drivers/iio/adc/npcm_adc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iio/adc/npcm_adc.c b/drivers/iio/adc/npcm_adc.c
> index 9e25bbec9c70..193b3b81de4d 100644
> --- a/drivers/iio/adc/npcm_adc.c
> +++ b/drivers/iio/adc/npcm_adc.c
> @@ -149,7 +149,7 @@ static int npcm_adc_read_raw(struct iio_dev *indio_dev,
> }
> return IIO_VAL_INT;
> case IIO_CHAN_INFO_SCALE:
> - if (info->vref) {
> + if (!IS_ERR(info->vref)) {
> vref_uv = regulator_get_voltage(info->vref);
> *val = vref_uv / 1000;
> } else {
