On Tue, 06 Aug 2024 12:45:06 +0200
Nuno Sá <noname.nuno@xxxxxxxxx> wrote:
> On Tue, 2024-08-06 at 11:51 +0300, Dumitru Ceclan wrote:
> > The cfg pointer is set before reading the channel number that the
> > configuration should point to. This causes configurations to be shifted
> > by one channel.
> > For example setting bipolar to the first channel defined in the DT will
> > cause bipolar mode to be active on the second defined channel.
> >
> > Fix by moving the cfg pointer setting after reading the channel number.
> >
> > Fixes: 7b8d045e497a ("iio: adc: ad7124: allow more than 8 channels")
> > Signed-off-by: Dumitru Ceclan <dumitru.ceclan@xxxxxxxxxx>
> > ---
>
> Reviewed-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
Applied to the fixes-togreg branch of iio.git and marked for stable.
Thanks,
Jonathan
>
> > drivers/iio/adc/ad7124.c | 3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
> > index 3beed78496c5..672d41bac8ca 100644
> > --- a/drivers/iio/adc/ad7124.c
> > +++ b/drivers/iio/adc/ad7124.c
> > @@ -839,8 +839,6 @@ static int ad7124_parse_channel_config(struct iio_dev
> > *indio_dev,
> > st->channels = channels;
> >
> > device_for_each_child_node_scoped(dev, child) {
> > - cfg = &st->channels[channel].cfg;
> > -
> > ret = fwnode_property_read_u32(child, "reg", &channel);
> > if (ret)
> > return ret;
> > @@ -858,6 +856,7 @@ static int ad7124_parse_channel_config(struct iio_dev
> > *indio_dev,
> > st->channels[channel].ain = AD7124_CHANNEL_AINP(ain[0]) |
> > AD7124_CHANNEL_AINM(ain[1]);
> >
> > + cfg = &st->channels[channel].cfg;
> > cfg->bipolar = fwnode_property_read_bool(child, "bipolar");
> >
> > ret = fwnode_property_read_u32(child, "adi,reference-select",
> > &tmp);
>
>
