From: Dumitru Ceclan <mitrutzceclan@xxxxxxxxx>
commit 61cbfb5368dd50ed0d65ce21d305aa923581db2b upstream.
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>
Link: https://patch.msgid.link/20240806085133.114547-1-dumitru.ceclan@xxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/iio/adc/ad7124.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -842,8 +842,6 @@ static int ad7124_parse_channel_config(s
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;
@@ -861,6 +859,7 @@ static int ad7124_parse_channel_config(s
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);
Patches currently in stable-queue which might be from mitrutzceclan@xxxxxxxxx are
queue-6.10/iio-adc-ad7124-fix-chip-id-mismatch.patch
queue-6.10/iio-adc-ad7124-fix-config-comparison.patch
queue-6.10/iio-adc-ad7124-fix-dt-configuration-parsing.patch
