[PATCH] iio: frequency: admv1013: fix wrong channel field used in admv1013_read_raw()

[Salah Triki <salah.triki@gmail.com>]

admv1013_read_raw() switches on chan->channel instead of
chan->channel2 when handling IIO_CHAN_INFO_CALIBBIAS. The channel
field only ever holds 0 or 1 (see ADMV1013_CHAN_CALIB()), while the
IIO_MOD_I / IIO_MOD_Q modifiers are stored in channel2. As a result,
the switch always falls through to the default case and calibbias
reads always fail with -EINVAL, even though the corresponding
admv1013_write_raw() path correctly uses channel2 and works as
expected.

Fix the read path to switch on chan->channel2, matching the write
path and the actual channel_spec definition.

Fixes: da35a7b526d9 ("iio: frequency: admv1013: add support for ADMV1013")
Signed-off-by: Salah Triki <salah.triki@gmail.com>
---
 drivers/iio/frequency/admv1013.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c
index b823adfb0f70..bb06a94ccc50 100644
--- a/drivers/iio/frequency/admv1013.c
+++ b/drivers/iio/frequency/admv1013.c
@@ -195,7 +195,7 @@ static int admv1013_read_raw(struct iio_dev *indio_dev,
 
 	switch (info) {
 	case IIO_CHAN_INFO_CALIBBIAS:
-		switch (chan->channel) {
+		switch (chan->channel2) {
 		case IIO_MOD_I:
 			addr = ADMV1013_REG_OFFSET_ADJUST_I;
 			break;
-- 
2.43.0