From: Michael Hennerich <michael.hennerich@analog.com>
Date: Wed, 6 Apr 2022 10:56:20 +0000 (+0200)
Subject: iio: dac: ad5446: Fix read_raw not returning set value
X-Git-Tag: v5.4.192~70
X-Git-Url: https://git.fsl.cs.sunysb.edu/?a=commitdiff_plain;h=e82c726c94ec5d042475c0d60c19ebdea29ade4e;p=wrapfs-3.2.y.git

iio: dac: ad5446: Fix read_raw not returning set value

commit 89a01cd688d3c0ac983ef0b0e5f40018ab768317 upstream.

read_raw should return the un-scaled value.

Fixes: 5e06bdfb46e8b ("staging:iio:dac:ad5446: Return cached value for 'raw' attribute")
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20220406105620.1171340-1-michael.hennerich@analog.com
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c
index 1f55cd8abb55..5fbda0431d6a 100644
--- a/drivers/iio/dac/ad5446.c
+++ b/drivers/iio/dac/ad5446.c
@@ -170,7 +170,7 @@ static int ad5446_read_raw(struct iio_dev *indio_dev,
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		*val = st->cached_val;
+		*val = st->cached_val >> chan->scan_type.shift;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		*val = st->vref_mv;