[PATCH v2 09/10] iio: adc: mcp3911: make use of the sign bit

[Marcus Folkesson <marcus.folkesson@xxxxxxxxx>]

The device supports negative values as well.

Signed-off-by: Marcus Folkesson <marcus.folkesson@xxxxxxxxx>
---

Notes:
    v2:
        - No changes

 drivers/iio/adc/mcp3911.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
index a0609d7663e1..a019264e73e3 100644
--- a/drivers/iio/adc/mcp3911.c
+++ b/drivers/iio/adc/mcp3911.c
@@ -144,6 +144,8 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev,
 		if (ret)
 			goto out;
 
+		*val = sign_extend32(*val, 23);
+
 		ret = IIO_VAL_INT;
 		break;
 
-- 
2.36.1