iio: adc: max1027: Fix wrong shift with 12-bit devices

commit 732ae19ee8f58ecaf30cbc1bbbda5cbee6a45043 upstream.

10-bit devices must shift the value twice.
This is not needed anymore on 12-bit devices.

Fixes: ae47d009b508 ("iio: adc: max1027: Introduce 12-bit devices support")
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20210818111139.330636-2-miquel.raynal@bootlin.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index ca1dff3924ff9c8d93802297f299c280a38d922c..110a133cc8d47438abfb41cd559ce4c9f9089d48 100644 (file)
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -103,7 +103,7 @@ MODULE_DEVICE_TABLE(of, max1027_adc_dt_ids);
                        .sign = 'u',                                    \
                        .realbits = depth,                              \
                        .storagebits = 16,                              \
-                       .shift = 2,                                     \
+                       .shift = (depth == 10) ? 2 : 0,                 \
                        .endianness = IIO_BE,                           \
                },                                                      \
        }