iio: hid-sensor-prox: Fix incorrect OFFSET calculation

[ Upstream commit 79dabbd ]

The OFFSET calculation in the prox_read_raw() was incorrectly using the
unit exponent, which is intended for SCALE calculations.

Remove the incorrect OFFSET calculation and set it to a fixed value of 0.

Cc: [email protected]
Fixes: 39a3a01 ("iio: hid-sensors: Added Proximity Sensor Driver")
Signed-off-by: Zhang Lixu <[email protected]>
Acked-by: Srinivas Pandruvada <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jonathan Cameron <[email protected]>
[ adapted prox_attr array access to single structure member access ]
Signed-off-by: Sasha Levin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

Author: lixuzha

drivers/iio/light/hid-sensor-prox.c

@@ -102,8 +102,7 @@ static int prox_read_raw(struct iio_dev *indio_dev,
 		ret_type = prox_state->scale_precision;
 		break;
 	case IIO_CHAN_INFO_OFFSET:
-		*val = hid_sensor_convert_exponent(
-				prox_state->prox_attr.unit_expo);
+		*val = 0;
 		ret_type = IIO_VAL_INT;
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ: