[PATCH 3/4] iio: ltr501: ltr501_read_ps(): add missing endianness conversion

[Marc Kleine-Budde <mkl@pengutronix.de>]

From: Oliver Lang <Oliver.Lang@gossenmetrawatt.com>

The PS ADC Channel data is spread over 2 registers in little-endian
form. This patch adds the missing endianness conversion.

Fixes: 2690be905123 ("iio: Add Lite-On ltr501 ambient light / proximity sensor driver")
Signed-off-by: Oliver Lang <Oliver.Lang@gossenmetrawatt.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
---
 drivers/iio/light/ltr501.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 79898b72fe73..0e3f97ef3cdd 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -407,20 +407,16 @@ static int ltr501_read_als(const struct ltr501_data *data, __le16 buf[2])
 				buf, 2 * sizeof(__le16));
 }
 
-static int ltr501_read_ps(const struct ltr501_data *data)
+static int ltr501_read_ps(const struct ltr501_data *data, __le16 *buf)
 {
-	int ret, status;
+	int ret;
 
 	ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY);
 	if (ret < 0)
 		return ret;
 
-	ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA,
-			       &status, 2);
-	if (ret < 0)
-		return ret;
-
-	return status;
+	return regmap_bulk_read(data->regmap, LTR501_PS_DATA,
+				buf, sizeof(__le16));
 }
 
 static int ltr501_read_intr_prst(const struct ltr501_data *data,
@@ -668,11 +664,11 @@ static int ltr501_read_raw(struct iio_dev *indio_dev,
 			break;
 		case IIO_PROXIMITY:
 			mutex_lock(&data->lock_ps);
-			ret = ltr501_read_ps(data);
+			ret = ltr501_read_ps(data, buf);
 			mutex_unlock(&data->lock_ps);
 			if (ret < 0)
 				break;
-			*val = ret & LTR501_PS_DATA_MASK;
+			*val = le16_to_cpu(buf[0]) & LTR501_PS_DATA_MASK;
 			ret = IIO_VAL_INT;
 			break;
 		default:
-- 
2.30.2