[PATCH 4.4 021/188] iio: ltr501: ltr501_read_ps(): add missing endianness conversion

[Greg Kroah-Hartman]

From: Oliver Lang <Oliver.Lang@xxxxxxxxxxxxxxxxxxx>

commit 71b33f6f93ef9462c84560e2236ed22209d26a58 upstream.

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@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Tested-by: Nikita Travkin <nikita@xxxxxxx> # ltr559
Link: https://lore.kernel.org/r/20210610134619.2101372-4-mkl@xxxxxxxxxxxxxx
Cc: <Stable@xxxxxxxxxxxxxxx>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/iio/light/ltr501.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -411,18 +411,19 @@ static int ltr501_read_als(struct ltr501
 
 static int ltr501_read_ps(struct ltr501_data *data)
 {
-	int ret, status;
+	__le16 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);
+			       &status, sizeof(status));
 	if (ret < 0)
 		return ret;
 
-	return status;
+	return le16_to_cpu(status);
 }
 
 static int ltr501_read_intr_prst(struct ltr501_data *data,