[PATCH 4.14 31/43] iio: hid-sensor-humidity: Fix alignment issue of timestamp channel

[Greg Kroah-Hartman]

From: Ye Xiang <xiang.ye@xxxxxxxxx>

commit 37e89e574dc238a4ebe439543c5ab4fbb2f0311b upstream.

This patch ensures that, there is sufficient space and correct
alignment for the timestamp.

Fixes: d7ed89d5aadf ("iio: hid: Add humidity sensor support")
Signed-off-by: Ye Xiang <xiang.ye@xxxxxxxxx>
Cc: <Stable@xxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210303063615.12130-2-xiang.ye@xxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/humidity/hid-sensor-humidity.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/iio/humidity/hid-sensor-humidity.c
+++ b/drivers/iio/humidity/hid-sensor-humidity.c
@@ -28,7 +28,10 @@
 struct hid_humidity_state {
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info humidity_attr;
-	s32 humidity_data;
+	struct {
+		s32 humidity_data;
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
@@ -139,9 +142,8 @@ static int humidity_proc_event(struct hi
 	struct hid_humidity_state *humid_st = iio_priv(indio_dev);
 
 	if (atomic_read(&humid_st->common_attributes.data_ready))
-		iio_push_to_buffers_with_timestamp(indio_dev,
-					&humid_st->humidity_data,
-					iio_get_time_ns(indio_dev));
+		iio_push_to_buffers_with_timestamp(indio_dev, &humid_st->scan,
+						   iio_get_time_ns(indio_dev));
 
 	return 0;
 }
@@ -156,7 +158,7 @@ static int humidity_capture_sample(struc
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY:
-		humid_st->humidity_data = *(s32 *)raw_data;
+		humid_st->scan.humidity_data = *(s32 *)raw_data;
 
 		return 0;
 	default: