iio: hid-sensor-humidity: Fix alignment issue of timestamp channel

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@intel.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210303063615.12130-2-xiang.ye@intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/humidity/hid-sensor-humidity.c b/drivers/iio/humidity/hid-sensor-humidity.c
index 52f6051..d627054 100644 (file)
--- a/drivers/iio/humidity/hid-sensor-humidity.c
+++ b/drivers/iio/humidity/hid-sensor-humidity.c
@@ -15,7 +15,10 @@
 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;
@@ -125,9 +128,8 @@ static int humidity_proc_event(struct hid_sensor_hub_device *hsdev,
        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;
 }
@@ -142,7 +144,7 @@ static int humidity_capture_sample(struct hid_sensor_hub_device *hsdev,
 
        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: