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iio: hid-sensor-temperature: Fix issues of timestamp channel

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commit 141e7633aa4d2838d1f6ad5c74cccc53547c16ac upstream.

This patch fixes 2 issues of timestamp channel:
1. This patch ensures that there is sufficient space and correct
alignment for the timestamp.
2. Correct the timestamp channel scan index.

Fixes: 59d0f2da3569 ("iio: hid: Add temperature sensor support")
Signed-off-by: Ye Xiang <xiang.ye@intel.com>
Cc: <Stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210303063615.12130-4-xiang.ye@intel.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ye Xiang 2021-03-03 14:36:14 +08:00 committed by Greg Kroah-Hartman
parent 31a2e804ad
commit 850ca1c013
1 changed files with 8 additions and 6 deletions
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14
drivers/iio/temperature/hid-sensor-temperature.c
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@ -17,7 +17,10 @@
struct temperature_state {
struct hid_sensor_common common_attributes;
struct hid_sensor_hub_attribute_info temperature_attr;
s32 temperature_data;
struct {
s32 temperature_data;
u64 timestamp __aligned(8);
} scan;
int scale_pre_decml;
int scale_post_decml;
int scale_precision;
@ -34,7 +37,7 @@ static const struct iio_chan_spec temperature_channels[] = {
BIT(IIO_CHAN_INFO_SAMP_FREQ) |
BIT(IIO_CHAN_INFO_HYSTERESIS),
},
IIO_CHAN_SOFT_TIMESTAMP(3),
IIO_CHAN_SOFT_TIMESTAMP(1),
};
/* Adjust channel real bits based on report descriptor */
@ -125,9 +128,8 @@ static int temperature_proc_event(struct hid_sensor_hub_device *hsdev,
struct temperature_state *temp_st = iio_priv(indio_dev);
if (atomic_read(&temp_st->common_attributes.data_ready))
iio_push_to_buffers_with_timestamp(indio_dev,
&temp_st->temperature_data,
iio_get_time_ns(indio_dev));
iio_push_to_buffers_with_timestamp(indio_dev, &temp_st->scan,
iio_get_time_ns(indio_dev));
return 0;
}
@ -142,7 +144,7 @@ static int temperature_capture_sample(struct hid_sensor_hub_device *hsdev,
switch (usage_id) {
case HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE:
temp_st->temperature_data = *(s32 *)raw_data;
temp_st->scan.temperature_data = *(s32 *)raw_data;
return 0;
default:
return -EINVAL;