[PATCH 5/5] iio:bmi160:snap timestamp closer to event

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From: Martin Kelly <martin@xxxxxxxxxxxxxxxx>

Currently, we snap the timestamp after reading from the buffer and
processing the event. When the IIO poll function is triggered by an
interrupt,  we can get a slightly more accurate timestamp by snapping it
prior to reading the data, since the data was already generated prior to
entering the trigger handler. This is not going to make a huge difference,
but we might as well improve slightly.

Signed-off-by: Martin Kelly <martin@xxxxxxxxxxxxxxxx>
---
 drivers/iio/imu/bmi160/bmi160_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/imu/bmi160/bmi160_core.c b/drivers/iio/imu/bmi160/bmi160_core.c
index e119965e64a3..4b4456af0971 100644
--- a/drivers/iio/imu/bmi160/bmi160_core.c
+++ b/drivers/iio/imu/bmi160/bmi160_core.c
@@ -408,6 +408,7 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
+	s64 ts = iio_get_time_ns(indio_dev);
 	struct bmi160_data *data = iio_priv(indio_dev);
 	__le16 buf[16];
 	/* 3 sens x 3 axis x __le16 + 3 x __le16 pad + 4 x __le16 tstamp */
@@ -423,8 +424,7 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
 		buf[j++] = sample;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
-					   iio_get_time_ns(indio_dev));
+	iio_push_to_buffers_with_timestamp(indio_dev, buf, ts);
 done:
 	iio_trigger_notify_done(indio_dev->trig);
 	return IRQ_HANDLED;
-- 
2.11.0




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