On Sat, 5 Feb 2022 22:57:42 +0100
Lorenzo Bianconi <lorenzo@xxxxxxxxxx> wrote:
> We need to wait for sensor settling time (~ 3/ODR) before reading data
> in st_lsm6dsx_read_oneshot routine in order to avoid corrupted samples.
>
> Fixes: 290a6ce11d938 ("iio: imu: add support to lsm6dsx driver")
> Reported-by: Mario Tesi <mario.tesi@xxxxxx>
> Tested-by: Mario Tesi <mario.tesi@xxxxxx>
> Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Thanks for the quick update.
Applied to the fixes-togreg branch of iio.git and marked for stable.
> ---
> Changes since v1:
> - add missing Fixes tag.
> ---
> drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 6 +++++-
> 1 file changed, 5 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> index 727b4b6ac696..93f0c6bce502 100644
> --- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> +++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
> @@ -1374,8 +1374,12 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
> if (err < 0)
> return err;
>
> + /*
> + * we need to wait for sensor settling time before
> + * reading data in order to avoid corrupted samples
> + */
> delay = 1000000000 / sensor->odr;
> - usleep_range(delay, 2 * delay);
> + usleep_range(3 * delay, 4 * delay);
>
> err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
> if (err < 0)
