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iio: imu: st_lsm6dsx: wait for settling time in st_lsm6dsx_read_oneshot

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commit ea85bf9064 upstream.

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: 290a6ce11d ("iio: imu: add support to lsm6dsx driver")
Reported-by: Mario Tesi <mario.tesi@st.com>
Tested-by: Mario Tesi <mario.tesi@st.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/b41ebda5535895298716c76d939f9f165fcd2d13.1644098120.git.lorenzo@kernel.org
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lorenzo Bianconi 2022-02-05 22:57:42 +01:00 committed by Greg Kroah-Hartman
parent c77f4ae7bd
commit 1f05c75684
1 changed files with 5 additions and 1 deletions
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6
drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
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@ -1372,8 +1372,12 @@ 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)