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authorLorenzo Bianconi <lorenzo@kernel.org>2022-02-06 00:57:42 +0300
committerJonathan Cameron <Jonathan.Cameron@huawei.com>2022-02-07 23:45:49 +0300
commitea85bf906466191b58532bb19f4fbb4591f0a77e (patch)
treeea6de5863a45d3716465aee78cc38140eb90c320 /drivers/iio/imu
parent632fe0bb8c5b9c06ec961f575ee42a6fff5eceeb (diff)
downloadlinux-ea85bf906466191b58532bb19f4fbb4591f0a77e.tar.xz
iio: imu: st_lsm6dsx: wait for settling time in st_lsm6dsx_read_oneshot
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: 290a6ce11d93 ("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>
Diffstat (limited to 'drivers/iio/imu')
-rw-r--r--drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c6
1 files changed, 5 insertions, 1 deletions
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)