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FAILED: patch "[PATCH] iio: imu: st_lsm6dsx: wait for settling time in" failed to apply to 4.19-stable tree

PATCH [email protected] 1 participant 1 message Feb 28, 2022

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The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From ea85bf906466191b58532bb19f4fbb4591f0a77e Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <[email protected]>
Date: Sat, 5 Feb 2022 22:57:42 +0100
Subject: [PATCH] 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.

drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c +5 -1
index 727b4b6ac696..93f0c6bce502 100644
@@ -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)