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patch "iio: imu: fxos8700: fix incomplete ACCEL and MAGN channels readback" added to char-misc-linus

PATCH [email protected] 1 participant 1 message Jan 31, 2023

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This is a note to let you know that I've just added the patch titled

iio: imu: fxos8700: fix incomplete ACCEL and MAGN channels readback

to my char-misc git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 37a94d86d7050665d6d01378b2c916c28e454f10 Mon Sep 17 00:00:00 2001
From: Carlos Song <[email protected]>
Date: Thu, 8 Dec 2022 15:19:07 +0800
Subject: iio: imu: fxos8700: fix incomplete ACCEL and MAGN channels readback

The length of ACCEL and MAGN 3-axis channels output data is 6 byte individually. However block only read 3 bytes data into buffer from ACCEL or MAGN output data registers every time. It causes an incomplete ACCEL and MAGN channels readback.

Set correct value count for regmap_bulk_read to get 6 bytes ACCEL and MAGN channels readback.

Fixes 84e5ddd5c46e ("iio: imu: Add support for the FXOS8700 IMU")
---
 drivers/iio/imu/fxos8700_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/iio/imu/fxos8700_core.c +1 -1
index 977eb7dc7dbd..b62bc92bbacc 100644
@@ -414,7 +414,7 @@ static int fxos8700_get_data(struct fxos8700_data *data, int chan_type,
 
 	/* Block read 6 bytes of device output registers to avoid data loss */
 	ret = regmap_bulk_read(data->regmap, base, data->buf,
-			       FXOS8700_DATA_BUF_SIZE);
+			       sizeof(data->buf));
 	if (ret)
 		return ret;
 
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