iio: imu: st_lsm6dsx: fix FIFO_CTRL2 overwrite during watermark configuration

Fixes: 290a6ce11d93 (iio: imu: add support to lsm6dsx driver)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index 78532ce..81b572d 100644 (file)
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -193,8 +193,8 @@ int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor, u16 watermark)
        if (err < 0)
                goto out;
 
-       fifo_watermark = ((data & ~ST_LSM6DSX_FIFO_TH_MASK) << 8) |
-                         (fifo_watermark & ST_LSM6DSX_FIFO_TH_MASK);
+       fifo_watermark = ((data << 8) & ~ST_LSM6DSX_FIFO_TH_MASK) |
+                        (fifo_watermark & ST_LSM6DSX_FIFO_TH_MASK);
 
        wdata = cpu_to_le16(fifo_watermark);
        err = hw->tf->write(hw->dev, ST_LSM6DSX_REG_FIFO_THL_ADDR,