iio: proximity: lidar: switch to iio_device_claim_*_mode helpers

Switch from using indio_dev->mlock to the iio_device_claim_*_mode
helper functions.

Signed-off-by: Matt Ranostay <mranostay@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index 4f50238..c0b0e82 100644 (file)
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -203,22 +203,19 @@ static int lidar_read_raw(struct iio_dev *indio_dev,
        struct lidar_data *data = iio_priv(indio_dev);
        int ret = -EINVAL;
 
-       mutex_lock(&indio_dev->mlock);
-
-       if (iio_buffer_enabled(indio_dev) && mask == IIO_CHAN_INFO_RAW) {
-               ret = -EBUSY;
-               goto error_busy;
-       }
-
        switch (mask) {
        case IIO_CHAN_INFO_RAW: {
                u16 reg;
 
+               if (iio_device_claim_direct_mode(indio_dev))
+                       return -EBUSY;
+
                ret = lidar_get_measurement(data, &reg);
                if (!ret) {
                        *val = reg;
                        ret = IIO_VAL_INT;
                }
+               iio_device_release_direct_mode(indio_dev);
                break;
        }
        case IIO_CHAN_INFO_SCALE:
@@ -228,9 +225,6 @@ static int lidar_read_raw(struct iio_dev *indio_dev,
                break;
        }
 
-error_busy:
-       mutex_unlock(&indio_dev->mlock);
-
        return ret;
 }