[RFC PATCH 4/8] iio: imu: bmi323: Use cleanup handling for iio_device_claim_direct_mode()

[Jonathan Cameron <jic23@kernel.org>]

From: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Similar to existing use of guard() in this driver,
CLASS(iio_claim_direct, claimed_dev)(indio_Dev);
if (IS_ERR(claimed_dev))
	return PTR_ERR(claimed_dev);

will ensure that scope based cleanup occurs.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
---
 drivers/iio/imu/bmi323/bmi323_core.c | 61 ++++++++++++----------------
 1 file changed, 27 insertions(+), 34 deletions(-)

diff --git a/drivers/iio/imu/bmi323/bmi323_core.c b/drivers/iio/imu/bmi323/bmi323_core.c
index 0bd5dedd9a63..c9784ad01d44 100644
--- a/drivers/iio/imu/bmi323/bmi323_core.c
+++ b/drivers/iio/imu/bmi323/bmi323_core.c
@@ -1671,34 +1671,30 @@ static int bmi323_write_raw(struct iio_dev *indio_dev,
 	int ret;
 
 	switch (mask) {
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ: {
+		CLASS(iio_claim_direct, claimed_dev)(indio_dev);
+		if (IS_ERR(claimed_dev))
+			return PTR_ERR(claimed_dev);
 
-		ret = bmi323_set_odr(data, bmi323_iio_to_sensor(chan->type),
-				     val, val2);
-		iio_device_release_direct_mode(indio_dev);
-		return ret;
-	case IIO_CHAN_INFO_SCALE:
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
-
-		ret = bmi323_set_scale(data, bmi323_iio_to_sensor(chan->type),
-				       val, val2);
-		iio_device_release_direct_mode(indio_dev);
-		return ret;
-	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
+		return bmi323_set_odr(data, bmi323_iio_to_sensor(chan->type),
+				      val, val2);
+	}
+	case IIO_CHAN_INFO_SCALE: {
+		CLASS(iio_claim_direct, claimed_dev)(indio_dev);
+		if (IS_ERR(claimed_dev))
+			return PTR_ERR(claimed_dev);
 
-		ret = bmi323_set_average(data, bmi323_iio_to_sensor(chan->type),
-					 val);
+		return bmi323_set_scale(data, bmi323_iio_to_sensor(chan->type),
+					val, val2);
+	}
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO: {
+		CLASS(iio_claim_direct, claimed_dev)(indio_dev);
+		if (IS_ERR(claimed_dev))
+			return PTR_ERR(claimed_dev);
 
-		iio_device_release_direct_mode(indio_dev);
-		return ret;
+		return bmi323_set_average(data, bmi323_iio_to_sensor(chan->type),
+					  val);
+	}
 	case IIO_CHAN_INFO_ENABLE:
 		return bmi323_enable_steps(data, val);
 	case IIO_CHAN_INFO_PROCESSED:
@@ -1724,7 +1720,6 @@ static int bmi323_read_raw(struct iio_dev *indio_dev,
 			   int *val2, long mask)
 {
 	struct bmi323_data *data = iio_priv(indio_dev);
-	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_PROCESSED:
@@ -1732,15 +1727,13 @@ static int bmi323_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_RAW:
 		switch (chan->type) {
 		case IIO_ACCEL:
-		case IIO_ANGL_VEL:
-			ret = iio_device_claim_direct_mode(indio_dev);
-			if (ret)
-				return ret;
+		case IIO_ANGL_VEL: {
+			CLASS(iio_claim_direct, claimed_dev)(indio_dev);
+			if (IS_ERR(claimed_dev))
+				return PTR_ERR(claimed_dev);
 
-			ret = bmi323_read_axis(data, chan, val);
-
-			iio_device_release_direct_mode(indio_dev);
-			return ret;
+			return bmi323_read_axis(data, chan, val);
+		}
 		case IIO_TEMP:
 			return bmi323_get_temp_data(data, val);
 		default:
-- 
2.42.0