[PATCH 5/9] iio: gyro: adis16260: make use of the new lock helpers

[Nuno Sa <nuno.sa@analog.com>]

Use the new auto cleanup based locks so error paths are simpler.

While at it, reduce a bit the scope of the lock as we did not needed it
protecting all the data in the switch() branch.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
---
 drivers/iio/gyro/adis16260.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c
index 112d635b7dfd..495b64a27061 100644
--- a/drivers/iio/gyro/adis16260.c
+++ b/drivers/iio/gyro/adis16260.c
@@ -270,7 +270,6 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
 {
 	struct adis16260 *adis16260 = iio_priv(indio_dev);
 	struct adis *adis = &adis16260->adis;
-	int ret;
 	u8 addr;
 	u8 t;
 
@@ -288,7 +287,6 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
 		addr = adis16260_addresses[chan->scan_index][1];
 		return adis_write_reg_16(adis, addr, val);
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		adis_dev_lock(adis);
 		if (spi_get_device_id(adis->spi)->driver_data)
 			t = 256 / val;
 		else
@@ -298,15 +296,14 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
 			t = ADIS16260_SMPL_PRD_DIV_MASK;
 		else if (t > 0)
 			t--;
-
-		if (t >= 0x0A)
-			adis->spi->max_speed_hz = ADIS16260_SPI_SLOW;
-		else
-			adis->spi->max_speed_hz = ADIS16260_SPI_FAST;
-		ret = __adis_write_reg_8(adis, ADIS16260_SMPL_PRD, t);
-
-		adis_dev_unlock(adis);
-		return ret;
+		adis_dev_auto_scoped_lock(adis) {
+			if (t >= 0x0A)
+				adis->spi->max_speed_hz = ADIS16260_SPI_SLOW;
+			else
+				adis->spi->max_speed_hz = ADIS16260_SPI_FAST;
+			return __adis_write_reg_8(adis, ADIS16260_SMPL_PRD, t);
+		}
+		unreachable();
 	}
 	return -EINVAL;
 }

-- 
2.45.2