linux-kernel - [PATCH 1/2] iio: adc: ad7606: using claim_direct

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Date: Wed,  1 May 2024 18:57:23 -0300
From: Jorge Harrisonn <jorge.harrisonn@....br>
To: jic23@...nel.org,
	lars@...afoo.de
Cc: Jorge Harrisonn <jorge.harrisonn@....br>,
	linux-iio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	laisnuto@....br
Subject: [PATCH 1/2] iio: adc: ad7606: using claim_direct_scoped for code simplification

Using iio_device_claim_direct_scoped instead of calling `iio_device
_claim_direct_modeand later callingiio_device_release_direct_mode`

This should make code cleaner and error handling easier

Co-authored-by: Lais Nuto <laisnuto@....br>
Signed-off-by: Lais Nuto <laisnuto@....br>
Signed-off-by: Jorge Harrisonn <jorge.harrisonn@....br>
---
 drivers/iio/adc/ad7606.c | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
index 1928d9ae5bcf..fa989e0d7e70 100644
--- a/drivers/iio/adc/ad7606.c
+++ b/drivers/iio/adc/ad7606.c
@@ -174,17 +174,14 @@ static int ad7606_read_raw(struct iio_dev *indio_dev,
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
-
-		ret = ad7606_scan_direct(indio_dev, chan->address);
-		iio_device_release_direct_mode(indio_dev);
-
-		if (ret < 0)
-			return ret;
-		*val = (short)ret;
-		return IIO_VAL_INT;
+		iio_device_claim_direct_scoped(return -EBUSY, indio_dev) {
+			ret = ad7606_scan_direct(indio_dev, chan->address);
+			if (ret < 0) 
+				return ret;
+			*val = (short) ret;
+			return IIO_VAL_INT;
+		}
+		unreachable();
 	case IIO_CHAN_INFO_SCALE:
 		if (st->sw_mode_en)
 			ch = chan->address;
-- 
2.34.1