linux-kernel - [PATCH v2] staging: iio: ad7606: use iio_device_{claim|release}_direct

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Date:	Tue,  5 Apr 2016 21:11:31 -0700
From:	Alison Schofield <amsfield22@...il.com>
To:	jic23@...nel.org, linux-iio@...r.kernel.org
Cc:	lars@...afoo.de, knaack.h@....de, Michael.Hennerich@...log.com,
	pmeerw@...erw.net, gregkh@...uxfoundation.org,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] staging: iio: ad7606: use iio_device_{claim|release}_direct_mode()

Replace the code that guarantees the device stays in direct mode with
iio_device_{claim|release}_direct_mode() which does same.

Signed-off-by: Alison Schofield <amsfield22@...il.com>
---
Changed in v2:
 - removed improper application of claim/release from intr handler
 - updated changelog

 drivers/staging/iio/adc/ad7606_core.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/iio/adc/ad7606_core.c b/drivers/staging/iio/adc/ad7606_core.c
index 6dbc811..f79ee61 100644
--- a/drivers/staging/iio/adc/ad7606_core.c
+++ b/drivers/staging/iio/adc/ad7606_core.c
@@ -88,12 +88,12 @@ static int ad7606_read_raw(struct iio_dev *indio_dev,
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
-		if (iio_buffer_enabled(indio_dev))
-			ret = -EBUSY;
-		else
-			ret = ad7606_scan_direct(indio_dev, chan->address);
-		mutex_unlock(&indio_dev->mlock);
+		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;
-- 
2.1.4