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From: Denis Ciocca <denis.ciocca@st.com>
To: <linux-iio@vger.kernel.org>, <alexandru.Ardelean@analog.com>,
	<jic23@kernel.org>
Cc: Denis Ciocca <denis.ciocca@st.com>
Subject: [PATCH v2 3/4] iio:magn: preenable/postenable/predisable fixup for ST magn buffer
Date: Wed, 31 Jul 2019 14:48:59 -0700
Message-ID: <20190731214900.15380-4-denis.ciocca@st.com> (raw)
In-Reply-To: <20190731214900.15380-1-denis.ciocca@st.com>

This patch is trying to cleanup for good the buffers operation functions.
Let's rename the goto label using operation to perform and not
where it fails.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
---
 drivers/iio/magnetometer/st_magn_buffer.c | 30 ++++++++++++-----------
 1 file changed, 16 insertions(+), 14 deletions(-)

diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
index 9dba93539a99..658d627dad8e 100644
--- a/drivers/iio/magnetometer/st_magn_buffer.c
+++ b/drivers/iio/magnetometer/st_magn_buffer.c
@@ -31,40 +31,42 @@ int st_magn_trig_set_state(struct iio_trigger *trig, bool state)
 
 static int st_magn_buffer_postenable(struct iio_dev *indio_dev)
 {
-	int err;
 	struct st_sensor_data *mdata = iio_priv(indio_dev);
+	int err;
 
 	mdata->buffer_data = kmalloc(indio_dev->scan_bytes,
 				     GFP_DMA | GFP_KERNEL);
-	if (mdata->buffer_data == NULL) {
-		err = -ENOMEM;
-		goto allocate_memory_error;
-	}
+	if (!mdata->buffer_data)
+		return -ENOMEM;
 
 	err = iio_triggered_buffer_postenable(indio_dev);
 	if (err < 0)
-		goto st_magn_buffer_postenable_error;
+		goto st_magn_free_buffer;
+
+	err = st_sensors_set_enable(indio_dev, true);
+	if (err < 0)
+		goto st_magn_buffer_predisable;
 
-	return st_sensors_set_enable(indio_dev, true);
+	return 0;
 
-st_magn_buffer_postenable_error:
+st_magn_buffer_predisable:
+	iio_triggered_buffer_predisable(indio_dev);
+st_magn_free_buffer:
 	kfree(mdata->buffer_data);
-allocate_memory_error:
 	return err;
 }
 
 static int st_magn_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int err;
 	struct st_sensor_data *mdata = iio_priv(indio_dev);
+	int err, err2;
 
 	err = st_sensors_set_enable(indio_dev, false);
-	if (err < 0)
-		goto st_magn_buffer_predisable_error;
 
-	err = iio_triggered_buffer_predisable(indio_dev);
+	err2 = iio_triggered_buffer_predisable(indio_dev);
+	if (!err)
+		err = err2;
 
-st_magn_buffer_predisable_error:
 	kfree(mdata->buffer_data);
 	return err;
 }
-- 
2.22.0


  parent reply index

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-31 21:48 [PATCH v2 0/4] preenable/postenable/predisable fixup for ST drivers Denis Ciocca
2019-07-31 21:48 ` [PATCH v2 1/4] iio:accel: preenable/postenable/predisable fixup for ST accel buffer Denis Ciocca
2019-08-01  8:21   ` Ardelean, Alexandru
2019-08-05 14:46     ` Jonathan Cameron
2019-07-31 21:48 ` [PATCH v2 2/4] iio:gyro: preenable/postenable/predisable fixup for ST gyro buffer Denis Ciocca
2019-08-01  8:22   ` Ardelean, Alexandru
2019-08-05 14:46     ` Jonathan Cameron
2019-07-31 21:48 ` Denis Ciocca [this message]
2019-08-01  8:22   ` [PATCH v2 3/4] iio:magn: preenable/postenable/predisable fixup for ST magn buffer Ardelean, Alexandru
2019-08-05 14:47     ` Jonathan Cameron
2019-07-31 21:49 ` [PATCH v2 4/4] iio:pressure: preenable/postenable/predisable fixup for ST press buffer Denis Ciocca
2019-08-01  8:22   ` Ardelean, Alexandru
2019-08-05 14:49     ` Jonathan Cameron

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