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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 1/4] iio:accel: preenable/postenable/predisable fixup for ST accel buffer
Date: Wed, 31 Jul 2019 14:48:57 -0700
Message-ID: <20190731214900.15380-2-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.
There is no need of using preenable, all can be done into
postenable.
Let's also rename the goto label using operation to perform and not
where it fails.

Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
---
 drivers/iio/accel/st_accel_buffer.c | 45 +++++++++++++----------------
 1 file changed, 20 insertions(+), 25 deletions(-)

diff --git a/drivers/iio/accel/st_accel_buffer.c b/drivers/iio/accel/st_accel_buffer.c
index 05f9aea431e2..59dcef02ec19 100644
--- a/drivers/iio/accel/st_accel_buffer.c
+++ b/drivers/iio/accel/st_accel_buffer.c
@@ -29,56 +29,52 @@ int st_accel_trig_set_state(struct iio_trigger *trig, bool state)
 	return st_sensors_set_dataready_irq(indio_dev, state);
 }
 
-static int st_accel_buffer_preenable(struct iio_dev *indio_dev)
-{
-	return st_sensors_set_enable(indio_dev, true);
-}
-
 static int st_accel_buffer_postenable(struct iio_dev *indio_dev)
 {
-	int err;
 	struct st_sensor_data *adata = iio_priv(indio_dev);
+	int err;
 
 	adata->buffer_data = kmalloc(indio_dev->scan_bytes,
 				     GFP_DMA | GFP_KERNEL);
-	if (adata->buffer_data == NULL) {
-		err = -ENOMEM;
-		goto allocate_memory_error;
-	}
+	if (!adata->buffer_data)
+		return -ENOMEM;
 
 	err = iio_triggered_buffer_postenable(indio_dev);
 	if (err < 0)
-		goto st_accel_buffer_postenable_error;
+		goto st_accel_free_buffer;
 
 	err = st_sensors_set_axis_enable(indio_dev,
-					(u8)indio_dev->active_scan_mask[0]);
+					 (u8)indio_dev->active_scan_mask[0]);
 	if (err < 0)
-		goto st_sensors_set_axis_enable_error;
+		goto st_accel_buffer_predisable;
 
-	return err;
+	err = st_sensors_set_enable(indio_dev, true);
+	if (err < 0)
+		goto st_accel_buffer_enable_all_axis;
+
+	return 0;
 
-st_sensors_set_axis_enable_error:
+st_accel_buffer_enable_all_axis:
+	st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
+st_accel_buffer_predisable:
 	iio_triggered_buffer_predisable(indio_dev);
-st_accel_buffer_postenable_error:
+st_accel_free_buffer:
 	kfree(adata->buffer_data);
-allocate_memory_error:
 	return err;
 }
 
 static int st_accel_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int err, err2;
 	struct st_sensor_data *adata = iio_priv(indio_dev);
-
-	err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
-	if (err < 0)
-		goto st_accel_buffer_predisable_error;
+	int err, err2;
 
 	err = st_sensors_set_enable(indio_dev, false);
 	if (err < 0)
-		goto st_accel_buffer_predisable_error;
+		goto st_accel_buffer_predisable;
+
+	err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
 
-st_accel_buffer_predisable_error:
+st_accel_buffer_predisable:
 	err2 = iio_triggered_buffer_predisable(indio_dev);
 	if (!err)
 		err = err2;
@@ -88,7 +84,6 @@ static int st_accel_buffer_predisable(struct iio_dev *indio_dev)
 }
 
 static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = {
-	.preenable = &st_accel_buffer_preenable,
 	.postenable = &st_accel_buffer_postenable,
 	.predisable = &st_accel_buffer_predisable,
 };
-- 
2.22.0


  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 ` Denis Ciocca [this message]
2019-08-01  8:21   ` [PATCH v2 1/4] iio:accel: preenable/postenable/predisable fixup for ST accel buffer 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 ` [PATCH v2 3/4] iio:magn: preenable/postenable/predisable fixup for ST magn buffer Denis Ciocca
2019-08-01  8:22   ` 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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