[3/4] iio:magn: preenable/postenable/predisable fixup for ST magn buffer
diff mbox series

Message ID 20190730000305.30958-4-denis.ciocca@st.com
State New
Headers show
Series
  • preenable/postenable/predisable fixup for ST drivers
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Commit Message

Denis Ciocca July 30, 2019, 12:03 a.m. UTC
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 | 22 +++++++++-------------
 1 file changed, 9 insertions(+), 13 deletions(-)

Comments

Ardelean, Alexandru July 30, 2019, 8:54 a.m. UTC | #1
On Mon, 2019-07-29 at 17:03 -0700, Denis Ciocca wrote:
> [External]
> 
> 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.

1 minor comment inline

Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>

> 
> Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
> ---
>  drivers/iio/magnetometer/st_magn_buffer.c | 22 +++++++++-------------
>  1 file changed, 9 insertions(+), 13 deletions(-)
> 
> diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
> index 9dba93539a99..8d06643a042d 100644
> --- a/drivers/iio/magnetometer/st_magn_buffer.c
> +++ b/drivers/iio/magnetometer/st_magn_buffer.c
> @@ -31,40 +31,36 @@ 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;

This looks more like style-change; but not a problem.

>  
>  	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;
>  
>  	return st_sensors_set_enable(indio_dev, true);
>  
> -st_magn_buffer_postenable_error:
> +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;
>  }

Patch
diff mbox series

diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
index 9dba93539a99..8d06643a042d 100644
--- a/drivers/iio/magnetometer/st_magn_buffer.c
+++ b/drivers/iio/magnetometer/st_magn_buffer.c
@@ -31,40 +31,36 @@  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;
 
 	return st_sensors_set_enable(indio_dev, true);
 
-st_magn_buffer_postenable_error:
+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;
 }