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path: root/drivers/iio/magnetometer/st_magn_buffer.c
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Diffstat (limited to 'drivers/iio/magnetometer/st_magn_buffer.c')
-rw-r--r--drivers/iio/magnetometer/st_magn_buffer.c31
1 files changed, 12 insertions, 19 deletions
diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
index 11d7806655bc..bb425c167a96 100644
--- a/drivers/iio/magnetometer/st_magn_buffer.c
+++ b/drivers/iio/magnetometer/st_magn_buffer.c
@@ -32,39 +32,32 @@ 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);
-
- mdata->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
- if (mdata->buffer_data == NULL) {
- err = -ENOMEM;
- goto allocate_memory_error;
- }
err = iio_triggered_buffer_postenable(indio_dev);
if (err < 0)
- goto st_magn_buffer_postenable_error;
+ return err;
+
+ 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:
- kfree(mdata->buffer_data);
-allocate_memory_error:
+st_magn_buffer_predisable:
+ iio_triggered_buffer_predisable(indio_dev);
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;
}