diff options
Diffstat (limited to 'drivers/iio/pressure')
-rw-r--r-- | drivers/iio/pressure/st_pressure_buffer.c | 38 |
1 files changed, 17 insertions, 21 deletions
diff --git a/drivers/iio/pressure/st_pressure_buffer.c b/drivers/iio/pressure/st_pressure_buffer.c index f21b630abaa0..77cb2d862f19 100644 --- a/drivers/iio/pressure/st_pressure_buffer.c +++ b/drivers/iio/pressure/st_pressure_buffer.c @@ -29,53 +29,49 @@ int st_press_trig_set_state(struct iio_trigger *trig, bool state) return st_sensors_set_dataready_irq(indio_dev, state); } -static int st_press_buffer_preenable(struct iio_dev *indio_dev) -{ - return st_sensors_set_enable(indio_dev, true); -} - static int st_press_buffer_postenable(struct iio_dev *indio_dev) { - int err; struct st_sensor_data *press_data = iio_priv(indio_dev); + int err; press_data->buffer_data = kmalloc(indio_dev->scan_bytes, GFP_DMA | GFP_KERNEL); - if (press_data->buffer_data == NULL) { - err = -ENOMEM; - goto allocate_memory_error; - } + if (!press_data->buffer_data) + return -ENOMEM; err = iio_triggered_buffer_postenable(indio_dev); if (err < 0) - goto st_press_buffer_postenable_error; + goto st_press_free_buffer; - return err; + err = st_sensors_set_enable(indio_dev, true); + if (err < 0) + goto st_press_buffer_predisable; + + return 0; -st_press_buffer_postenable_error: +st_press_buffer_predisable: + iio_triggered_buffer_predisable(indio_dev); +st_press_free_buffer: kfree(press_data->buffer_data); -allocate_memory_error: return err; } static int st_press_buffer_predisable(struct iio_dev *indio_dev) { - int err; struct st_sensor_data *press_data = iio_priv(indio_dev); - - err = iio_triggered_buffer_predisable(indio_dev); - if (err < 0) - goto st_press_buffer_predisable_error; + int err, err2; err = st_sensors_set_enable(indio_dev, false); -st_press_buffer_predisable_error: + err2 = iio_triggered_buffer_predisable(indio_dev); + if (!err) + err = err2; + kfree(press_data->buffer_data); return err; } static const struct iio_buffer_setup_ops st_press_buffer_setup_ops = { - .preenable = &st_press_buffer_preenable, .postenable = &st_press_buffer_postenable, .predisable = &st_press_buffer_predisable, }; |