| Message ID | 20190730000305.30958-2-denis.ciocca@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | preenable/postenable/predisable fixup for ST drivers | expand |
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. > 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. > Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com> > Signed-off-by: Denis Ciocca <denis.ciocca@st.com> > --- > drivers/iio/accel/st_accel_buffer.c | 37 ++++++++++------------------- > 1 file changed, 13 insertions(+), 24 deletions(-) > > diff --git a/drivers/iio/accel/st_accel_buffer.c b/drivers/iio/accel/st_accel_buffer.c > index 05f9aea431e2..81f89da125aa 100644 > --- a/drivers/iio/accel/st_accel_buffer.c > +++ b/drivers/iio/accel/st_accel_buffer.c > @@ -29,56 +29,46 @@ 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]); > if (err < 0) > - goto st_sensors_set_axis_enable_error; > + goto st_accel_buffer_predisable; > > - return err; > + return st_sensors_set_enable(indio_dev, true); > > -st_sensors_set_axis_enable_error: > +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 +78,6 @@ 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, > };
diff --git a/drivers/iio/accel/st_accel_buffer.c b/drivers/iio/accel/st_accel_buffer.c index 05f9aea431e2..81f89da125aa 100644 --- a/drivers/iio/accel/st_accel_buffer.c +++ b/drivers/iio/accel/st_accel_buffer.c @@ -29,56 +29,46 @@ 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]); if (err < 0) - goto st_sensors_set_axis_enable_error; + goto st_accel_buffer_predisable; - return err; + return st_sensors_set_enable(indio_dev, true); -st_sensors_set_axis_enable_error: +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 +78,6 @@ 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, };
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 | 37 ++++++++++------------------- 1 file changed, 13 insertions(+), 24 deletions(-)