diff options
| author |   Denis Ciocca <denis.ciocca@st.com> | 2019-08-05 11:57:11 -0700 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-08-11 09:26:04 +0100 |
| commit | e031d5f558f1535968df1ecae8d734b84c17f78d (patch) | |
| tree | 663fb1b5ab579c6486d387e5dabe3ab747535e86 /drivers/iio/gyro | |
| parent | iio: imu: inv_mpu6050: be more explicit on supported chips (diff) | |
| download | linux-dev-e031d5f558f1535968df1ecae8d734b84c17f78d.tar.xz linux-dev-e031d5f558f1535968df1ecae8d734b84c17f78d.zip | |
iio:st_sensors: remove buffer allocation at each buffer enable
This patch is removing the buffer allocation at each buffer enable.
We just allocate enough memory in the main structure during probe
to cover maximum size needed (that anyway is pretty small) [16bytes].
Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/gyro')
| -rw-r--r-- | drivers/iio/gyro/st_gyro_buffer.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/drivers/iio/gyro/st_gyro_buffer.c b/drivers/iio/gyro/st_gyro_buffer.c index c6ddfecc1fc3..7465ad62391c 100644 --- a/drivers/iio/gyro/st_gyro_buffer.c +++ b/drivers/iio/gyro/st_gyro_buffer.c @@ -31,17 +31,11 @@ int st_gyro_trig_set_state(struct iio_trigger *trig, bool state) static int st_gyro_buffer_postenable(struct iio_dev *indio_dev) { - struct st_sensor_data *gdata = iio_priv(indio_dev); int err; - gdata->buffer_data = kmalloc(indio_dev->scan_bytes, - GFP_DMA | GFP_KERNEL); - if (!gdata->buffer_data) - return -ENOMEM; - err = iio_triggered_buffer_postenable(indio_dev); if (err < 0) - goto st_gyro_free_buffer; + return err; err = st_sensors_set_axis_enable(indio_dev, (u8)indio_dev->active_scan_mask[0]); @@ -58,15 +52,12 @@ st_gyro_buffer_enable_all_axis: st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS); st_gyro_buffer_predisable: iio_triggered_buffer_predisable(indio_dev); -st_gyro_free_buffer: - kfree(gdata->buffer_data); return err; } static int st_gyro_buffer_predisable(struct iio_dev *indio_dev) { int err, err2; - struct st_sensor_data *gdata = iio_priv(indio_dev); err = st_sensors_set_enable(indio_dev, false); if (err < 0) @@ -79,7 +70,6 @@ st_gyro_buffer_predisable: if (!err) err = err2; - kfree(gdata->buffer_data); return err; } |