diff options
Diffstat (limited to 'drivers/iio/magnetometer/st_magn_buffer.c')
| -rw-r--r-- | drivers/iio/magnetometer/st_magn_buffer.c | 54 |
1 files changed, 5 insertions, 49 deletions
diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c index 37ab30566464..79987f42e8d9 100644 --- a/drivers/iio/magnetometer/st_magn_buffer.c +++ b/drivers/iio/magnetometer/st_magn_buffer.c @@ -1,23 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * STMicroelectronics magnetometers driver * * Copyright 2012-2013 STMicroelectronics Inc. * * Denis Ciocca <denis.ciocca@st.com> - * - * Licensed under the GPL-2. */ -#include <linux/module.h> #include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/stat.h> -#include <linux/interrupt.h> -#include <linux/i2c.h> -#include <linux/delay.h> #include <linux/iio/iio.h> #include <linux/iio/buffer.h> -#include <linux/iio/trigger_consumer.h> +#include <linux/iio/trigger.h> #include <linux/iio/triggered_buffer.h> #include <linux/iio/common/st_sensors.h> @@ -32,41 +25,12 @@ 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 st_sensors_set_enable(indio_dev, true); - -st_magn_buffer_postenable_error: - 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); - - err = st_sensors_set_enable(indio_dev, false); - if (err < 0) - goto st_magn_buffer_predisable_error; - - err = iio_triggered_buffer_predisable(indio_dev); - -st_magn_buffer_predisable_error: - kfree(mdata->buffer_data); - return err; + return st_sensors_set_enable(indio_dev, false); } static const struct iio_buffer_setup_ops st_magn_buffer_setup_ops = { @@ -76,15 +40,7 @@ static const struct iio_buffer_setup_ops st_magn_buffer_setup_ops = { int st_magn_allocate_ring(struct iio_dev *indio_dev) { - return iio_triggered_buffer_setup(indio_dev, NULL, - &st_sensors_trigger_handler, &st_magn_buffer_setup_ops); -} - -void st_magn_deallocate_ring(struct iio_dev *indio_dev) -{ - iio_triggered_buffer_cleanup(indio_dev); + return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev, + NULL, &st_sensors_trigger_handler, &st_magn_buffer_setup_ops); } -MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); -MODULE_DESCRIPTION("STMicroelectronics magnetometers buffer"); -MODULE_LICENSE("GPL v2"); |