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Commit 4389fbec authored by Peter Meerwald's avatar Peter Meerwald Committed by Jonathan Cameron
Browse files

iio: cleanup buffer setup code in max1363 driver 



use iio_triggered_buffer_setup(), iio_triggered_buffer_cleanup()

Signed-off-by: default avatarPeter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 99e02018

drivers/iio/adc/max1363.c

+5 −54
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <linux/iio/driver.h>

#include <linux/iio/kfifo_buf.h>

#include <linux/iio/trigger_consumer.h>

#include <linux/iio/triggered_buffer.h>



#define MAX1363_SETUP_BYTE(a) ((a) | 0x80)
@@ -1483,48 +1484,6 @@ static const struct iio_buffer_setup_ops max1363_buffered_setup_ops = { 
	.predisable = &iio_triggered_buffer_predisable,

};



static int max1363_register_buffered_funcs_and_init(struct iio_dev *indio_dev)

{

	struct max1363_state *st = iio_priv(indio_dev);

	int ret = 0;



	indio_dev->buffer = iio_kfifo_allocate(indio_dev);

	if (!indio_dev->buffer) {

		ret = -ENOMEM;

		goto error_ret;

	}

	indio_dev->pollfunc = iio_alloc_pollfunc(NULL,

						 &max1363_trigger_handler,

						 IRQF_ONESHOT,

						 indio_dev,

						 "%s_consumer%d",

						 st->client->name,

						 indio_dev->id);

	if (indio_dev->pollfunc == NULL) {

		ret = -ENOMEM;

		goto error_deallocate_sw_rb;

	}

	/* Buffer functions - here trigger setup related */

	indio_dev->setup_ops = &max1363_buffered_setup_ops;



	/* Flag that polled buffering is possible */

	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;



	return 0;



error_deallocate_sw_rb:

	iio_kfifo_free(indio_dev->buffer);

error_ret:

	return ret;

}



static void max1363_buffer_cleanup(struct iio_dev *indio_dev)

{

	/* ensure that the trigger has been detached */

	iio_dealloc_pollfunc(indio_dev->pollfunc);

	iio_kfifo_free(indio_dev->buffer);

}



static int __devinit max1363_probe(struct i2c_client *client,

				   const struct i2c_device_id *id)

{
@@ -1577,16 +1536,11 @@ static int __devinit max1363_probe(struct i2c_client *client, 
	if (ret < 0)

		goto error_free_available_scan_masks;



	ret = max1363_register_buffered_funcs_and_init(indio_dev);

	ret = iio_triggered_buffer_setup(indio_dev, NULL,

		&max1363_trigger_handler, &max1363_buffered_setup_ops);

	if (ret)

		goto error_free_available_scan_masks;



	ret = iio_buffer_register(indio_dev,

				  st->chip_info->channels,

				  st->chip_info->num_channels);

	if (ret)

		goto error_cleanup_buffer;



	if (client->irq) {

		ret = request_threaded_irq(st->client->irq,

					   NULL,
@@ -1607,9 +1561,7 @@ static int __devinit max1363_probe(struct i2c_client *client, 
error_free_irq:

	free_irq(st->client->irq, indio_dev);

error_uninit_buffer:

	iio_buffer_unregister(indio_dev);

error_cleanup_buffer:

	max1363_buffer_cleanup(indio_dev);

	iio_triggered_buffer_cleanup(indio_dev);

error_free_available_scan_masks:

	kfree(indio_dev->available_scan_masks);

error_unregister_map:
@@ -1632,8 +1584,7 @@ static int __devexit max1363_remove(struct i2c_client *client) 
	iio_device_unregister(indio_dev);

	if (client->irq)

		free_irq(st->client->irq, indio_dev);

	iio_buffer_unregister(indio_dev);

	max1363_buffer_cleanup(indio_dev);

	iio_triggered_buffer_cleanup(indio_dev);

	kfree(indio_dev->available_scan_masks);

	if (!IS_ERR(st->reg)) {

		regulator_disable(st->reg);