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staging:iio:meter:ade7758 switch from sw_ring to kfifo

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sw ring is going away so switch over to kfifo based buffer implementation.
The only real change is that poll will return on some data there rather than
buffer 50% full.

Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Jonathan Cameron 2012-11-30 14:22:00 +00:00
parent 032658a446
commit 94f3c7cd82
2 changed files with 7 additions and 7 deletions
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2
drivers/staging/iio/meter/Kconfig
View File

@ -21,7 +21,7 @@ config ADE7758
tristate "Analog Devices ADE7758 Poly Phase Multifunction Energy Metering IC Driver"
depends on SPI
select IIO_TRIGGER if IIO_BUFFER
select IIO_SW_RING if IIO_BUFFER
select IIO_KFIFO_BUF if IIO_BUFFER
help
Say yes here to build support for Analog Devices ADE7758 Polyphase
Multifunction Energy Metering IC with Per Phase Information Driver.

12
drivers/staging/iio/meter/ade7758_ring.c
View File

@ -13,7 +13,7 @@
#include <asm/unaligned.h>
#include <linux/iio/iio.h>
#include "../ring_sw.h"
#include <linux/iio/kfifo_buf.h>
#include <linux/iio/trigger_consumer.h>
#include "ade7758.h"
@ -119,7 +119,7 @@ static const struct iio_buffer_setup_ops ade7758_ring_setup_ops = {
void ade7758_unconfigure_ring(struct iio_dev *indio_dev)
{
iio_dealloc_pollfunc(indio_dev->pollfunc);
iio_sw_rb_free(indio_dev->buffer);
iio_kfifo_free(indio_dev->buffer);
}
int ade7758_configure_ring(struct iio_dev *indio_dev)
@ -127,7 +127,7 @@ int ade7758_configure_ring(struct iio_dev *indio_dev)
struct ade7758_state *st = iio_priv(indio_dev);
int ret = 0;
indio_dev->buffer = iio_sw_rb_allocate(indio_dev);
indio_dev->buffer = iio_kfifo_allocate(indio_dev);
if (!indio_dev->buffer) {
ret = -ENOMEM;
return ret;
@ -143,7 +143,7 @@ int ade7758_configure_ring(struct iio_dev *indio_dev)
indio_dev->id);
if (indio_dev->pollfunc == NULL) {
ret = -ENOMEM;
goto error_iio_sw_rb_free;
goto error_iio_kfifo_free;
}
indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
@ -183,8 +183,8 @@ int ade7758_configure_ring(struct iio_dev *indio_dev)
return 0;
error_iio_sw_rb_free:
iio_sw_rb_free(indio_dev->buffer);
error_iio_kfifo_free:
iio_kfifo_free(indio_dev->buffer);
return ret;
}