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Commit 54e018da authored by Lars-Peter Clausen's avatar Lars-Peter Clausen Committed by Jonathan Cameron
Browse files

iio:ad7266: Mark transfer buffer as __be16 



Fixes the following warnings from sparse:
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16
	drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16

Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 791bb52a

drivers/iio/adc/ad7266.c

+12 −9
Original line number Diff line number Diff line
@@ -43,19 +43,22 @@ struct ad7266_state { 
	 * The buffer needs to be large enough to hold two samples (4 bytes) and

	 * the naturally aligned timestamp (8 bytes).

	 */

	uint8_t data[ALIGN(4, sizeof(s64)) + sizeof(s64)] ____cacheline_aligned;

	struct {

		__be16 sample[2];

		s64 timestamp;

	} data ____cacheline_aligned;

};



static int ad7266_wakeup(struct ad7266_state *st)

{

	/* Any read with >= 2 bytes will wake the device */

	return spi_read(st->spi, st->data, 2);

	return spi_read(st->spi, &st->data.sample[0], 2);

}



static int ad7266_powerdown(struct ad7266_state *st)

{

	/* Any read with < 2 bytes will powerdown the device */

	return spi_read(st->spi, st->data, 1);

	return spi_read(st->spi, &st->data.sample[0], 1);

}



static int ad7266_preenable(struct iio_dev *indio_dev)
@@ -84,9 +87,9 @@ static irqreturn_t ad7266_trigger_handler(int irq, void *p) 
	struct ad7266_state *st = iio_priv(indio_dev);

	int ret;



	ret = spi_read(st->spi, st->data, 4);

	ret = spi_read(st->spi, st->data.sample, 4);

	if (ret == 0) {

		iio_push_to_buffers_with_timestamp(indio_dev, st->data,

		iio_push_to_buffers_with_timestamp(indio_dev, &st->data,

			    pf->timestamp);

	}
@@ -137,7 +140,7 @@ static int ad7266_read_single(struct ad7266_state *st, int *val, 
	ad7266_select_input(st, address);



	ret = spi_sync(st->spi, &st->single_msg);

	*val = be16_to_cpu(st->data[address % 2]);

	*val = be16_to_cpu(st->data.sample[address % 2]);



	return ret;

}
@@ -442,15 +445,15 @@ static int ad7266_probe(struct spi_device *spi) 
	ad7266_init_channels(indio_dev);



	/* wakeup */

	st->single_xfer[0].rx_buf = &st->data;

	st->single_xfer[0].rx_buf = &st->data.sample[0];

	st->single_xfer[0].len = 2;

	st->single_xfer[0].cs_change = 1;

	/* conversion */

	st->single_xfer[1].rx_buf = &st->data;

	st->single_xfer[1].rx_buf = st->data.sample;

	st->single_xfer[1].len = 4;

	st->single_xfer[1].cs_change = 1;

	/* powerdown */

	st->single_xfer[2].tx_buf = &st->data;

	st->single_xfer[2].tx_buf = &st->data.sample[0];

	st->single_xfer[2].len = 1;



	spi_message_init(&st->single_msg);