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staging:iio:gyro:adis16130 fix adis16130_spi_read which was never selecting the channel

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Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jonathan Cameron 2011-08-12 16:55:28 +01:00 committed by Greg Kroah-Hartman
parent 51ce068c50
commit cdf6e81790
1 changed files with 13 additions and 4 deletions
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17
drivers/staging/iio/gyro/adis16130_core.c
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@ -75,15 +75,24 @@ static int adis16130_spi_read(struct device *dev, u8 reg_addr,
int ret;
struct iio_dev *indio_dev = dev_get_drvdata(dev);
struct adis16130_state *st = iio_priv(indio_dev);
struct spi_message msg;
struct spi_transfer xfer = {
.tx_buf = st->buf,
.rx_buf = st->buf,
};
mutex_lock(&st->buf_lock);
st->buf[0] = ADIS16130_CON_RD | reg_addr;
if (st->mode)
ret = spi_read(st->us, st->buf, 4);
else
ret = spi_read(st->us, st->buf, 3);
st->buf[1] = st->buf[2] = st->buf[3] = 0;
if (st->mode)
xfer.len = 4;
else
xfer.len = 3;
spi_message_init(&msg);
spi_message_add_tail(&xfer, &msg);
ret = spi_sync(st->us, &msg);
if (ret == 0) {
if (st->mode)
*val = (st->buf[1] << 16) |