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iio: adc: ad7266: claim direct mode during sensor read

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Driver was checking for direct mode but not locking it down.
Use iio_device_claim_direct_mode() to guarantee device stays
in direct mode.

Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Alison Schofield 2016-05-24 12:16:23 -07:00 committed by Jonathan Cameron
parent 14f295c846
commit c70df20e31
1 changed files with 3 additions and 4 deletions
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7
drivers/iio/adc/ad7266.c
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@ -154,12 +154,11 @@ static int ad7266_read_raw(struct iio_dev *indio_dev,
switch (m) {
case IIO_CHAN_INFO_RAW:
if (iio_buffer_enabled(indio_dev))
return -EBUSY;
ret = ad7266_read_single(st, val, chan->address);
ret = iio_device_claim_direct_mode(indio_dev);
if (ret)
return ret;
ret = ad7266_read_single(st, val, chan->address);
iio_device_release_direct_mode(indio_dev);
*val = (*val >> 2) & 0xfff;
if (chan->scan_type.sign == 's')