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iio: adc: ad7887: use iio helper function to guarantee direct mode 

Replace the code that guarantees the device stays in direct mode
with iio_device_claim_direct_mode() which does same.

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 12:18:43 -07:00 committed by Jonathan Cameron
parent a52f238e7c
commit 6fea8a426b
1 changed files with 5 additions and 6 deletions
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11
drivers/iio/adc/ad7887.c
View File

@ -156,12 +156,11 @@ static int ad7887_read_raw(struct iio_dev *indio_dev,
switch (m) {
case IIO_CHAN_INFO_RAW:
mutex_lock(&indio_dev->mlock);
if (iio_buffer_enabled(indio_dev))
ret = -EBUSY;
else
ret = ad7887_scan_direct(st, chan->address);
mutex_unlock(&indio_dev->mlock);
ret = iio_device_claim_direct_mode(indio_dev);
if (ret)
return ret;
ret = ad7887_scan_direct(st, chan->address);
iio_device_release_direct_mode(indio_dev);
if (ret < 0)
return ret;