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iio: adc: ad7476: 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 12:18:06 -07:00 committed by Jonathan Cameron
parent c70df20e31
commit a52f238e7c
1 changed files with 5 additions and 6 deletions
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9
drivers/iio/adc/ad7476.c
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@ -106,12 +106,11 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
switch (m) { switch (m) {
case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_RAW:
mutex_lock(&indio_dev->mlock); ret = iio_device_claim_direct_mode(indio_dev);
if (iio_buffer_enabled(indio_dev)) if (ret)
ret = -EBUSY; return ret;
else
ret = ad7476_scan_direct(st); ret = ad7476_scan_direct(st);
mutex_unlock(&indio_dev->mlock); iio_device_release_direct_mode(indio_dev);
if (ret < 0) if (ret < 0)
return ret; return ret;