On 18/07/16 20:34, Alison Schofield wrote:
> 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@xxxxxxxxx>
> Cc: Daniel Baluta <daniel.baluta@xxxxxxxxx>
Applied to the togreg branch of iio.git - initially pushed
out as testing.
If Lars or Michael has a chance to look at these as well,
I can easily enough pull them or add Acks etc for now.
Jonathan
> ---
> drivers/iio/adc/ad7298.c | 20 ++++++++++----------
> 1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
> index 10ec8fc..e399bf0 100644
> --- a/drivers/iio/adc/ad7298.c
> +++ b/drivers/iio/adc/ad7298.c
> @@ -239,16 +239,16 @@ static int ad7298_read_raw(struct iio_dev *indio_dev,
>
> switch (m) {
> case IIO_CHAN_INFO_RAW:
> - mutex_lock(&indio_dev->mlock);
> - if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
> - ret = -EBUSY;
> - } else {
> - if (chan->address == AD7298_CH_TEMP)
> - ret = ad7298_scan_temp(st, val);
> - else
> - ret = ad7298_scan_direct(st, chan->address);
> - }
> - mutex_unlock(&indio_dev->mlock);
> + ret = iio_device_claim_direct_mode(indio_dev);
> + if (ret)
> + return ret;
> +
> + if (chan->address == AD7298_CH_TEMP)
> + ret = ad7298_scan_temp(st, val);
> + else
> + ret = ad7298_scan_direct(st, chan->address);
> +
> + iio_device_release_direct_mode(indio_dev);
>
> if (ret < 0)
> return ret;
>
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