iio: adc: ad7298: 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>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

1 files changed, 10 insertions, 10 deletions

diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
index 10ec8fce395f..e399bf04c73a 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;