Driver was checking for direct mode but not locking it. Use
claim/release helper functions to guarantee the device stays
in direct mode during raw reads.
Signed-off-by: Alison Schofield <amsfield22@xxxxxxxxx>
---
drivers/iio/accel/mma8452.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 6e82e02..cbbc746 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -459,12 +459,14 @@ static int mma8452_read_raw(struct iio_dev *indio_dev,
switch (mask) {
case IIO_CHAN_INFO_RAW:
- if (iio_buffer_enabled(indio_dev))
- return -EBUSY;
+ ret = iio_device_claim_direct_mode(indio_dev);
+ if (ret)
+ return ret;
mutex_lock(&data->lock);
ret = mma8452_read(data, buffer);
mutex_unlock(&data->lock);
+ iio_device_release_direct_mode(indio_dev);
if (ret < 0)
return ret;
--
2.1.4
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