From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Drivers may not need setup_ops at all, so let the core supply
some empty ops.
Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
---
drivers/staging/iio/industrialio-core.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 82c9128..6fc1430 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -800,6 +800,8 @@ static const struct file_operations iio_buffer_fileops = {
.compat_ioctl = iio_ioctl,
};
+static const struct iio_buffer_setup_ops noop_ring_setup_ops;
+
int iio_device_register(struct iio_dev *indio_dev)
{
int ret;
@@ -828,6 +830,10 @@ int iio_device_register(struct iio_dev *indio_dev)
if (indio_dev->modes & INDIO_BUFFER_TRIGGERED)
iio_device_register_trigger_consumer(indio_dev);
+ if ((indio_dev->modes & INDIO_ALL_BUFFER_MODES) &&
+ indio_dev->setup_ops == NULL)
+ indio_dev->setup_ops = &noop_ring_setup_ops;
+
ret = device_add(&indio_dev->dev);
if (ret < 0)
goto error_unreg_eventset;
--
1.7.0.4
--
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