On 02/22/2012 12:30 PM, michael.hennerich@xxxxxxxxxx wrote:
> From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
>
> Drivers may not need setup_ops at all, so let the core supply
> some empty ops.
Makes sense.
>
> Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
Acked-by: Jonathan Cameron <jic23@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;
--
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