On Tue, 2024-06-18 at 18:08 +0200, Olivier Moysan wrote:
> Add iio_backend_disable() and iio_backend_enable() APIs to allow
> IIO backend consumer to request backend disabling and enabling.
>
> Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxxxxxxx>
> ---
Hi Olivier,
small notes from me...
> drivers/iio/industrialio-backend.c | 26 ++++++++++++++++++++++++++
> include/linux/iio/backend.h | 2 ++
> 2 files changed, 28 insertions(+)
>
> diff --git a/drivers/iio/industrialio-backend.c b/drivers/iio/industrialio-
> backend.c
> index b950e30018ca..d3db048c086b 100644
> --- a/drivers/iio/industrialio-backend.c
> +++ b/drivers/iio/industrialio-backend.c
> @@ -166,6 +166,32 @@ int devm_iio_backend_enable(struct device *dev, struct
> iio_backend *back)
> }
> EXPORT_SYMBOL_NS_GPL(devm_iio_backend_enable, IIO_BACKEND);
>
> +/**
> + * iio_backend_enable - Backend enable
> + * @dev: Consumer device for the backend
> + * @back: Backend device
> + *
> + * RETURNS:
> + * 0 on success, negative error number on failure.
> + */
> +int iio_backend_enable(struct device *dev, struct iio_backend *back)
> +{
> + return iio_backend_op_call(back, enable);
> +}
> +EXPORT_SYMBOL_NS_GPL(iio_backend_enable, IIO_BACKEND);
We do already have devm_iio_backend_enable(). From a correctness stand point and even
scalability, that API should now call your new iio_backend_enable() instead of
directly call iio_backend_op_call(). I guess that change could be in this patch.
> +
> +/**
> + * iio_backend_disable - Backend disable
> + * @dev: Consumer device for the backend
> + * @back: Backend device
> + *
> + */
> +void iio_backend_disable(struct device *dev, struct iio_backend *back)
> +{
> + iio_backend_void_op_call(back, disable);
> +}
> +EXPORT_SYMBOL_NS_GPL(iio_backend_disable, IIO_BACKEND);
> +
We also have __iio_backend_disable() which is static since all users were using
devm_iio_backend_enable(). I understand that's not suitable for you but I would
instead rename the existing function to iio_backend_disable() and export it.
With the above changes:
Reviewed-by: Nuno Sa <nuno.sa@xxxxxxxxxx>
- Nuno Sá
