> Use virtio_get_config_size() rather than sizeof(struct
> virtio_snd_config) for the config_size in the vhost-user-snd frontend.
> The frontend shall rely on device features for the size of the device
> configuration space. The presence of `controls` in the config space
> depends on VIRTIO_SND_F_CTLS according to the specification (v1.3):
> `
> 5.14.4 Device Configuration Layout
> ...
> controls
> (driver-read-only) indicates a total number of all available control
> elements if VIRTIO_SND_F_CTLS has been negotiated.
> `
> This fixes an issue introduced by commit ab0c7fb2 ("linux-headers:
> update to current kvm/next") in which the optional field `controls` is
> added to the virtio_snd_config structure. This breaks vhost-user-device
> backends that do not implement the `controls` field.
> Fixes: ab0c7fb22b ("linux-headers: update to current kvm/next")
> Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2805
> Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org>
> Suggested-by: Stefano Garzarella <sgarz...@redhat.com>
> Signed-off-by: Matias Ezequiel Vara Larsen <mvara...@redhat.com>
> ---
> Changes in v2:
> - Addressed comments from Stefano Garzarella about commit msg and the
> property name.
> ---
> hw/virtio/vhost-user-snd.c | 18 +++++++++++++++++-
> 1 file changed, 17 insertions(+), 1 deletion(-)
Reviewed-by: Dorinda Bassey <dbas...@redhat.com>
