diff options
Diffstat (limited to 'drivers/virtio')
| -rw-r--r-- | drivers/virtio/virtio_ring.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index f9f772e85a38..bb3d73d221cd 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -2266,6 +2266,23 @@ int virtqueue_add_inbuf_ctx(struct virtqueue *vq, EXPORT_SYMBOL_GPL(virtqueue_add_inbuf_ctx); /** + * virtqueue_dma_dev - get the dma dev + * @_vq: the struct virtqueue we're talking about. + * + * Returns the dma dev. That can been used for dma api. + */ +struct device *virtqueue_dma_dev(struct virtqueue *_vq) +{ + struct vring_virtqueue *vq = to_vvq(_vq); + + if (vq->use_dma_api) + return vring_dma_dev(vq); + else + return NULL; +} +EXPORT_SYMBOL_GPL(virtqueue_dma_dev); + +/** * virtqueue_kick_prepare - first half of split virtqueue_kick call. * @_vq: the struct virtqueue * |