[PATCH v10 17/41] virtio_ring: packed: introduce vring_free_packed

[Xuan Zhuo]

Free the structure struct vring_vritqueue_packed.

Subsequent patches require it.

Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com>
---
 drivers/virtio/virtio_ring.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 1ba00e73d601..a72b929f51fb 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -1807,6 +1807,27 @@ static struct vring_desc_extra *vring_alloc_desc_extra(unsigned int num)
 	return desc_extra;
 }
 
+static void vring_free_packed(struct vring_virtqueue_packed *vring,
+			      struct virtio_device *vdev)
+{
+	if (vring->vring.desc)
+		vring_free_queue(vdev, vring->ring_size_in_bytes,
+				 vring->vring.desc, vring->ring_dma_addr);
+
+	if (vring->vring.driver)
+		vring_free_queue(vdev, vring->event_size_in_bytes,
+				 vring->vring.driver,
+				 vring->driver_event_dma_addr);
+
+	if (vring->vring.device)
+		vring_free_queue(vdev, vring->event_size_in_bytes,
+				 vring->vring.device,
+				 vring->device_event_dma_addr);
+
+	kfree(vring->desc_state);
+	kfree(vring->desc_extra);
+}
+
 static struct virtqueue *vring_create_virtqueue_packed(
 	unsigned int index,
 	unsigned int num,
-- 
2.31.0