The device (not the driver) populates the used ring and includes the len
of how much data was written.

Signed-off-by: Felipe Franciosi <redacted>
---
  drivers/virtio/virtio_ring.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 489bfc6..8a0d6a9 100644
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c

@@ -649,7 +649,7 @@ static inline bool more_used(const struct vring_virtqueue *vq)
   * @vq: the struct virtqueue we're talking about.
   * @len: the length written into the buffer
   *
- * If the driver wrote data into the buffer, @len will be set to the
+ * If the device wrote data into the buffer, @len will be set to the
   * amount written.  This means you don't need to clear the buffer
   * beforehand to ensure there's no data leakage in the case of short
   * writes.