The device (not the driver) populates the used ring and includes the len
of how much data was written.
Signed-off-by: Felipe Franciosi <[email protected]>
---
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.
--
1.9.4
On 2016年11月14日 22:16, Felipe Franciosi wrote:
> The device (not the driver) populates the used ring and includes the len
> of how much data was written.
>
> Signed-off-by: Felipe Franciosi <[email protected]>
> ---
> 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.
Reviewed-by: Jason Wang <[email protected]>