virtio_ring: fix typos in vring_desc_extra

We're actually tracking descriptor address and length instead of the
buffer.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20211019070152.8236-7-jasowang@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index 058b18f..6d2614e 100644 (file)
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -79,8 +79,8 @@ struct vring_desc_state_packed {
 };
 
 struct vring_desc_extra {
-       dma_addr_t addr;                /* Buffer DMA addr. */
-       u32 len;                        /* Buffer length. */
+       dma_addr_t addr;                /* Descriptor DMA addr. */
+       u32 len;                        /* Descriptor length. */
        u16 flags;                      /* Descriptor flags. */
        u16 next;                       /* The next desc state in a list. */
 };