virtio_rng: use simplified virtqueue accessors.

We never add buffers with input and output parts, so use the new accessors.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Asias He <asias@redhat.com>

diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 10fd71c..842e2d5 100644 (file)
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -47,7 +47,7 @@ static void register_buffer(u8 *buf, size_t size)
        sg_init_one(&sg, buf, size);
 
        /* There should always be room for one buffer. */
-       if (virtqueue_add_buf(vq, &sg, 0, 1, buf, GFP_KERNEL) < 0)
+       if (virtqueue_add_inbuf(vq, &sg, 1, buf, GFP_KERNEL) < 0)
                BUG();
 
        virtqueue_kick(vq);