virtio: ignore corrupted virtqueues rather than spinning.

[linux-2.6-omap-h63xx.git] / drivers / virtio / virtio_ring.c

diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c
index c2fa5c6308133e5bd9c4e4c39e4a6c0b9b8b7c4b..937a49d6772cc5271d22ef48cb14df6bf56c07f7 100644 (file)
--- a/drivers/virtio/virtio_ring.c
+++ b/drivers/virtio/virtio_ring.c
@@ -184,6 +184,11 @@ static void *vring_get_buf(struct virtqueue *_vq, unsigned int *len)
 
        START_USE(vq);
 
+       if (unlikely(vq->broken)) {
+               END_USE(vq);
+               return NULL;
+       }
+
        if (!more_used(vq)) {
                pr_debug("No more buffers in queue\n");
                END_USE(vq);