virtio_test: verify if virtqueue_kick() succeeded

Verify if a host kick succeeded by checking return value of virtqueue_kick().

Signed-off-by: Heinz Graalfs <graalfs@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

diff --git a/tools/virtio/virtio_test.c b/tools/virtio/virtio_test.c
index 059cb72..bdb71a2 100644 (file)
--- a/tools/virtio/virtio_test.c
+++ b/tools/virtio/virtio_test.c
@@ -172,7 +172,8 @@ static void run_test(struct vdev_info *dev, struct vq_info *vq,
                                                         GFP_ATOMIC);
                                if (likely(r == 0)) {
                                        ++started;
-                                       virtqueue_kick(vq->vq);
+                                       if (unlikely(!virtqueue_kick(vq->vq))
+                                               r = -1;
                                }
                        } else
                                r = -1;