Merge tag 'h8300-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...

[deliverable/linux.git] / drivers / virtio / virtio_balloon.c

diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 0098810df69da6bb795b85a573ca28d7bd5a7609..1f572c00a1bec2f13e68861e6dda971e6fef5d40 100644 (file)
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -192,7 +192,8 @@ static void leak_balloon(struct virtio_balloon *vb, size_t num)
         * virtio_has_feature(vdev, VIRTIO_BALLOON_F_MUST_TELL_HOST);
         * is true, we *have* to do it in this order
         */
-       tell_host(vb, vb->deflate_vq);
+       if (vb->num_pfns != 0)
+               tell_host(vb, vb->deflate_vq);
        mutex_unlock(&vb->balloon_lock);
        release_pages_by_pfn(vb->pfns, vb->num_pfns);
 }