diff options
| -rw-r--r-- | drivers/s390/kvm/virtio_ccw.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index 789275f..f9f87ba 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -758,6 +758,13 @@ static int virtio_ccw_finalize_features(struct virtio_device *vdev) struct virtio_feature_desc *features; struct ccw1 *ccw; + if (vcdev->revision == 1 && + !__virtio_test_bit(vdev, VIRTIO_F_VERSION_1)) { + dev_err(&vdev->dev, "virtio: device uses revision 1 " + "but does not have VIRTIO_F_VERSION_1\n"); + return -EINVAL; + } + ccw = kzalloc(sizeof(*ccw), GFP_DMA | GFP_KERNEL); if (!ccw) return 0; |
