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virtio_ccw: future-proof finalize_features 

We never negotiate revision > 1, but just to
make this code more likely to work when we do,
require VERSION_1 with any revision >= 1.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Michael S. Tsirkin 2014-12-09 14:46:44 +02:00
parent 5f4c976089
commit f13d8bc2a1
1 changed files with 1 additions and 1 deletions
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2
drivers/s390/kvm/virtio_ccw.c
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@ -758,7 +758,7 @@ static int virtio_ccw_finalize_features(struct virtio_device *vdev)
struct virtio_feature_desc *features;
struct ccw1 *ccw;
if (vcdev->revision == 1 &&
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");