From f13d8bc2a16c5d1dd3dbd8b64dbd42cfe78da93e Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Tue, 9 Dec 2014 14:46:44 +0200 Subject: [PATCH] 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 Acked-by: Cornelia Huck --- drivers/s390/kvm/virtio_ccw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm/virtio_ccw.c index f9f87ba013c9..f92b9e66c200 100644 --- a/drivers/s390/kvm/virtio_ccw.c +++ b/drivers/s390/kvm/virtio_ccw.c @@ -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");