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virtio-ccw: using VIRTIO_NO_VECTOR instead of 0 for invalid virtqueue 

It's a bad idea to need to use vector 0 for invalid virtqueue. So this patch
changes to using VIRTIO_NO_VECTOR instead.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
CC: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Alexander Graf <agraf@suse.de>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jason Wang 2015-04-23 14:21:40 +08:00 committed by Michael S. Tsirkin
parent bcfa4d6014
commit 955cc8c954
1 changed files with 1 additions and 1 deletions
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2
hw/s390x/virtio-ccw.c
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@ -281,7 +281,7 @@ static int virtio_ccw_set_vqs(SubchDev *sch, uint64_t addr, uint32_t align,
virtio_queue_set_addr(vdev, index, addr);
if (!addr) {
virtio_queue_set_vector(vdev, index, 0);
virtio_queue_set_vector(vdev, index, VIRTIO_NO_VECTOR);
} else {
/* Fail if we don't have a big enough queue. */
/* TODO: Add interface to handle vring.num changing */