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[PULL,11/28] virtio-ccw: using VIRTIO_NO_VECTOR instead of 0 for invalid virtqueue

Message ID 1431329108-2605-12-git-send-email-mst@redhat.com
State New
Headers show

Commit Message

Michael S. Tsirkin May 11, 2015, 12:47 p.m. UTC 
From: Jason Wang <jasowang@redhat.com>

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>
---
 hw/s390x/virtio-ccw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c
index d32ecaf..0434f56 100644
--- a/hw/s390x/virtio-ccw.c
+++ b/hw/s390x/virtio-ccw.c
@@ -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 */