vdpa: fix gcc cvq_isolated uninitialized variable warning

gcc 13.2.1 emits the following warning:

  net/vhost-vdpa.c: In function ‘net_vhost_vdpa_init.constprop’:
  net/vhost-vdpa.c:1394:25: error: ‘cvq_isolated’ may be used uninitialized [-Werror=maybe-uninitialized]
   1394 |         s->cvq_isolated = cvq_isolated;
        |         ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~
  net/vhost-vdpa.c:1355:9: note: ‘cvq_isolated’ was declared here
   1355 |     int cvq_isolated;
        |         ^~~~~~~~~~~~
  cc1: all warnings being treated as errors

Cc: Eugenio Pérez <eperezma@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230911215435.4156314-1-stefanha@redhat.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index 5808d1b60c61b68e75ee3e25dc76774ba660e2cb..94635fcbeeadb9ee9b7cc3c4d500ee2214209cbd 100644 (file)
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -1425,7 +1425,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
     VhostVDPAState *s;
     int ret = 0;
     assert(name);
-    int cvq_isolated;
+    int cvq_isolated = 0;
 
     if (is_datapath) {
         nc = qemu_new_net_client(&net_vhost_vdpa_info, peer, device,