QemuOpts: Drop qemu_opts_foreach() parameter abort_on_failure

When the argument is non-zero, qemu_opts_foreach() stops on callback
returning non-zero, and returns that value.

When the argument is zero, it doesn't stop, and returns the bit-wise
inclusive or of all the return values.  Funky :)

The callers that pass zero could just as well pass one, because their
callbacks can't return anything but zero:

* qemu_add_globals()'s callback qdev_add_one_global()

* qemu_config_write()'s callback config_write_opts()

* main()'s callbacks default_driver_check(), drive_enable_snapshot(),
  vnc_init_func()

Drop the parameter, and always stop.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>

2 files changed, 4 insertions, 3 deletions

diff --git a/net/net.c b/net/net.c
index db6be12a1e..011de593e9 100644
--- a/net/net.c
+++ b/net/net.c
@@ -1373,10 +1373,11 @@ int net_init_clients(void)
 
     QTAILQ_INIT(&net_clients);
 
-    if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL, 1) == -1)
+    if (qemu_opts_foreach(qemu_find_opts("netdev"), net_init_netdev, NULL)) {
         return -1;
+    }
 
-    if (qemu_opts_foreach(net, net_init_client, NULL, 1) == -1) {
+    if (qemu_opts_foreach(net, net_init_client, NULL)) {
         return -1;
     }
 
diff --git a/net/vhost-user.c b/net/vhost-user.c
index 8d2672846f..f1a15ceb61 100644
--- a/net/vhost-user.c
+++ b/net/vhost-user.c
@@ -245,7 +245,7 @@ int net_init_vhost_user(const NetClientOptions *opts, const char *name,
 
     /* verify net frontend */
     if (qemu_opts_foreach(qemu_find_opts("device"), net_vhost_check_net,
-                          (char *)name, true) == -1) {
+                          (char *)name)) {
         return -1;
     }