chardev: mark explicitly first argument as poisoned

Since commit 9894dc0cdcc397ee5b26370bc53da6d360a363c2 "char: convert
from GIOChannel to QIOChannel", the first argument to the watch callback
can actually be a QIOChannel, which is not a GIOChannel (but a QEMU
Object).

Even though we never used that pointer, change the callback type to warn
the users. Possibly a better fix later, we may want to store the
callback and call it from intermediary functions.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/net/vhost-user.c b/net/vhost-user.c
index ffbd94d944..6adfcd623a 100644
--- a/net/vhost-user.c
+++ b/net/vhost-user.c
@@ -208,8 +208,8 @@ static NetClientInfo net_vhost_user_info = {
         .set_vnet_le = vhost_user_set_vnet_endianness,
 };
 
-static gboolean net_vhost_user_watch(GIOChannel *chan, GIOCondition cond,
-                                           void *opaque)
+static gboolean net_vhost_user_watch(void *do_not_use, GIOCondition cond,
+                                     void *opaque)
 {
     NetVhostUserState *s = opaque;