1 files changed, 5 insertions, 0 deletions
diff --git a/async.c b/async.c
index 293a52a0a7..a99e7f639a 100644
--- a/async.c
+++ b/async.c
@@ -188,6 +188,11 @@ aio_ctx_prepare(GSource *source, gint    *timeout)
 
     /* We assume there is no timeout already supplied */
     *timeout = qemu_timeout_ns_to_ms(aio_compute_timeout(ctx));
+
+    if (aio_prepare(ctx)) {
+        *timeout = 0;
+    }
+
     return *timeout == 0;
 }