1 files changed, 25 insertions, 1 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 0e5f29d348..954fd1a747 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -790,6 +790,26 @@ out:
     return ret;
 }
 
+static bool spapr_hotplugged_dev_before_cas(void)
+{
+    Object *drc_container, *obj;
+    ObjectProperty *prop;
+    ObjectPropertyIterator iter;
+
+    drc_container = container_get(object_get_root(), "/dr-connector");
+    object_property_iter_init(&iter, drc_container);
+    while ((prop = object_property_iter_next(&iter))) {
+        if (!strstart(prop->type, "link<", NULL)) {
+            continue;
+        }
+        obj = object_property_get_link(drc_container, prop->name, NULL);
+        if (spapr_drc_needed(obj)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 int spapr_h_cas_compose_response(sPAPRMachineState *spapr,
                                  target_ulong addr, target_ulong size,
                                  sPAPROptionVector *ov5_updates)
@@ -797,9 +817,13 @@ int spapr_h_cas_compose_response(sPAPRMachineState *spapr,
     void *fdt, *fdt_skel;
     sPAPRDeviceTreeUpdateHeader hdr = { .version_id = 1 };
 
+    if (spapr_hotplugged_dev_before_cas()) {
+        return 1;
+    }
+
     size -= sizeof(hdr);
 
-    /* Create sceleton */
+    /* Create skeleton */
     fdt_skel = g_malloc0(size);
     _FDT((fdt_create(fdt_skel, size)));
     _FDT((fdt_begin_node(fdt_skel, "")));