info qdm: do not require a parent_bus to be set

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 7 insertions, 5 deletions

diff --git a/hw/qdev-monitor.c b/hw/qdev-monitor.c
index a6f0e16397..56a34587b8 100644
--- a/hw/qdev-monitor.c
+++ b/hw/qdev-monitor.c
@@ -163,12 +163,14 @@ int qdev_device_help(QemuOpts *opts)
         error_printf("%s.%s=%s\n", driver, prop->name,
                      prop->info->legacy_name ?: prop->info->name);
     }
-    for (prop = info->bus_info->props; prop && prop->name; prop++) {
-        if (!prop->info->parse) {
-            continue;           /* no way to set it, don't show */
+    if (info->bus_info) {
+        for (prop = info->bus_info->props; prop && prop->name; prop++) {
+            if (!prop->info->parse) {
+                continue;           /* no way to set it, don't show */
+            }
+            error_printf("%s.%s=%s\n", driver, prop->name,
+                         prop->info->legacy_name ?: prop->info->name);
         }
-        error_printf("%s.%s=%s\n", driver, prop->name,
-                     prop->info->legacy_name ?: prop->info->name);
     }
     return 1;
 }