qdev: device_del: Search for to be unplugged device in 'peripheral' c…

…ontainer

device_add puts every device with 'id' inside of 'peripheral'
container using id's value as the last component name.
Use it by replacing recursive search on sysbus with path
lookup in 'peripheral' container, which could handle both
BUS and BUS-less device cases.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

qdev-monitor.c

@@ -686,15 +686,20 @@ int do_device_add(Monitor *mon, const QDict *qdict, QObject **ret_data)
 
 void qmp_device_del(const char *id, Error **errp)
 {
-    DeviceState *dev;
+    Object *obj;
+    char *root_path = object_get_canonical_path(qdev_get_peripheral());
+    char *path = g_strdup_printf("%s/%s", root_path, id);
 
-    dev = qdev_find_recursive(sysbus_get_default(), id);
-    if (!dev) {
+    g_free(root_path);
+    obj = object_resolve_path_type(path, TYPE_DEVICE, NULL);
+    g_free(path);
+
+    if (!obj) {
         error_set(errp, QERR_DEVICE_NOT_FOUND, id);
         return;
     }
 
-    qdev_unplug(dev, errp);
+    qdev_unplug(DEVICE(obj), errp);
 }
 
 void qdev_machine_init(void)