qdev: hotplug: drop HotplugHandler.post_plug callback

as nvdimm acpi is okay to build fit when the nvdimm device
has not been 'realized'

Suggested-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>

hw/acpi/nvdimm.c

@@ -38,11 +38,7 @@ static int nvdimm_plugged_device_list(Object *obj, void *opaque)
     GSList **list = opaque;
 
     if (object_dynamic_cast(obj, TYPE_NVDIMM)) {
-        DeviceState *dev = DEVICE(obj);
+        *list = g_slist_append(*list, DEVICE(obj));
-
-        if (dev->realized) { /* only realized NVDIMMs matter */
-            *list = g_slist_append(*list, DEVICE(obj));
-        }
     }
 
     object_child_foreach(obj, nvdimm_plugged_device_list, opaque);

hw/core/hotplug.c

@@ -35,17 +35,6 @@ void hotplug_handler_plug(HotplugHandler *plug_handler,
     }
 }
 
-void hotplug_handler_post_plug(HotplugHandler *plug_handler,
-                               DeviceState *plugged_dev,
-                               Error **errp)
-{
-    HotplugHandlerClass *hdc = HOTPLUG_HANDLER_GET_CLASS(plug_handler);
-
-    if (hdc->post_plug) {
-        hdc->post_plug(plug_handler, plugged_dev, errp);
-    }
-}
-
 void hotplug_handler_unplug_request(HotplugHandler *plug_handler,
                                     DeviceState *plugged_dev,
                                     Error **errp)

hw/core/qdev.c

@@ -945,21 +945,10 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
                 goto child_realize_fail;
             }
         }
-
         if (dev->hotplugged) {
             device_reset(dev);
         }
         dev->pending_deleted_event = false;
-        dev->realized = value;
-
-        if (hotplug_ctrl) {
-            hotplug_handler_post_plug(hotplug_ctrl, dev, &local_err);
-        }
-
-        if (local_err != NULL) {
-            dev->realized = value;
-            goto post_realize_fail;
-        }
     } else if (!value && dev->realized) {
         Error **local_errp = NULL;
         QLIST_FOREACH(bus, &dev->child_bus, sibling) {
@@ -976,14 +965,13 @@ static void device_set_realized(Object *obj, bool value, Error **errp)
         }
         dev->pending_deleted_event = true;
         DEVICE_LISTENER_CALL(unrealize, Reverse, dev);
-
-        if (local_err != NULL) {
-            goto fail;
-        }
-
-        dev->realized = value;
     }
 
+    if (local_err != NULL) {
+        goto fail;
+    }
+
+    dev->realized = value;
     return;
 
 child_realize_fail:

hw/i386/pc.c

@@ -1715,22 +1715,16 @@ static void pc_dimm_plug(HotplugHandler *hotplug_dev,
         goto out;
     }
 
+    if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
+        nvdimm_acpi_hotplug(&pcms->acpi_nvdimm_state);
+    }
+
     hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev);
     hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &error_abort);
 out:
     error_propagate(errp, local_err);
 }
 
-static void pc_dimm_post_plug(HotplugHandler *hotplug_dev,
-                              DeviceState *dev, Error **errp)
-{
-    PCMachineState *pcms = PC_MACHINE(hotplug_dev);
-
-    if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
-        nvdimm_acpi_hotplug(&pcms->acpi_nvdimm_state);
-    }
-}
-
 static void pc_dimm_unplug_request(HotplugHandler *hotplug_dev,
                                    DeviceState *dev, Error **errp)
 {
@@ -2008,14 +2002,6 @@ static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
     }
 }
 
-static void pc_machine_device_post_plug_cb(HotplugHandler *hotplug_dev,
-                                           DeviceState *dev, Error **errp)
-{
-    if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
-        pc_dimm_post_plug(hotplug_dev, dev, errp);
-    }
-}
-
 static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
                                                 DeviceState *dev, Error **errp)
 {
@@ -2322,7 +2308,6 @@ static void pc_machine_class_init(ObjectClass *oc, void *data)
     mc->reset = pc_machine_reset;
     hc->pre_plug = pc_machine_device_pre_plug_cb;
     hc->plug = pc_machine_device_plug_cb;
-    hc->post_plug = pc_machine_device_post_plug_cb;
     hc->unplug_request = pc_machine_device_unplug_request_cb;
     hc->unplug = pc_machine_device_unplug_cb;
     nc->nmi_monitor_handler = x86_nmi;

include/hw/hotplug.h

@@ -47,7 +47,6 @@ typedef void (*hotplug_fn)(HotplugHandler *plug_handler,
  * @parent: Opaque parent interface.
  * @pre_plug: pre plug callback called at start of device.realize(true)
  * @plug: plug callback called at end of device.realize(true).
- * @post_pug: post plug callback called after device is successfully plugged.
  * @unplug_request: unplug request callback.
  *                  Used as a means to initiate device unplug for devices that
  *                  require asynchronous unplug handling.
@@ -62,7 +61,6 @@ typedef struct HotplugHandlerClass {
     /* <public> */
     hotplug_fn pre_plug;
     hotplug_fn plug;
-    hotplug_fn post_plug;
     hotplug_fn unplug_request;
     hotplug_fn unplug;
 } HotplugHandlerClass;
@@ -85,15 +83,6 @@ void hotplug_handler_pre_plug(HotplugHandler *plug_handler,
                               DeviceState *plugged_dev,
                               Error **errp);
 
-/**
- * hotplug_handler_post_plug:
- *
- * Call #HotplugHandlerClass.post_plug callback of @plug_handler.
- */
-void hotplug_handler_post_plug(HotplugHandler *plug_handler,
-                               DeviceState *plugged_dev,
-                               Error **errp);
-
 /**
  * hotplug_handler_unplug_request:
  *