[Qemu-devel] [PATCH 08/10] qdev: rename qdev_unplug to qdev_unplug_req

[Liu Ping Fan <qemulist@gmail.com>]

From: Liu Ping Fan <pingfank@linux.vnet.ibm.com>

Unplug divides into two steps: request and complete
The name "req" show more clearly about its meaning
and as to the complete, it is qdev_delete_subtree()

Also adding ret to indicate the request can be eject or not

Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
---
 hw/pci-hotplug.c     |    4 ++--
 hw/qdev-monitor.c    |    2 +-
 hw/qdev.c            |    7 ++++---
 hw/qdev.h            |    2 +-
 hw/scsi-bus.c        |    4 ++--
 hw/usb/dev-storage.c |    2 +-
 hw/xen_platform.c    |    2 +-
 7 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/hw/pci-hotplug.c b/hw/pci-hotplug.c
index e7fb780..6faff33 100644
--- a/hw/pci-hotplug.c
+++ b/hw/pci-hotplug.c
@@ -192,7 +192,7 @@ static PCIDevice *qemu_pci_hot_add_storage(Monitor *mon,
             dev = NULL;
         if (dev && dinfo) {
             if (scsi_hot_add(mon, &dev->qdev, dinfo, 0) != 0) {
-                qdev_unplug(&dev->qdev, NULL);
+                qdev_unplug_req(&dev->qdev, NULL);
                 dev = NULL;
             }
         }
@@ -271,7 +271,7 @@ static int pci_device_hot_remove(Monitor *mon, const char *pci_addr)
         return -1;
     }
 
-    qdev_unplug(&d->qdev, &local_err);
+    qdev_unplug_req(&d->qdev, &local_err);
     if (error_is_set(&local_err)) {
         monitor_printf(mon, "%s\n", error_get_pretty(local_err));
         error_free(local_err);
diff --git a/hw/qdev-monitor.c b/hw/qdev-monitor.c
index 018b386..fdd9539 100644
--- a/hw/qdev-monitor.c
+++ b/hw/qdev-monitor.c
@@ -606,7 +606,7 @@ void qmp_device_del(const char *id, Error **errp)
         return;
     }
 
-    qdev_unplug(dev, errp);
+    qdev_unplug_req(dev, errp);
 }
 
 void qdev_machine_init(void)
diff --git a/hw/qdev.c b/hw/qdev.c
index d6c8130..e2339a1 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -194,13 +194,13 @@ void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
     dev->alias_required_for_version = required_for_version;
 }
 
-void qdev_unplug(DeviceState *dev, Error **errp)
+int qdev_unplug_req(DeviceState *dev, Error **errp)
 {
     DeviceClass *dc = DEVICE_GET_CLASS(dev);
 
     if (!dev->parent_bus->allow_hotplug) {
         error_set(errp, QERR_BUS_NO_HOTPLUG, dev->parent_bus->name);
-        return;
+        return -1;
     }
     assert(dc->unplug != NULL);
 
@@ -208,8 +208,9 @@ void qdev_unplug(DeviceState *dev, Error **errp)
 
     if (dc->unplug(dev) < 0) {
         error_set(errp, QERR_UNDEFINED_ERROR);
-        return;
+        return -1;
     }
+    return 0;
 }
 
 static int qdev_reset_one(DeviceState *dev, void *opaque)
diff --git a/hw/qdev.h b/hw/qdev.h
index 6f97990..182cfa5 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -160,7 +160,7 @@ int qdev_init(DeviceState *dev) QEMU_WARN_UNUSED_RESULT;
 void qdev_init_nofail(DeviceState *dev);
 void qdev_set_legacy_instance_id(DeviceState *dev, int alias_id,
                                  int required_for_version);
-void qdev_unplug(DeviceState *dev, Error **errp);
+int qdev_unplug_req(DeviceState *dev, Error **errp);
 void qdev_free(DeviceState *dev);
 void qdev_delete_subtree(DeviceState *dev);
 int qdev_simple_unplug_cb(DeviceState *dev);
diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index 4981a02..023211a 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -1802,7 +1802,7 @@ static int get_scsi_requests(QEMUFile *f, void *pv, size_t size)
     return 0;
 }
 
-static int scsi_qdev_unplug(DeviceState *qdev)
+static int scsi_qdev_unplug_req(DeviceState *qdev)
 {
     SCSIDevice *dev = SCSI_DEVICE(qdev);
     SCSIBus *bus = DO_UPCAST(SCSIBus, qbus, dev->qdev.parent_bus);
@@ -1849,7 +1849,7 @@ static void scsi_device_class_init(ObjectClass *klass, void *data)
     DeviceClass *k = DEVICE_CLASS(klass);
     k->bus_type = TYPE_SCSI_BUS;
     k->init     = scsi_qdev_init;
-    k->unplug   = scsi_qdev_unplug;
+    k->unplug   = scsi_qdev_unplug_req;
     k->exit     = scsi_qdev_exit;
     k->props    = scsi_props;
 }
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index ff48d91..8871b2b 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -510,7 +510,7 @@ static void usb_msd_password_cb(void *opaque, int err)
         err = usb_device_attach(&s->dev);
 
     if (err)
-        qdev_unplug(&s->dev.qdev, NULL);
+        qdev_unplug_req(&s->dev.qdev, NULL);
 }
 
 static void *usb_msd_load_request(QEMUFile *f, SCSIRequest *req)
diff --git a/hw/xen_platform.c b/hw/xen_platform.c
index c1fe984..0231a40 100644
--- a/hw/xen_platform.c
+++ b/hw/xen_platform.c
@@ -103,7 +103,7 @@ static void unplug_disks(PCIBus *b, PCIDevice *d, void *o)
 {
     if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
             PCI_CLASS_STORAGE_IDE) {
-        qdev_unplug(&(d->qdev), NULL);
+        qdev_unplug_req(&(d->qdev), NULL);
     }
 }
 
-- 
1.7.4.4