[Qemu-devel] [PATCH 01/88] qdev: Use NULL instead of local_err for qbus_child unrealize

[Michael Roth]

From: Gonglei <arei.gong...@huawei.com>

Forcefully unrealize all children regardless of errors in earlier
iterations (if any). We should keep going with cleanup operation
rather than report an error immediately. Therefore store the first
child unrealization failure and propagate it at the end. We also
forcefully unregister vmsd and unrealize actual object, too.

Signed-off-by: Gonglei <arei.gong...@huawei.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
Cc: qemu-sta...@nongnu.org
Signed-off-by: Andreas Färber <afaer...@suse.de>
(cherry picked from commit cd4520adcab70dbac8db3fe4d41836dca63715a4)
Signed-off-by: Michael Roth <mdr...@linux.vnet.ibm.com>
---
 hw/core/qdev.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index da1ba48..1a88865 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -871,18 +871,18 @@ static void device_set_realized(Object *obj, bool value, 
Error **errp)
         }
         dev->pending_deleted_event = false;
     } else if (!value && dev->realized) {
+        Error **local_errp = NULL;
         QLIST_FOREACH(bus, &dev->child_bus, sibling) {
+            local_errp = local_err ? NULL : &local_err;
             object_property_set_bool(OBJECT(bus), false, "realized",
-                                     &local_err);
-            if (local_err != NULL) {
-                break;
-            }
+                                     local_errp);
         }
-        if (qdev_get_vmsd(dev) && local_err == NULL) {
+        if (qdev_get_vmsd(dev)) {
             vmstate_unregister(dev, qdev_get_vmsd(dev), dev);
         }
-        if (dc->unrealize && local_err == NULL) {
-            dc->unrealize(dev, &local_err);
+        if (dc->unrealize) {
+            local_errp = local_err ? NULL : &local_err;
+            dc->unrealize(dev, local_errp);
         }
         dev->pending_deleted_event = true;
     }
-- 
1.9.1