[Qemu-devel] [PATCH v1 4/4] s390x/zpci: properly fail if the zPCI device cannot be created

[David Hildenbrand <david@redhat.com>]

Right now, errors during realize()/pre_plug/plug of the zPCI device
would result in QEMU crashing instead of failing nicely when creating
a zPCI device for a PCI device.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 hw/s390x/s390-pci-bus.c | 25 +++++++++++++++++++------
 1 file changed, 19 insertions(+), 6 deletions(-)

diff --git a/hw/s390x/s390-pci-bus.c b/hw/s390x/s390-pci-bus.c
index 1849f9d334..4939490c7c 100644
--- a/hw/s390x/s390-pci-bus.c
+++ b/hw/s390x/s390-pci-bus.c
@@ -778,17 +778,31 @@ static void s390_pci_msix_free(S390PCIBusDevice *pbdev)
 }
 
 static S390PCIBusDevice *s390_pci_device_new(S390pciState *s,
-                                             const char *target)
+                                             const char *target, Error **errp)
 {
-    DeviceState *dev = NULL;
+    Error *local_err = NULL;
+    DeviceState *dev;
 
     dev = qdev_try_create(BUS(s->bus), TYPE_S390_PCI_DEVICE);
     if (!dev) {
+        error_setg(errp, "zPCI device could not be created");
         return NULL;
     }
 
-    qdev_prop_set_string(dev, "target", target);
-    qdev_init_nofail(dev);
+    object_property_set_str(OBJECT(dev), "target", target, &local_err);
+    if (local_err) {
+        object_unparent(OBJECT(dev));
+        error_propagate_prepend(errp, local_err,
+                                "zPCI device could not be created: ");
+        return NULL;
+    }
+    object_property_set_bool(OBJECT(dev), true, "realized", &local_err);
+    if (local_err) {
+        object_unparent(OBJECT(dev));
+        error_propagate_prepend(errp, local_err,
+                                "zPCI device could not be created: ");
+        return NULL;
+    }
 
     return S390_PCI_DEVICE(dev);
 }
@@ -873,9 +887,8 @@ static void s390_pcihost_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
 
         pbdev = s390_pci_find_dev_by_target(s, dev->id);
         if (!pbdev) {
-            pbdev = s390_pci_device_new(s, dev->id);
+            pbdev = s390_pci_device_new(s, dev->id, errp);
             if (!pbdev) {
-                error_setg(errp, "create zpci device failed");
                 return;
             }
         }
-- 
2.17.2