[Qemu-devel] [PATCH 5/5] pci: Validate interfaces on base_class_init

[Eduardo Habkost <ehabkost@redhat.com>]

Make sure we don't forget to add the legacy-PCI or PCIe interface
names on PCI device classes in the future.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 hw/pci/pci.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index baa3429..7ac5cc6 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -2525,6 +2525,17 @@ static void pci_device_class_init(ObjectClass *klass, void *data)
     pc->realize = pci_default_realize;
 }
 
+static void pci_device_class_base_init(ObjectClass *klass, void *data)
+{
+    if (!object_class_is_abstract(klass)) {
+        ObjectClass *legacy =
+            object_class_dynamic_cast(klass, INTERFACE_LEGACY_PCI_DEVICE);
+        ObjectClass *pcie =
+            object_class_dynamic_cast(klass, INTERFACE_PCIE_DEVICE);
+        assert(legacy || pcie);
+    }
+}
+
 AddressSpace *pci_device_iommu_address_space(PCIDevice *dev)
 {
     PCIBus *bus = PCI_BUS(dev->bus);
@@ -2649,6 +2660,7 @@ static const TypeInfo pci_device_type_info = {
     .abstract = true,
     .class_size = sizeof(PCIDeviceClass),
     .class_init = pci_device_class_init,
+    .class_base_init = pci_device_class_base_init,
 };
 
 static void pci_register_types(void)
-- 
2.9.4