Although this change does not affect functionality at present, it is
required when we add support for user-creatable SMMUv3 devices in
future patches.

Tested-by: Nathan Chen <nath...@nvidia.com>
Signed-off-by: Shameer Kolothum <shameerali.kolothum.th...@huawei.com>
---
 hw/arm/smmu-common.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/arm/smmu-common.c b/hw/arm/smmu-common.c
index f39b99e526..7890aa12c1 100644
--- a/hw/arm/smmu-common.c
+++ b/hw/arm/smmu-common.c
@@ -20,6 +20,7 @@
 #include "trace.h"
 #include "exec/target_page.h"
 #include "hw/core/cpu.h"
+#include "hw/pci/pci_bridge.h"
 #include "hw/qdev-properties.h"
 #include "qapi/error.h"
 #include "qemu/jhash.h"
@@ -937,7 +938,8 @@ static void smmu_base_realize(DeviceState *dev, Error 
**errp)
                                      g_free, g_free);
     s->smmu_pcibus_by_busptr = g_hash_table_new(NULL, NULL);
 
-    if (s->primary_bus) {
+    if (s->primary_bus && object_dynamic_cast(OBJECT(s->primary_bus)->parent,
+                                              TYPE_PCI_HOST_BRIDGE)) {
         pci_setup_iommu(s->primary_bus, &smmu_ops, s);
     } else {
         error_setg(errp, "SMMU is not attached to any PCI bus!");
-- 
2.47.0


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