[PATCH] xhci: fix nec-usb-xhci properties

[PATCH] xhci: fix nec-usb-xhci properties

[Gerd Hoffmann]

Storing properties directly in XHCIPciState.xhci doesn't work,
the object_initialize_child() call in xhci_instance_init() will
overwrite them.

This changes the defaults for some properties, which in turn breaks
live migration and possibly other things as well.

So add XHCINecState, store properties there, copy them over on
instance init.

Fixes: 8ddab8dd3d81 ("usb/hcd-xhci: Split pci wrapper for xhci base model")
Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb/hcd-xhci-nec.c | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/hw/usb/hcd-xhci-nec.c b/hw/usb/hcd-xhci-nec.c
index 5707b2cabd16..13a125afe2f7 100644
--- a/hw/usb/hcd-xhci-nec.c
+++ b/hw/usb/hcd-xhci-nec.c
@@ -27,18 +27,37 @@
 
 #include "hcd-xhci-pci.h"
 
+typedef struct XHCINecState {
+    /*< private >*/
+    XHCIPciState parent_obj;
+    /*< public >*/
+    uint32_t flags;
+    uint32_t intrs;
+    uint32_t slots;
+} XHCINecState;
+
 static Property nec_xhci_properties[] = {
     DEFINE_PROP_ON_OFF_AUTO("msi", XHCIPciState, msi, ON_OFF_AUTO_AUTO),
     DEFINE_PROP_ON_OFF_AUTO("msix", XHCIPciState, msix, ON_OFF_AUTO_AUTO),
-    DEFINE_PROP_BIT("superspeed-ports-first", XHCIPciState,
-                    xhci.flags, XHCI_FLAG_SS_FIRST, true),
-    DEFINE_PROP_BIT("force-pcie-endcap", XHCIPciState, xhci.flags,
+    DEFINE_PROP_BIT("superspeed-ports-first", XHCINecState, flags,
+                    XHCI_FLAG_SS_FIRST, true),
+    DEFINE_PROP_BIT("force-pcie-endcap", XHCINecState, flags,
                     XHCI_FLAG_FORCE_PCIE_ENDCAP, false),
-    DEFINE_PROP_UINT32("intrs", XHCIPciState, xhci.numintrs, XHCI_MAXINTRS),
-    DEFINE_PROP_UINT32("slots", XHCIPciState, xhci.numslots, XHCI_MAXSLOTS),
+    DEFINE_PROP_UINT32("intrs", XHCINecState, intrs, XHCI_MAXINTRS),
+    DEFINE_PROP_UINT32("slots", XHCINecState, slots, XHCI_MAXSLOTS),
     DEFINE_PROP_END_OF_LIST(),
 };
 
+static void nec_xhci_instance_init(Object *obj)
+{
+    XHCIPciState *pci = XHCI_PCI(obj);
+    XHCINecState *nec = container_of(pci, XHCINecState, parent_obj);
+
+    pci->xhci.flags    = nec->flags;
+    pci->xhci.numintrs = nec->intrs;
+    pci->xhci.numslots = nec->slots;
+}
+
 static void nec_xhci_class_init(ObjectClass *klass, void *data)
 {
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
@@ -53,6 +72,8 @@ static void nec_xhci_class_init(ObjectClass *klass, void *data)
 static const TypeInfo nec_xhci_info = {
     .name          = TYPE_NEC_XHCI,
     .parent        = TYPE_XHCI_PCI,
+    .instance_size = sizeof(XHCINecState),
+    .instance_init = nec_xhci_instance_init,
     .class_init    = nec_xhci_class_init,
 };
 
-- 
2.27.0