[PATCH v2 2/4] usb/uhci: Disallow user creating a vt82c686-uhci-pci device

[BALATON Zoltan]

Because this device only works as part of VIA superio chips set user
creatable to false. Since the class init method is common for UHCI
variants introduce a flag in UHCIInfo for this.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
---
 hw/usb/hcd-uhci.c          | 3 +++
 hw/usb/hcd-uhci.h          | 1 +
 hw/usb/vt82c686-uhci-pci.c | 2 ++
 3 files changed, 6 insertions(+)

diff --git a/hw/usb/hcd-uhci.c b/hw/usb/hcd-uhci.c
index c557566ec2..7d26e35194 100644
--- a/hw/usb/hcd-uhci.c
+++ b/hw/usb/hcd-uhci.c
@@ -1282,6 +1282,9 @@ void uhci_data_class_init(ObjectClass *klass, void *data)
     } else {
         device_class_set_props(dc, uhci_properties_standalone);
     }
+    if (info->notuser) {
+        dc->user_creatable = false;
+    }
     u->info = *info;
 }
 
diff --git a/hw/usb/hcd-uhci.h b/hw/usb/hcd-uhci.h
index e61d8fcb19..316693f80b 100644
--- a/hw/usb/hcd-uhci.h
+++ b/hw/usb/hcd-uhci.h
@@ -85,6 +85,7 @@ typedef struct UHCIInfo {
     uint8_t    irq_pin;
     void       (*realize)(PCIDevice *dev, Error **errp);
     bool       unplug;
+    bool       notuser; /* disallow user_creatable */
 } UHCIInfo;
 
 void uhci_data_class_init(ObjectClass *klass, void *data);
diff --git a/hw/usb/vt82c686-uhci-pci.c b/hw/usb/vt82c686-uhci-pci.c
index b109c21603..ea262e6d70 100644
--- a/hw/usb/vt82c686-uhci-pci.c
+++ b/hw/usb/vt82c686-uhci-pci.c
@@ -25,6 +25,8 @@ static UHCIInfo uhci_info[] = {
         .irq_pin   = 3,
         .realize   = usb_uhci_vt82c686b_realize,
         .unplug    = true,
+        /* Reason: only works as USB function of VT82xx superio chips */
+        .notuser   = true,
     }
 };
 
-- 
2.21.4