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Diffstat (limited to 'hw/usb/dev-hub.c')
-rw-r--r--hw/usb/dev-hub.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/hw/usb/dev-hub.c b/hw/usb/dev-hub.c
index 0482f58719..c8c6855505 100644
--- a/hw/usb/dev-hub.c
+++ b/hw/usb/dev-hub.c
@@ -41,6 +41,9 @@ typedef struct USBHubState {
     USBHubPort ports[NUM_PORTS];
 } USBHubState;
 
+#define TYPE_USB_HUB "usb-hub"
+#define USB_HUB(obj) OBJECT_CHECK(USBHubState, (obj), TYPE_USB_HUB)
+
 #define ClearHubFeature		(0x2000 | USB_REQ_CLEAR_FEATURE)
 #define ClearPortFeature	(0x2300 | USB_REQ_CLEAR_FEATURE)
 #define GetHubDescriptor	(0xa000 | USB_REQ_GET_DESCRIPTOR)
@@ -227,7 +230,7 @@ static void usb_hub_complete(USBPort *port, USBPacket *packet)
 
 static USBDevice *usb_hub_find_device(USBDevice *dev, uint8_t addr)
 {
-    USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
+    USBHubState *s = USB_HUB(dev);
     USBHubPort *port;
     USBDevice *downstream;
     int i;
@@ -247,7 +250,7 @@ static USBDevice *usb_hub_find_device(USBDevice *dev, uint8_t addr)
 
 static void usb_hub_handle_reset(USBDevice *dev)
 {
-    USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
+    USBHubState *s = USB_HUB(dev);
     USBHubPort *port;
     int i;
 
@@ -513,7 +516,7 @@ static USBPortOps usb_hub_port_ops = {
 
 static void usb_hub_realize(USBDevice *dev, Error **errp)
 {
-    USBHubState *s = DO_UPCAST(USBHubState, dev, dev);
+    USBHubState *s = USB_HUB(dev);
     USBHubPort *port;
     int i;
 
@@ -577,7 +580,7 @@ static void usb_hub_class_initfn(ObjectClass *klass, void *data)
 }
 
 static const TypeInfo hub_info = {
-    .name          = "usb-hub",
+    .name          = TYPE_USB_HUB,
     .parent        = TYPE_USB_DEVICE,
     .instance_size = sizeof(USBHubState),
     .class_init    = usb_hub_class_initfn,