1 files changed, 47 insertions, 0 deletions
diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index 98987a1973..28b517f5da 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -252,3 +252,50 @@ void usb_info(Monitor *mon)
     }
 }
 
+/* handle legacy -usbdevice cmd line option */
+USBDevice *usbdevice_create(const char *cmdline)
+{
+    USBBus *bus = usb_bus_find(-1 /* any */);
+    DeviceInfo *info;
+    USBDeviceInfo *usb;
+    char driver[32], *params;
+    int len;
+
+    params = strchr(cmdline,':');
+    if (params) {
+        params++;
+        len = params - cmdline;
+        if (len > sizeof(driver))
+            len = sizeof(driver);
+        pstrcpy(driver, len, cmdline);
+    } else {
+        pstrcpy(driver, sizeof(driver), cmdline);
+    }
+
+    for (info = device_info_list; info != NULL; info = info->next) {
+        if (info->bus_info != &usb_bus_info)
+            continue;
+        usb = DO_UPCAST(USBDeviceInfo, qdev, info);
+        if (usb->usbdevice_name == NULL)
+            continue;
+        if (strcmp(usb->usbdevice_name, driver) != 0)
+            continue;
+        break;
+    }
+    if (info == NULL) {
+#if 0
+        /* no error because some drivers are not converted (yet) */
+        qemu_error("usbdevice %s not found\n", driver);
+#endif
+        return NULL;
+    }
+
+    if (!usb->usbdevice_init) {
+        if (params) {
+            qemu_error("usbdevice %s accepts no params\n", driver);
+            return NULL;
+        }
+        return usb_create_simple(bus, usb->qdev.name);
+    }
+    return usb->usbdevice_init(params);
+}