[Qemu-devel] [PATCH 13/14] usb-bus: Don't detach non attached devices on device exit

[Hans de Goede]

This causes an "Error: tried to detach unattached usb device " to be printed,
this can happen when deleting ie a usb host qdev, which did not
get attached (because a device matching the filter never got plugged in).
---
 hw/usb-bus.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/hw/usb-bus.c b/hw/usb-bus.c
index bb040d2..0a49921 100644
--- a/hw/usb-bus.c
+++ b/hw/usb-bus.c
@@ -84,7 +84,9 @@ static int usb_qdev_exit(DeviceState *qdev)
     USBDevice *dev = DO_UPCAST(USBDevice, qdev, qdev);
     USBBus *bus = usb_bus_from_device(dev);
 
-    usb_device_detach(dev);
+    if (dev->attached) {
+        usb_device_detach(dev);
+    }
     bus->ops->device_destroy(bus, dev);
     if (dev->info->handle_destroy) {
         dev->info->handle_destroy(dev);
-- 
1.7.5.1