QEMU currently shows some unexpected behavior when the user trys to
do a "device_add digic" on an unrelated ARM machine like integratorcp
in "-nographic" mode (the device_add command does not immediately
return to the monitor prompt), and trying to "device_del" the device
later results in a "qemu/qdev-monitor.c:872:qdev_unplug: assertion
failed: (hotplug_ctrl)" error condition.
Looking at the realize function of the device, it uses serial_hds
directly and this means that the device can not be added a second
time, so let's simply mark it with "user_creatable = false" now.
Signed-off-by: Thomas Huth <th...@redhat.com>
---
v2: Updated the comment and the patch description
hw/arm/digic.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/hw/arm/digic.c b/hw/arm/digic.c
index 94f3263..6184020 100644
--- a/hw/arm/digic.c
+++ b/hw/arm/digic.c
@@ -101,6 +101,8 @@ static void digic_class_init(ObjectClass *oc, void *data)
DeviceClass *dc = DEVICE_CLASS(oc);
dc->realize = digic_realize;
+ /* Reason: Uses serial_hds in the realize function --> not usable twice */
+ dc->user_creatable = false;
}
static const TypeInfo digic_type_info = {
--
1.8.3.1
