On 22 August 2017 at 15:30, Thomas Huth <thuth@redhat.com> wrote:
> 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 <thuth@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 = {
Applied to target-arm.next for 2.11, thanks.
-- PMM