[Qemu-devel] Re: PATCH: QEMU support for UHCI suspend / remote wake up

[Gerd Hoffmann]

  Hi,

> +        dev->info->remote_wakeup_cb = uhci_event;

> diff --git a/hw/usb.h b/hw/usb.h
> index 00d2802..16de1c9 100644
> --- a/hw/usb.h
> +++ b/hw/usb.h
> @@ -189,6 +189,11 @@ struct USBDeviceInfo {
>        */
>       int (*handle_data)(USBDevice *dev, USBPacket *p);
>
> +    /*
> +     * Process remote wakeup request.
> +     */
> +    void (*remote_wakeup_cb)(USBDevice *dev);
> +

No way.  DeviceInfo holds informations about the device 
*implementation*.  Multiple instances will share that, placing runtime 
data there is just plain wrong.

Also this is a callback from the usb device to the usb host adapter, not 
the other way around.  I'd suggest to create a USBBusOps for host 
adapter callbacks and and stick it into USBBus.

cheers,
  Gerd