Re: [Qemu-devel] usb-musb: calls usb_packet_complete() on packets with no owner

[Gerd Hoffmann <kraxel@redhat.com>]

   Hi,

>      usb_packet_complete(s->port.dev,&ep->packey[dir].p);
>
> which will call usb_packet_complete() on packets which did not
> return USB_RET_ASYNC from usb_handle_packet, and so trips this
> assert.

> Any suggestions about what the right way to fix this is?
> (I'm a bit confused about the comment that usb_packet_complete
> is to 'notify the controller' -- usb-musb is the controller...)

The usual work flow is that the usb device (usb-msd.c does this for 
example) kicks the I/O, then returns USB_RET_ASYNC, and when the I/O is 
completed it calls usb_packet_complete().

In case of the musb controller this will call musb_schedule_cb() which 
is hooked into musb_port_ops->complete.  So simply calling 
musb_schedule_cb() directly for non-async packets should work I think.

cheers,
   Gerd