On 11/15/12 16:40, Jan Kiszka wrote: > Hi Hans, > > On 2012-11-15 16:19, Hans de Goede wrote: >> Hi Jan, >> >> I just saw your $subject patch in Gerd's usb-next tree, and I've a question >> about it. The token should be enough to uniquely identify a device + ep, >> and unless a guest uses multiple qhs for a singe ep, that _should_ be enough. > > But what disallows that the guest issues multiple requests (QH + series > of TDs) for a single endpoint? I'm not finding any trace in the spec > that disallows this. And my special guest is stumbling over that > limitation in QEMU.
The order which the TDs from the two QHs are filled is undefined I think, so why a guest would do that? I guess I'll push back the patch in the queue and don't include it into the 1.3 pull req until this is sorted. cheers, Gerd
