>> Just so I understand...is it really desired that userspace doesn't >> have the flexibility to choose which USB device is offloaded? I know >> it complicates what needs to be done, but it could be just an >> additional feature that can be added later on. Again, by default, we >> select the last USB headset plugged in to be enabled for offload by >> default. > > If it chooses endpoint by itself perhaps you can send patch set without > controls first? This has added benefit of less patches in series, making > it easier to review and it won't block whole patch set by discussion on > controls feature. Controls can be added in followup series. We do need read-only controls for userspace to know that offload is possible and which card/device to use. That can be done in a first step assuming there's a single device plugged-in. Dealing with multiple devices and defining rules or configuration options to select the offloaded device is a second-level problem. In most cases the only thing that will be offloaded is a headset anyways, so the selection could be rather static based on a vendor/system ID, all other USB devices would be ignored.
