[RFC PATCH 1/4] USB: HCD: support giveback of URB in tasklet context

[Oliver Neukum]

On Sunday 09 June 2013 23:18:28 Ming Lei wrote:
> 2), the biggest change is the situation in which usb_submit_urb() is called
> in complete() callback, so the introduced tasklet schedule delay might be a
> con, but it shouldn't be a big deal:
> 
>         - control/bulk asynchronous transfer isn't sensitive to schedule
>           delay

That is debatable.Missing a frame boundary is expensive because the increased
latency then translates into lower throughput.

	Regards
		Oliver