Re: [PATCH 2/3] usb: dwc2: host: Giveback URB in tasklet context

[Alan Stern]

On Fri, 6 Nov 2015, Doug Anderson wrote:

> You're talking to someone who has only been looking at the details of
> USB for about 2 days now.  :-P  ...I'm trying to grok all of that, but
> I'm not sure I got it all...
> 
> I will say that "URB_ISO_ASAP" is not referenced anywhere in dwc2.
> Presumably that's a bug (or missing feature).  Would it be terrible if
> I just ignored that for now and said that if you try to add something
> to the queue and we're currently in the process of waiting for our
> timer to expire then you'll just get back -ENOSPC?  dwc2 won't deal
> perfectly well if you've very close to exhausting the available
> bandwidth, but that could be a task for another day.

Sure.  It's not necessary to support everything perfectly, right from
the beginning.

Alan Stern

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