Re: [PATCH 096/143] USB: gadget: add USB Audio Gadget driver

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On Tuesday 16 June 2009, Laurent Pinchart wrote:
> > We don't need to let gadget device user space application do the
> > conversion.
> 
> I'm afraid that won't work. The host and device clocks are not synchronized, 
> so you'll experience buffer underruns or overruns.

Maybe someone is going to finally get into how to do synchronization
with ISO streams in Linux?  Read the USB spec, there are several
mechanisms.  I believe there are likely to be some missing lowlevel
primitives in the kernel-to-kernel interfaces, needed to make those
things work right.

Though I think you're talking about a different issue, a bit higher
up in the stack.  There might be missing features there too.  ;)
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