Re: [RFC] pass sg lists to HCDs if supported

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On Mon, 2 Feb 2009, Oliver Neukum wrote:

> Am Monday 02 February 2009 20:49:24 schrieb Alan Stern:
> > Ah, but you're forgetting the possibile cases in which the controller
> > doesn't support DMA.  That is an independent question from whether the 
> > HCD supports scatterlists.
> 
> How? If you don't do DMA, you'll need to do PIO and the CPU can
> certainly do scatter/gather.

Of course.  But I'm talking about whether the HCD can handle URBs that
contain a scatterlist.  At the moment, none of them can.

Alan Stern

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