Re: usb : mass storage : short_not_ok for non usb3 udc

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On Wed, 25 Jul 2012, Rajaram R wrote:

> On Wed, Jul 25, 2012 at 10:51 PM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote:
> > On Wed, 25 Jul 2012, Rajaram R wrote:
> >
> >> >> > There's one thing I don't get.  The message talks about musb but the code
> >> >> > checks for non Super Speed devices.  So maybe the code is correct, maybe
> >> >> > it's not, but the message does not really explain it (at least to me).
> >> >> >
> >> >> Please let me know if this thread sets the context ?
> >> >>
> >> >> http://www.spinics.net/lists/linux-usb/msg64938.html
> >> >
> >> > I don't understand this either.  What's wrong with setting short_not_ok
> >> > while at SuperSpeed?  It shouldn't force the use of a bounce buffer.
> >> >
> >>
> >> I have just brought back some code removed by patch "usb: fix mass
> >> storage gadgets to work with Synopsys UDC".
> >
> > Maybe while bringing it back you can remove the checks for SuperSpeed.
> > Is there any reason to keep them?
> 
> Looks like it is required for DWC.

Please explain why it is required for DWC.  I don't understand.

Alan Stern

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