On Mon, 3 Dec 2001, Greg KH wrote:
> On Sun, Dec 02, 2001 at 12:38:08PM +0100, Oliver Neukum wrote:
> >
> > Here I don't understand you. Certainly an URB pool could be used. But why
> > would it prevent needing to wait. IMHO it would just mean waiting for a pool
> > of URBs to finish instead of waiting for a single URB.
>
> Why wait? If there are no urbs available, return saying you didn't
> write all of the data. The caller should be able to handle this, and it
> simplifies the driver logic.
Simply returning AFAIK violates the standard.
We would end up waiting for free URBs.
And implementing an URB pool without races is not that simple.
Regards
Oliver
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