Low umass performance with USB 2.0 ports

[Eygene A. Ryabinkin]

> >  Oops, it seems that this patch also does not work as expected: after some
> > time of playing with flash card and working with the system it started to
> > stall as unpatched system, but it freezes the system -- even IP stack was
> > frozen (I am using DEVICE_POLLING), so I were to remove the flash from the
> > port -- system was unfrozen and continued to work. So something is still
> > bad with the USB. I'll try to do some long testing with USB 1.1 -- maybe it
> > will show the same behaviour after some more time.
> 
> Do you mean my patch? 
 Yes. And I've noticed the second, worst, thing: my cd-burner refused to
burn anything using atapi-cam. I've not tested the native atapi (via burncd),
because it is broken (at least with many new drives). After recompiling the
clean 5.x kernel the problem gone. I don't have much time today to make
experiments, but I'll try to check this issue once again.
-- 
 rea