Hi!
I see from the drivers/usb/host/ehci-sched.c that those are not
supported. I also found a year-old post in this list by David Brownell
which states:
> It's essentially all coded, but microframe scheduling needs tweaks
> for the IN cases. I decided to force ENOMEM until that code is
> ready ... someone willing to play with the code could turn it on and
> shouldn't find it needs many changes.
What is the status of this stuff now? Has anyone done any work on this
and what exactly is the problem with current code?
I did try to turn it on for my USB soundcard (so it would work through a
USB 2.0 hub) and experienced a NULL pointer dereference plus some
spinlock errors. I haven't tried it without pre-emption yet. I am
willing to spend some time to tweak and test it if I'd know what exactly
needs tweaking ;)
--
Antti Andreimann - Security Expert
Using Linux since 1993
Member of ELUG since 29.01.2000
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