Brad Hards wrote:
>
> Nicolas Mailhot wrote:
> >
> > Hi,
> >
> > Is something done about this ?
> >
> > * AMD-756 [Viper] USB has a serious erratum when
> > used with
> > * lowspeed devices like mice; oopses have been
> > seen. The
> > * vendor workaround needs an NDA ... for now,
> > blacklist it.
> >
> > I have one of these beasts, I'm not using it for lowspeed
> > devices but to make the dpcm driver oops on smartmedia, so
> > this is a damn nuisance.
> >
> > Why blacklist all devices when only lowspped ones are
> > concerned ?
> There was a recent discussion on the linux-kernel mailing list
> concerning this issue. See Miles Lane's originating email at
> http://www.uwsg.indiana.edu/hypermail/linux/kernel/0104.0/0400.html
> and follow the thread. It will likely be fixed soon, courtesy
> someone who knows someone in AMD.
>
> I agree that blacklisting is undesirable, but it is the only case
> that makes sense (given constraints of broken hardware, init
> time decision making, hot-plugable oopses and limited developer
> time).
>
> There is a patch in the thread that may help you with particular
> testing.
I have been informed by tech support at AMD that they'll
send me the workaround information on Wednesday or soon
after. The representative asked me to forward the
information to LKML as well as David Brownell, who
maintains the usb-ohci driver.
Cheers,
Miles
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