On Saturday 28 August 2004 12:33 pm, Darren Marshall wrote:
> On Sat, Aug 28, 2004 at 11:58:00AM -0700, David Brownell wrote:
> > On Saturday 28 August 2004 11:40 am, Darren Marshall wrote:
> > > David Brownell wrote:
> > > 
> > 
> > > >
> > > >This suggests a chip bug to me; there were others in
> > > >AMD-756 OHCI.  Does it work if you disable CONFIG_PM?
> > > >
> > > >
> > > Disabling CONFIG_PM improved things slightly, I can now do 4 or 5 "cats" 
> > > before a hang occurs.
> > 
> > Looks like there is inded a chip-related bug in that suspend/resume logic
> > then.  But that's not the only thing going on, since when you turned off
> > all the related logic, you got another failure:

Hmm, erratum 10 seems the closest match to this, but it's not
quite right:  things were broken really early, before any kind of
wakeup; and the chip never tried to wake up the OS.

Can you post "lspci -vvx" info for all functions on your south bridge?
(Run as root.)


> > OK, so if it's not working in that case, then there's some other bug.
> > As the "async" file empty at this point?
> > 
> > 
> > > homer # cat /sys/class/usb_host/usb1/registers
> > > bus pci, device 0000:00:07.4
> > >...
> > > donehead 1730e180
> > 
> > This value suggests a lost IRQ ... the donelist should
> > be flushed at most every 6 msec.

Actually that's "lost" in the "never issued" sense ...
the HC lost it, not the driver.

> Yes, the "async" file is still empty.

Huh, puzzling.  I'll have to look at the bk1/bk2 delta to see if
something suggests itself as a reason to hit an undocumted
erratum on that old chip.  (Is your board "Slot A" or "Socket A"?)

- Dave


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