> When I bring up OHCI with an empty USB, the root hub registers were
> the only ones that looked interesting:
> 
>     ALI -- POTPGT=1
> 
>     NEC -- POTPGT=255, OCPM, PPCM=fffe
> 
> Hard to say if that's related to the problem later.  (Clearing OCPM
> didn't change the failure.)  The settings all seem to relate to power
> management.

Just in case it's unclear -- those are the chip register fields that
were _different_ not the entire set of fields!  Both had NPS and so on;
I didn't show other values since, being the same, they weren't obvious
candidates for having caused strangeness.

FWIW, applying the recent patches from Roman and Alan didn't change
anything -- the UE still shows up and prevents anything from working.

- Dave

p.s. Shouldn't the OHCI driver notice a UE and do something useful?
    Like reject all subsequent operations with some errno?  When
    a UE shows up, no further USB operations can ever succeed.  A
    reset can be done, though it should be done after the problem
    is corrected -- in this case I'd predict the problem would come
    right back again.





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