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SubjectRe: Oops in UHCI when encountering "host controller process error"
Alan Stern wrote:
> The entry point is uhci_urb_enqueue(). You can do whatever you like
> there, but bear in mind that it may be called in interrupt context.
> uhci_sprint_schedule() should be fine.
>
> However I don't really see the point. If the DMA pool allocations are
> so badly messed up that the initial setup is wrong, why bother to
> search any further?

I was trying to use it as a way of gauging where the damage was coming from.

But its moot now; Ian Campbell tracked it down to a missing TLB flush
which explained all the weird non-deterministic symptoms we were
seeing. It all looks pretty good now.

J



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