CardBus USB 2.0 Controller (NEC uPD)
Bernd Walter
ticso at cicely12.cicely.de
Wed Jun 11 17:23:56 PDT 2003
On Wed, Jun 11, 2003 at 11:08:42PM +0000, Craig Boston wrote:
> On Wed, 2003-06-11 at 19:37, Bernd Walter wrote:
> > There are known problems with USB2.0 cardbus cards.
> > We have some kind of resource problem - Warner already wrote something
> > about it some time ago.
>
> Ah, thanks. Any hints on where to find it? I tried adding his name to
> my archive/google searches but keep coming up with many unrelated
> posts... :-/
Search in current and cvs-all lists for ehci and maybe cardbus.
There was a thread shortly after the ehci driver was commited.
> About all I've managed to do so far is to verify that it doesn't appear
> to be an interrupt routing problem. The driver is indeed receiving
> interrupts. However the status register only says that it's a root hub
> status change, never to advise that a transfer is complete :-( Polling
> mode doesn't seem to help as it queries the same register...
>
> It also sometimes interrupts with intrs==0 right after a transfer
> starts, which sounds bogus to me. I'm in single-user mode and positive
> that nothing else on irq 11 is interrupting.
>
> Oh well, for now I'm content to just keep hacking on it and learn more
> about how the code works :)
Good luck :)
--
B.Walter BWCT http://www.bwct.de
ticso at bwct.de info at bwct.de
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