Re: [linux-usb-devel] [PATCH] Ohci-hcd: fix endless loop (second take)

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

On Mon, 2004-11-29 at 09:04 +0100, Colin Leroy wrote:
> On 27 Nov 2004 at 09h11, Benjamin Herrenschmidt wrote:
> 
> Hi, 
> 
> > > > It's probably a linux-wlan-ng issue... 
> > > 
> > > I suspect PPC resume issues myself.
> > 
> > Colin, you didn't tell us which controller it was ? The NEC one is a
> > totally normal off-the-shelves controller coming out of D3. The Apple
> > ones are a bit special tho.
> 
> It's the ibook G4's controller:
> [colin@jack ~]$ for i in 1 2 3 4; do cat /sys/bus/usb/devices/usb$i/product; done;
> NEC Corporation USB 2.0
> Apple Computer Inc. KeyLargo/Intrepid USB (#3)
> NEC Corporation USB
> NEC Corporation USB (#2)

Hrm... there is some problem in communication here. I asked you which
controller out of the 3 OHCIs you have in this machine is the culprit,
you give me a list of all of them but without PCI IDs ... From the
archive, I think it was USB bus #4 no ? not sure which of these
controllers it matches. 

The iBook G4 has actually 3 "Apple" OHCI's in KeyLargo/Intrepid but with
2 of them disabled by the firmware (not wired) plus one NEC USB2
controller (which contains 1 EHCI and 2 OHCIs) on the PCI bus. The code
managing their sleep process is very different.

Ben.