Re: [linux-usb-devel] Re: 2.6.15-mm3 [USB lost interrupt bug]

Reuben Farrelly
2006-01-21T05:21:49Z

On 16/01/2006 4:46 p.m., Alan Stern wrote:
> On Mon, 16 Jan 2006, Reuben Farrelly wrote:
>
>>> From the information presented here, it looks like -mm1 correctly routes
>>> the 1d.1 controller to IRQ 193 and the 1d.3 controller to IRQ 169, whereas
>>> -mm3 incorrectly routes the 1d.3 controller to IRQ 193. That would make
>>> it an ACPI problem.
>> Is this likely to be the same or similar issue to the IRQ 0 problem I see quite
>> frequently on the SATA ports on later -mm releases?
>> (see http://www.ussg.iu.edu/hypermail/linux/kernel/0601.1/1851.html)
>
> I doubt they are at all related. In the USB problem the resource is there
> but ACPI is routing it wrongly. In the SATA problem the resource isn't
> there to begin with.
>
> But then I know almost nothing about ACPI, so I could be wrong...
>
> Alan Stern

Some good news. I think it's fixed in 2.6.16-rc1-mm2. In fact a whole boatload
of problems I was having are fixed in this -mm release, including a nasty libata
oops that seemed to have a few people scratching their heads.

I've now done in excess of 20 reboots with this code and haven't had either
problem show up at all.

So for now I'll keep a record of things for a bit longer, but I guess I've
reason to be fairly confident that both this USB/IRQ problem and my ATA/IRQ
problem are now fixed.

It does make me wonder if the ACPI update in rc1-mm2 fixed it, and was actually
the cause of most of my problems......it would be nice to know for sure.

Thanks,
Reuben