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Re: octeon: oops/panic with CONFIG_SERIO_I8042=y

To: David Daney <>
Subject: Re: octeon: oops/panic with CONFIG_SERIO_I8042=y
From: Aaro Koskinen <>
Date: Thu, 18 Jul 2013 21:03:39 +0300
Cc: Faidon Liambotis <>,
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On Thu, Jul 18, 2013 at 09:28:54AM -0700, David Daney wrote:
> On 07/18/2013 05:25 AM, Faidon Liambotis wrote:
> >My goal is to run a standard Debian kernel and its octeon variant[1] on
> >the Ubiquity EdgeRouter Lite. The ERLite needs a couple of patches
> >to boot and work (octeon-ethernet patch, octeon-usb driver) but these
> >are already merged 3.11 and I'll file Debian bugs to enable those
> >settings appropriately.
> >
> >1: e.g.
> >
> >However, when trying to boot a standard Debian kernel in the ERLite I
> >get a 7s delay followed by an oops for a Data bus error on i8042_flush()
> >and ending up with a panic. It looks like the kernel is built with
> >CONFIG_SERIO_I8042=y.  The Octeon machine Debian owns prints "i8042: No
> >controller found" but works nevertheless.  This isn't the case with the
> >ERLite; I tried 3.2 & 3.10 and got the same oops which went away as soon
> >as I disabled CONFIG_SERIO_I8042.
> >
> >Are there even any octeon machines with i8042 anyway? Should I request
> >for the setting to be disabled irrespective of this bug?
> Yes.  There is a rare board called NAC38 that was produced by ASUS
> in a 1U chassis.  I don't think it is important to support this, so
> the best thing seems to be not to enable SERIO_I8042

I think the real bug here is that IO space does not get properly
initialized on Octeon when there is no PCI? So any drivers trying to
probe IO space will produce some interesting results.


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