linux-kernel - Re: Kernel 2.6.30 and udevd problem

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Date:	Thu, 23 Jul 2009 02:06:36 +0200
From:	Alberto Gonzalez <alberto6674@...il.com>
To:	Alberto Gonzalez <alberto6674@...il.com>
Cc:	Jesse Barnes <jbarnes@...tuousgeek.org>,
	Michal Soltys <soltys@....info>,
	Dave Airlie <airlied@...ux.ie>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, linux-hotplug@...r.kernel.org
Subject: Re: Kernel 2.6.30 and udevd problem

On Wednesday 22 July 2009 22:00:21 Alberto Gonzalez wrote:
> On Wednesday 22 July 2009 21:44:36 Jesse Barnes wrote:
> > Hm, so this type of interrupt problem is *supposed* to be handled by
> > setting of the PEG_BAND_GAP_DATA reg (low bits set to 0xd).  Do you
> > have that in your tree?  Does git master have this problem?
>
> The problem started with 2.6.30 on a standard distro kernel (Arch Linux).
> Latest tests were with vanilla 2.6.30.1 and a cut down config (attached). I
> haven't tested .31.
>
> I'll try to test latest git as soon as I can and let you know if the
> problem exists there.

I've tested 2.6.31 from git and I can reproduce the problem. Attached is the 
dmesg with the debug patch applied.

>
> > Maybe we need to add a patch to 2.6.30.x to set PEG_BAND_GAP_DATA as a
> > workaround (git master already has code to do this properly for HDMI
> > and DP outputs afaict).


View attachment "dmesg-2.6.31.log" of type "text/x-log" (80058 bytes)