linux-kernel - Re: [REGRESSION] omapdrm/N900 display broken

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Date:   Fri, 27 Nov 2020 13:45:22 +0200
From:   Tomi Valkeinen <tomi.valkeinen@...com>
To:     Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>,
        Aaro Koskinen <aaro.koskinen@....fi>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        ML dri-devel <dri-devel@...ts.freedesktop.org>
CC:     Tony Lindgren <tony@...mide.com>, <linux-omap@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] omapdrm/N900 display broken

On 27/11/2020 01:17, Ivaylo Dimitrov wrote:
> Hi Tomi,
> 
> On 26.11.20 г. 16:11 ч., Tomi Valkeinen wrote:
>> Hi Aaro, Ivaylo,
>>
>> On 24/11/2020 23:03, Ivaylo Dimitrov wrote:
>>
>>> Is there any progress on the issue? I tried 5.9.1 and still nothing displayed.
>>
>> Can you test the attached patch?
>>
> 
> With this patch I don't see oops that Aaro reported, so:
> 
> Tested-by: Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>
> 
> Seems to fix the particular issue, however, now we get another oops. As this is not upstream kernel
> but one with PVR related patches, I will try again with vanilla 5.9.
> 
> Just in case oops rings any bells (the line in question is
> https://github.com/maemo-leste/droid4-linux/blob/maemo-5.9/drivers/gpu/drm/omapdrm/omap_gem.c#L801)

Do the PVR patches touch omapdrm? The call stack looks like normal boot time probing stuff, not
something happening later (possibly from PVR).

 Tomi

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