linux-kernel - Re: [Nouveau] [regression drm/noveau] suspend to ram -> BOOM: exception RIP: drm_calc_vbltimestamp_from

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Date:   Fri, 14 Jul 2017 11:20:01 -0400
From:   Ilia Mirkin <imirkin@...m.mit.edu>
To:     Tobias Klausmann <tobias.johannes.klausmann@....thm.de>
Cc:     Karol Herbst <karolherbst@...il.com>,
        Mike Galbraith <efault@....de>,
        Peter Zijlstra <peterz@...radead.org>,
        David Airlie <airlied@...ux.ie>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Ben Skeggs <bskeggs@...hat.com>
Subject: Re: [Nouveau] [regression drm/noveau] suspend to ram -> BOOM:
 exception RIP: drm_calc_vbltimestamp_from_scanoutpos+335

On Fri, Jul 14, 2017 at 11:19 AM, Tobias Klausmann
<tobias.johannes.klausmann@....thm.de> wrote:
> The conversion is a nice catch, but i'd like to have a bit more context, see
> below!
>
> With a better description:
>
> Tobias Klausmann <tobias.johannes.klausmann@....thm.de>

I don't think it was meant as a serious patch. WARN_ON_ONCE should
work. The fix isn't to remove all instances of WARN_ON_ONCE. The fix
is to fix WARN_ON_ONCE.