From: Meelis Roos <mroos@linux.ee>
To: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org
Subject: Re: i865, drm_modeset_lock_all: BUG: unable to handle kernel NULL pointer dereference at 00000104
Date: Tue, 23 Aug 2016 14:46:15 +0300 (EEST) [thread overview]
Message-ID: <alpine.LRH.2.20.1608231445550.17020@math.ut.ee> (raw)
In-Reply-To: <20160823101054.GG20834@nuc-i3427.alporthouse.com>
> > > Looks like an incorrect call to drm_encoder_cleanup() from the error
> > > path. If we hit the error path we have never called drm_encoder_init.
> > > Please try:
> > >
> > > diff --git a/drivers/gpu/drm/i915/intel_dvo.c b/drivers/gpu/drm/i915/intel_dvo.c
> > > index 47bdf9dad0d3..b9e5a63a7c9e 100644
> > > --- a/drivers/gpu/drm/i915/intel_dvo.c
> > > +++ b/drivers/gpu/drm/i915/intel_dvo.c
> > > @@ -554,7 +554,6 @@ void intel_dvo_init(struct drm_device *dev)
> > > return;
> > > }
> > >
> > > - drm_encoder_cleanup(&intel_encoder->base);
> > > kfree(intel_dvo);
> > > kfree(intel_connector);
> > > }
> >
> > It works - the BUG is gone.
> >
> > Now I get just
> > [drm:__intel_set_cpu_fifo_underrun_reporting [i915]] *ERROR* pipe A underrun
>
> Other than the annoying underrun, is everything else as expected? i.e.
> no connected outputs? Have we lost dvo detection?
Yes, as expected - there is no monitor connected.
--
Meelis Roos (mroos@linux.ee)
prev parent reply other threads:[~2016-08-23 10:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-08-23 9:58 Meelis Roos
2016-08-23 9:11 ` Chris Wilson
2016-08-23 11:35 ` Meelis Roos
2016-08-23 10:10 ` Chris Wilson
2016-08-23 11:46 ` Meelis Roos [this message]
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