linux-kernel - Re: [drm/i915/3.17] panic in i915_digport_work

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Date:	Wed, 3 Sep 2014 10:08:52 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Daniel Vetter <daniel@...ll.ch>
cc:	Dave Airlie <airlied@...il.com>,
	Mike Galbraith <umgwanakikbuti@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Jani Nikula <jani.nikula@...ux.intel.com>,
	intel-gfx <intel-gfx@...ts.freedesktop.org>,
	Dave Airlie <airlied@...hat.com>
Subject: Re: [drm/i915/3.17] panic in i915_digport_work_func

On Mon, 1 Sep 2014, Daniel Vetter wrote:

> > From d407c946fbf5c48f30160591f5bd71fbe158aeb4 Mon Sep 17 00:00:00 2001
> > From: Dave Airlie <airlied@...hat.com>
> > Date: Mon, 1 Sep 2014 16:58:12 +1000
> > Subject: [PATCH] drm/i915: handle G45/GM45 pulse detection connected state.
> > 
> > In the HPD pulse handler we check for long pulses if the port is actually
> > connected, however we do that for IBX, but we use the pulse handling code on
> > GM45 systems as well, so we need to use a diffent check.
> > 
> > This patch refactors the digital port connected check out of the g4x detection
> > path and reuses it in the hpd pulse path.
> > 
> > Should fix:
> > Message-ID: <1409382202.5141.36.camel@...ge.simpson.net>
> > 
> > Reported-by: Mike Galbraith <umgwanakikbuti@...il.com>
> > Signed-off-by: Dave Airlie <airlied@...hat.com>
> 
> Reviewed-by: Daniel Vetter <daniel.vetter@...ll.ch>

I was just about to start bisecting, as my thinkpad x200s with Gen4 chip
wouldn't ocassionally boot with -rc3, but this patch seems to be the cure
for me as well.

FWIW

        Tested-by: Jiri Kosina <jkosina@...e.cz>

-- 
Jiri Kosina
SUSE Labs

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