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Message-ID: <1477991271.2230.40.camel@tiscali.nl>
Subject: Re: [PATCH] drm/i915: Fix cdclk vs. dev_cdclk mess when not
 recomputing things
From: Paul Bolle <pebolle@tiscali.nl>
To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        ville.syrjala@linux.intel.com, intel-gfx@lists.freedesktop.org
Cc: Mika Kahola <mika.kahola@intel.com>, bruno.pagani@ens-lyon.org,
        Daniel J Blueman <daniel.blueman@gmail.com>,
        Joseph Yasi <joe.yasi@gmail.com>, stable@vger.kernel.org
Date: Tue, 01 Nov 2016 10:07:51 +0100
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On Tue, 2016-11-01 at 09:57 +0100, Maarten Lankhorst wrote:
> Otherwise looks sane, I have a similar patch in my tree. I didn't
> submit it yet but the fix was similar. Except for the
> dev_cdclk stuff.
> 
> With the last dev_cdclk assignment removed:
> 
> Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

So I've been running this patch for a few days now. First I tested it
on top of v4.8.4. Now I'm running it on top of v4.8.5.

My current v4.8.5 boot saw this new (for me) *ERROR*, twice:
    <3>[43483.521341] [drm:skl_set_cdclk [i915]] *ERROR* failed to inform PCU about cdclk change
    <3>[108639.090776] [drm:skl_set_cdclk [i915]] *ERROR* failed to inform PCU about cdclk change

Related or a coincidence?

Thanks,


Paul Bolle