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Groups > linux.kernel > #1499485

Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)

From Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Newsgroups linux.kernel
Subject Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)
Date 2016-10-12 13:10 +0200
Message-ID <srpA6-3Ax-11@gated-at.bofh.it> (permalink)
References <sroum-2vS-13@gated-at.bofh.it>
Organization Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo

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On ke, 2016-10-12 at 11:56 +0200, Paul Bolle wrote:
> On a laptop that tracks the latest stable release (Ie, it now runs
> v4.8.1) I see this WARNING
>     WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock)
> 
> Full trace pasted below. I never saw this WARNING before v4.8. Since
> v4.8 I've had it in all (four, actually) boots.
> 
> What am I expected to do about this WARNING?
> 

Bisecting the offending commit between v4.8 and v4.8.1 would be a good
start.

Regards, Joonas
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation

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Thread

drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock) Paul Bolle <pebolle@tiscali.nl> - 2016-10-12 12:00 +0200
  Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk <  crtc_clock) Joonas Lahtinen <joonas.lahtinen@linux.intel.com> - 2016-10-12 13:10 +0200
    Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk <  crtc_clock) Paul Bolle <pebolle@tiscali.nl> - 2016-10-12 14:10 +0200
      Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk < crtc_clock) Jani Nikula <jani.nikula@linux.intel.com> - 2016-10-12 16:40 +0200
        Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk <  crtc_clock) Paul Bolle <pebolle@tiscali.nl> - 2016-10-12 16:50 +0200
      Re: [Intel-gfx] drm/i915: WARN_ON_ONCE(!crtc_clock || cdclk <  crtc_clock) Paul Bolle <pebolle@tiscali.nl> - 2016-10-12 20:50 +0200

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