[Bug 97283] drm/i915: Intermittent flicker (bisected)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97283

--- Comment #5 from Jay <mymailclone at t-online.de> ---
(In reply to Jani Nikula from comment #2)
> (In reply to Jay from comment #1)
> > Reversing that patch did *not* resolve the problem in 4.4.10. 
> > Tough luck!
> 
> The bisect result looked suspicious anyway.

Perhaps you like this one better:


> git bisect good                            
43d59eda1f69631c267e06ab6b94ed3c14f1f6d1 is the first bad commit                
commit 43d59eda1f69631c267e06ab6b94ed3c14f1f6d1                                 
Author: Matt Roper <matthew.d.roper at intel.com>
Date:   Thu Sep 24 15:53:07 2015 -0700

    drm/i915: Eliminate usage of plane_wm_parameters from ILK-style WM code
(v2)

    Just pull the info out of the plane state structure rather than staging
    it in an additional structure.

    v2: Add 'visible' condition to sprites_scaled so that we don't limit the
        WM level when the sprite isn't enabled.  (Ville)

    Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
    Reviewed-by(v1): Ander Conselvan de Oliveira <conselvan2 at gmail.com>
    Reviewed-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

:040000 040000 b11db95f066a752dcccb0082490eabf21f62e8db
88bc02171246d693a868cd9ddb3144ee5d9b0ea8 M     drivers


4.2, 4.3, 4.3.6 were all good. So I bisected between 4.3 and 4.4.

The patch is a huge thing that I cannot easily reverse. That's one for you. ;)

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