Re: [PATCH] drm/i915: Init power domains early in driver load

[Meelis Roos <mroos@linux.ee>]

> commit ac9b8236551d1177fd07b56aef9b565d1864420d
> Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Date:   Fri Nov 27 18:55:26 2015 +0200
> 
>     drm/i915: Introduce a gmbus power domain
> 
> gmbus also needs the power domain infrastructure right from the start,
> since as soon as we register the i2c controllers someone can use them.
> 
> v2: Adjust cleanup paths too (Chris).
> 
> v3: Rebase onto -nightly (totally bogus tree I had lying around) and
> also move dpio init head (Ville).
> 
> v4: Ville instead suggested to move gmbus setup later in the sequence,
> since it's only needed by the modeset code.
> 
> v5: Move even close to the actual user, right next to the comment that
> states where we really need gmbus (and interrupts!).
> 
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Cc: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
> Cc: Imre Deak <imre.deak@intel.com>
> Cc: Jani Nikula <jani.nikula@intel.com>
> Cc: Meelis Roos <mroos@linux.ee>
> Cc: Chris Wilson <chris@chris-wilson.co.uk>
> Fixes: ac9b8236551d ("drm/i915: Introduce a gmbus power domain")
> Cc: stable@vger.kernel.org
> References: http://www.spinics.net/lists/intel-gfx/msg83075.html
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> ---
> 
> Meelis, can you pls retest this one?

I also confirmed that my 865G chipset computer was suffering from the 
same problem and the patch also helps on D865GLC mainboard with my 
userspace that autoloads eeprom driver.

-- 
Meelis Roos (mroos@linux.ee)