Re: [PATCH 3.16.y-ckt 072/104] drm/radeon: Restore LCD backlight level on resume (>= R5xx)

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On Tue, Oct 27, 2015 at 11:10:29AM +0900, Michel Dänzer wrote:
> On 26.10.2015 22:42, Luis Henriques wrote:
> > 3.16.7-ckt19 -stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: =TF-8?q?Michel Dänzer?= <michel.daenzer@xxxxxxx>
> > 
> > commit 4281f46ef839050d2ef60348f661eb463c21cc2e upstream.
> > 
> > Instead of only enabling the backlight (which seems to set it to max
> > brightness), just re-set the current backlight level, which also takes
> > care of enabling the backlight if necessary.
> > 
> > Only the radeon_atom_encoder_dpms_dig part tested on a Kaveri laptop,
> > the radeon_atom_encoder_dpms_avivo part is only compile tested.
> > 
> > Signed-off-by: Michel Dänzer <michel.daenzer@xxxxxxx>
> > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> > Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
> 
> We're currently investigating a regression which was bisected to this
> change. Please hold off on backporting this change until we have a
> solution for that.

Thanks, I'll drop this patch for this 3.16 release, and will wait for a
fix to be available.

Cheers,
--
Luís
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