On Mon, Sep 18, 2017 at 05:31:27PM +0000, Ville Syrjala wrote:
> From: Ville Syrjälä <ville.syrj...@linux.intel.com>
> 
> It is safe to call intel_psr_disable() on a platform without PSR. We
> don't have such a check when calling intel_psr_enable() either.
> 
> Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
> ---
>  drivers/gpu/drm/i915/intel_dp.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 887953c0f495..d0ea9c4f87c8 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -2697,8 +2697,7 @@ static void intel_disable_dp(struct intel_encoder 
> *encoder,
>       if (old_crtc_state->has_audio)
>               intel_audio_codec_disable(encoder);
>  
> -     if (HAS_PSR(dev_priv) && !HAS_DDI(dev_priv))

By removing the !HAS_DDI you are now duplicating the psr_disable on all 
platforms but VLV/CHV.

Maybe we should integrate that once for all and only call enable and disable in 
one place for
all platforms before removing this check.

But I agree HAS_PSR could be removed already.

> -             intel_psr_disable(intel_dp, old_crtc_state);
> +     intel_psr_disable(intel_dp, old_crtc_state);
>  
>       /* Make sure the panel is off before trying to change the mode. But also
>        * ensure that we have vdd while we switch off the panel. */
> -- 
> 2.13.5
> 
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