[Intel-gfx] [PATCH v4 2/5] drm/i915: Add support for audio driver notifications

[Pierre-Louis Bossart]

>>  #include <drm/drmP.h>
>> @@ -630,6 +631,10 @@ void intel_audio_codec_enable(struct intel_encoder *intel_encoder,
>>  	if (acomp && acomp->audio_ops && acomp->audio_ops->pin_eld_notify)
>>  		acomp->audio_ops->pin_eld_notify(acomp->audio_ops->audio_ptr,
>>  						 (int) port, (int) pipe);
>> +
>> +	if (HAS_LPE_AUDIO(dev_priv))
>> +		intel_lpe_audio_notify(dev_priv, connector->eld, port,
>> +			crtc_state->port_clock);
>
> Seems unnecessary to check for HAS_LPE_AUDIO (which you'll change to
> dev_priv->lpe_audio.platdev, right ;) both in the caller and
> callee. Pick one.

If we test inside of the function, it'd mean an unconditional jump to 
test a feature that exists on only two platforms out of the dozen or so 
that this i915 driver handles. No objection to do the change but is this 
really desired?