On Tue, 20 Feb 2018, Mustamin B Mustaffa <mustamin.b.musta...@intel.com> wrote:
> In GVT guest, when port A is DP, i915 will force it as an EDP panel,
> which
> will cause DP-1 not working in GVT guest.
> This patch fixed this issue by check intel_vgpu_active() in
> intel_ddi_compute_config().

Just repeating Ville's question from last June that went unanswered [1],
"And why exactly are you trying to register DP on port A?"

BR,
Jani.

[1] http://mid.mail-archive.com/20170614133842.GM12629@intel.com

>
> Signed-off-by: Min He <min...@intel.com>
> Signed-off-by: Nuhairi Anuar <nuhairi.an...@intel.com>
> Signed-off-by: Mustamin B Mustaffa <mustamin.b.musta...@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_ddi.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_ddi.c 
> b/drivers/gpu/drm/i915/intel_ddi.c
> index db92a26..9f5e85c 100644
> --- a/drivers/gpu/drm/i915/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/intel_ddi.c
> @@ -2720,7 +2720,7 @@ static bool intel_ddi_compute_config(struct 
> intel_encoder *encoder,
>       enum port port = encoder->port;
>       int ret;
>  
> -     if (port == PORT_A)
> +     if (port == PORT_A && !intel_vgpu_active(dev_priv))
>               pipe_config->cpu_transcoder = TRANSCODER_EDP;
>  
>       if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))

-- 
Jani Nikula, Intel Open Source Technology Center
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