Re: [V3] drm/i915/display: Fix state mismatch in drm infoframe

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> -----Original Message-----
> From: Modem, Bhanuprakash <bhanuprakash.modem@xxxxxxxxx>
> Sent: Friday, April 23, 2021 7:46 PM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Modem, Bhanuprakash <bhanuprakash.modem@xxxxxxxxx>; Shankar, Uma
> <uma.shankar@xxxxxxxxx>; Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Subject: [V3] drm/i915/display: Fix state mismatch in drm infoframe
> 
> While reading the SDP infoframe, we are getting filtered with the encoder type
> INTEL_OUTPUT_DDI which causes the infoframe mismatch. This patch will drop
> encoder->type check as we can mask individual infoframe type.

It will be good to mention that issue happens with eDP. With that added,

Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>

> [1025.606556] i915 0000:00:02.0: [drm] *ERROR* mismatch in drm infoframe
> [1025.607865] i915 0000:00:02.0: [drm] *ERROR* expected:
> [1025.607879] i915 0000:00:02.0: HDMI infoframe: Dynamic Range and Mastering,
> version 1, length 26 [1025.607889] i915 0000:00:02.0: length: 26 [1025.607898] i915
> 0000:00:02.0: metadata type: 0 [1025.608292] i915 0000:00:02.0: eotf: 2
> [1025.608302] i915 0000:00:02.0: x[0]: 35400 [1025.608312] i915 0000:00:02.0:
> y[0]: 14599 [1025.609115] i915 0000:00:02.0: x[1]: 8500 [1025.609947] i915
> 0000:00:02.0: y[1]: 39850 [1025.609959] i915 0000:00:02.0: x[2]: 6550
> [1025.609970] i915 0000:00:02.0: y[2]: 2300 [1025.609980] i915 0000:00:02.0:
> white point x: 15634 [1025.609989] i915 0000:00:02.0: white point y: 16450
> [1025.610381] i915 0000:00:02.0: max_display_mastering_luminance: 1000
> [1025.610392] i915 0000:00:02.0: min_display_mastering_luminance: 500
> [1025.610401] i915 0000:00:02.0: max_cll: 500 [1025.610816] i915 0000:00:02.0:
> max_fall: 1000 [1025.612457] i915 0000:00:02.0: [drm] *ERROR* found:
> [1025.614354] ------------[ cut here ]------------ [1025.616244] pipe state doesn't
> match!
> [1025.617640] WARNING: CPU: 6 PID: 2114 at
> drivers/gpu/drm/i915/display/intel_display.c:9332
> intel_atomic_commit_tail+0x14d4/0x17c0 [i915]
> 
> V2:
> * Drop encoder->type check
> 
> V3:
> * Remove internal reviews
> 
> Cc: Uma Shankar <uma.shankar@xxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Bhanuprakash Modem <bhanuprakash.modem@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 4ad12dde5938..280b0b5ee70e 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -3014,9 +3014,6 @@ void intel_read_dp_sdp(struct intel_encoder *encoder,
>  		       struct intel_crtc_state *crtc_state,
>  		       unsigned int type)
>  {
> -	if (encoder->type != INTEL_OUTPUT_DDI)
> -		return;
> -
>  	switch (type) {
>  	case DP_SDP_VSC:
>  		intel_read_dp_vsc_sdp(encoder, crtc_state,
> --
> 2.20.1

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