Re: [PATCH 2/7] drm/i915/display: Check the old state to find port sync slave

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On Fri, Nov 22, 2019 at 04:54:54PM -0800, José Roberto de Souza wrote:
> If the CRTC is going from enabled to disabled and it is a port sync
> slave, it needs to check to the old state to be disabled before the
> port sync master.
> 
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Cc: Matt Roper <matthew.d.roper@xxxxxxxxx>
> Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/display/intel_display.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
> index 1b1fbb6d8acc..801b975c7d39 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -14460,9 +14460,9 @@ static void intel_commit_modeset_disables(struct intel_atomic_state *state)
>  		 * slave CRTCs are disabled first and then master CRTC since
>  		 * Slave vblanks are masked till Master Vblanks.
>  		 */
> -		if (!is_trans_port_sync_mode(new_crtc_state))
> +		if (!is_trans_port_sync_mode(old_crtc_state))
>  			continue;
> -		if (is_trans_port_sync_master(new_crtc_state))
> +		if (is_trans_port_sync_master(old_crtc_state))
>  			continue;

Maybe this should be patch 1?

Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

>  
>  		intel_pre_plane_update(old_crtc_state, new_crtc_state);
> -- 
> 2.24.0

-- 
Ville Syrjälä
Intel
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