Re: [PATCH] Revert "drm/i915/display/vrr: Reset VRR capable property on a long hpd"

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On Wed, 23 Feb 2022, Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> This reverts commit 9bc34b4d0f3cb368241684cc5e0445d435dded44.
>
> Just oopses on most machines.
>
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxx>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Auch, "ERROR: It appears as if the changes made in Patchwork_22288
prevented too many machines from booting." [1].

Acked-by: Jani Nikula <jani.nikula@xxxxxxxxx>


[1] https://lore.kernel.org/r/164506400291.18053.4904919379639827273@xxxxxxxxxxxxxxxxxxxxxx


> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 17 ++++-------------
>  1 file changed, 4 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
> index 929e9b6febf1..1046e7fe310a 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -4455,12 +4455,6 @@ intel_dp_detect(struct drm_connector *connector,
>  		memset(&intel_dp->compliance, 0, sizeof(intel_dp->compliance));
>  		memset(intel_dp->dsc_dpcd, 0, sizeof(intel_dp->dsc_dpcd));
>  
> -		/* Reset VRR Capable property */
> -		drm_dbg_kms(&dev_priv->drm, "[CONNECTOR:%d:%s] VRR capable: FALSE\n",
> -			    connector->base.id, connector->name);
> -		drm_connector_set_vrr_capable_property(connector,
> -						       false);
> -
>  		if (intel_dp->is_mst) {
>  			drm_dbg_kms(&dev_priv->drm,
>  				    "MST device may have disappeared %d vs %d\n",
> @@ -4575,18 +4569,15 @@ static int intel_dp_get_modes(struct drm_connector *connector)
>  {
>  	struct intel_connector *intel_connector = to_intel_connector(connector);
>  	struct edid *edid;
> -	struct drm_i915_private *i915 = to_i915(connector->dev);
>  	int num_modes = 0;
>  
>  	edid = intel_connector->detect_edid;
>  	if (edid) {
> -		bool vrr_capable;
> -
>  		num_modes = intel_connector_update_modes(connector, edid);
> -		vrr_capable = intel_vrr_is_capable(connector);
> -		drm_dbg_kms(&i915->drm, "[CONNECTOR:%d:%s] VRR capable: %s\n",
> -			    connector->base.id, connector->name, yesno(vrr_capable));
> -		drm_connector_set_vrr_capable_property(connector, vrr_capable);
> +
> +		if (intel_vrr_is_capable(connector))
> +			drm_connector_set_vrr_capable_property(connector,
> +							       true);
>  	}
>  
>  	/* Also add fixed mode, which may or may not be present in EDID */

-- 
Jani Nikula, Intel Open Source Graphics Center




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