Re: [Intel-gfx] [PATCH 03/15] drm/amd/display: stop using connector->override_edid

[Harry Wentland <harry.wentland@amd.com>]

On 2022-10-11 09:49, Jani Nikula wrote:
> The connector->override_edid flag is strictly for EDID override debugfs
> management, and drivers have no business using it.
> 
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: Christian König <christian.koenig@amd.com>
> Cc: Xinhui Pan <Xinhui.Pan@amd.com>
> Cc: amd-gfx@lists.freedesktop.org
> Signed-off-by: Jani Nikula <jani.nikula@intel.com>
> 
> ---
> 
> I really have no idea what the functional impact here is. I can only
> guess that the intention is to abuse ->override_edid to block EDID
> property updates. In any case, this use needs to go.
> 
> It also seems really curious we get here via connector .get_modes hook!
> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index 4c73727e0b7d..d96877196a7f 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -6109,7 +6109,6 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
>  				aconnector->base.name);
>  
>  		aconnector->base.force = DRM_FORCE_OFF;
> -		aconnector->base.override_edid = false;

I'm not even sure the DRM_FORCE_OFF business is right.

Either way, I don't think amdgpu should be messing with
override_edid, so this is
Reviewed-by: Harry Wentland <harry.wentland@amd.com>

Harry

>  		return;
>  	}
>  
> @@ -6144,8 +6143,6 @@ static void handle_edid_mgmt(struct amdgpu_dm_connector *aconnector)
>  		link->verified_link_cap.link_rate = LINK_RATE_HIGH2;
>  	}
>  
> -
> -	aconnector->base.override_edid = true;
>  	create_eml_sink(aconnector);
>  }
>