linux-kernel - [PATCH 4.19 16/41] drm/amd/dm: Understand why attaching path/tile properties are needed

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Message-Id: <20181206142951.111277959@linuxfoundation.org>
Date:   Thu,  6 Dec 2018 15:38:56 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Lyude Paul <lyude@...hat.com>,
        "Jerry (Fangzhi) Zuo" <Jerry.Zuo@....com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 4.19 16/41] drm/amd/dm: Understand why attaching path/tile properties are needed

4.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Lyude Paul <lyude@...hat.com>

commit 04ac4b0ed412f65230b456fcd9aa07e13befff89 upstream.

Path property is used for userspace to know what MST connector goes to what actual DRM DisplayPort connector, the tiling property is for tiling configurations. Not sure what else there is to figure out.

Signed-off-by: Lyude Paul <lyude@...hat.com>
Reviewed-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@....com>
Cc: Stable <stable@...r.kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -377,9 +377,6 @@ dm_dp_add_mst_connector(struct drm_dp_ms
 	drm_connector_attach_encoder(&aconnector->base,
 				     &aconnector->mst_encoder->base);
 
-	/*
-	 * TODO: understand why this one is needed
-	 */
 	drm_object_attach_property(
 		&connector->base,
 		dev->mode_config.path_property,