FAILED: patch "[PATCH] Revert "drm/amd/display: Fix memory leaks in S3 resume"" failed to apply to 5.10-stable tree - Linux-stable-mirror

11 Jan 2021

The patch below does not apply to the 5.10-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
...
From 5efc1f4b454c6179d35e7b0c3eda0ad5763a00fc Mon Sep 17 00:00:00 2001
From: Alex Deucher alexander.deucher@amd.com
Date: Tue, 5 Jan 2021 11:42:08 -0500
Subject: [PATCH] Revert "drm/amd/display: Fix memory leaks in S3 resume"
This reverts commit a135a1b4c4db1f3b8cbed9676a40ede39feb3362.
This leads to blank screens on some boards after replugging a
display.  Revert until we understand the root cause and can
fix both the leak and the blank screen after replug.
Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211033
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1427
Cc: Stylon Wang stylon.wang@amd.com
Cc: Harry Wentland harry.wentland@amd.com
Cc: Nicholas Kazlauskas nicholas.kazlauskas@amd.com
Cc: Andre Tomt andre@tomt.net
Cc: Oleksandr Natalenko oleksandr@natalenko.name
Signed-off-by: Alex Deucher alexander.deucher@amd.com
Cc: stable@vger.kernel.org

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 3fb6baf9b0ba..146486071d01 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2386,8 +2386,7 @@ void amdgpu_dm_update_connector_after_detect(
drm_connector_update_edid_property(connector,
    						   aconnector->edid);
-			aconnector->num_modes = drm_add_edid_modes(connector, aconnector->edid);
-			drm_connector_list_update(connector);
+			drm_add_edid_modes(connector, aconnector->edid);
if (aconnector->dc_link->aux_mode)
    			drm_dp_cec_set_edid(&aconnector->dm_dp_aux.aux,

    