The patch below does not apply to the 5.4-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(a)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(a)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(a)amd.com>
Cc: Harry Wentland <harry.wentland(a)amd.com>
Cc: Nicholas Kazlauskas <nicholas.kazlauskas(a)amd.com>
Cc: Andre Tomt <andre(a)tomt.net>
Cc: Oleksandr Natalenko <oleksandr(a)natalenko.name>
Signed-off-by: Alex Deucher <alexander.deucher(a)amd.com>
Cc: stable(a)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,