This is a note to let you know that I've just added the patch titled
drm/amd/display: Fix dc_sink kref count in emulated_link_detect
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-display-fix-dc_sink-kref-count-in-emulated_l.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 96a839ab6b46380f003bc0e49967fa2165cb352a
Author: Victor Lu <victorchengchi.lu@xxxxxxx>
Date: Thu Jan 14 22:24:14 2021 -0500
drm/amd/display: Fix dc_sink kref count in emulated_link_detect
[ Upstream commit 3ddc818d9bb877c64f5c649beab97af86c403702 ]
[why]
prev_sink is not used anywhere else in the function and the reference to
it from dc_link is replaced with a new dc_sink.
[how]
Change dc_sink_retain(prev_sink) to dc_sink_release(prev_sink).
Signed-off-by: Victor Lu <victorchengchi.lu@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Anson Jacob <Anson.Jacob@xxxxxxx>
Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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 580880212e551..e5e05a6cb62ab 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1792,8 +1792,8 @@ static void emulated_link_detect(struct dc_link *link)
link->type = dc_connection_none;
prev_sink = link->local_sink;
- if (prev_sink != NULL)
- dc_sink_retain(prev_sink);
+ if (prev_sink)
+ dc_sink_release(prev_sink);
switch (link->connector_signal) {
case SIGNAL_TYPE_HDMI_TYPE_A: {
