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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@amd.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Victor Lu 2021-01-14 22:24:14 -05:00 committed by Greg Kroah-Hartman
parent 76979956a8
commit f35da70b51
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -1093,8 +1093,8 @@ 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: {