[PATCH] drm/amd/display: Reduce dmesg error to a debug print

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From: "Leo (Hanghong) Ma" <hanghong.ma@xxxxxxx>

[Why & How]
Dmesg errors are found on dcn3.1 during reset test, but it's not
a really failure. So reduce it to a debug print.

Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@xxxxxxx>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
(cherry picked from commit 1d925758ba1a5d2716a847903e2fd04efcbd9862)
---
Add extra define guard for the backport to ensure debug messages only
come up when compiled with DCN on 5.16.

Backport to 5.16.y only, different backport for older kernel.
 drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index 94e75199d942..135ea1c422f2 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -4454,7 +4454,9 @@ bool dp_retrieve_lttpr_cap(struct dc_link *link)
 				lttpr_dpcd_data,
 				sizeof(lttpr_dpcd_data));
 		if (status != DC_OK) {
-			dm_error("%s: Read LTTPR caps data failed.\n", __func__);
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+			DC_LOG_DP2("%s: Read LTTPR caps data failed.\n", __func__);
+#endif
 			return false;
 		}
 
-- 
2.34.1




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