From: "Leo (Hanghong) Ma" <hanghong.ma@xxxxxxx>
[Why]
During DQE's promotion test, error appears in dmesg at boot
on dcn3.1;
[How]
Add NULL pointor check for the pointor to the amdgpu_dm_connector;
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@xxxxxxx>
Acked-by: Solomon Chiu <solomon.chiu@xxxxxxx>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc_link.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 81bf1e5a64c8..64b9c493dce2 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1917,7 +1917,7 @@ void blank_all_dp_displays(struct dc *dc, bool hw_init)
if ((signal == SIGNAL_TYPE_EDP) ||
(signal == SIGNAL_TYPE_DISPLAY_PORT)) {
- if (hw_init && signal != SIGNAL_TYPE_EDP) {
+ if (hw_init && signal != SIGNAL_TYPE_EDP && dc->links[i]->priv != NULL) {
/* DP 2.0 spec requires that we read LTTPR caps first */
dp_retrieve_lttpr_cap(dc->links[i]);
/* if any of the displays are lit up turn them off */
@@ -1943,7 +1943,7 @@ void blank_all_dp_displays(struct dc *dc, bool hw_init)
}
if (!dc->links[i]->wa_flags.dp_keep_receiver_powered ||
- (hw_init && signal != SIGNAL_TYPE_EDP))
+ (hw_init && signal != SIGNAL_TYPE_EDP && dc->links[i]->priv != NULL))
dp_receiver_power_ctrl(dc->links[i], false);
}
}
--
2.25.1
