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drm/amd/display: Fix error in dmesg at boot

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[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@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Leo (Hanghong) Ma <hanghong.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Leo (Hanghong) Ma 2021-10-01 22:36:20 +08:00 committed by Alex Deucher
parent 8da5cbafb2
commit 4874ecf5fd
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc_link.c
View File

@ -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);
}
}