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| author | Ilya Bakoulin <Ilya.Bakoulin@amd.com> | 2026-05-19 16:20:39 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-06-03 13:34:31 -0400 |
| commit | 10f5f9c0ef32d08b228bfee3684b62f36f395852 (patch) | |
| tree | 9a54b9a63fdb3210b9e4bed260e8463313231703 | |
| parent | 5a7f0ef90195940c54b0f5bb85b87da55f038c69 (diff) | |
| download | linux-10f5f9c0ef32d08b228bfee3684b62f36f395852.tar.gz linux-10f5f9c0ef32d08b228bfee3684b62f36f395852.zip | |
drm/amd/display: Avoid DPMS-on for phantom stream
[Why & How]
Calling dc_update_planes_and_stream separately for stream and its
phantom stream causes a NULL pointer dereference, since the phantom is
destroyed on the first call.
Skip the call for phantom streams.
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c b/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c index ae6ed3a52d53..d3172dbdcdf0 100644 --- a/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c +++ b/drivers/gpu/drm/amd/display/dc/link/accessories/link_dp_cts.c @@ -145,6 +145,8 @@ static void dp_retrain_link_dp_test(struct dc_link *link, // Set DPMS on with stream update // Cache all streams on current link since dc_update_planes_and_stream might kill current_state for (i = 0; i < MAX_PIPES; i++) { + if (state->streams[i] && state->streams[i]->is_phantom) + continue; if (state->streams[i] && state->streams[i]->link && state->streams[i]->link == link) streams_on_link[num_streams_on_link++] = state->streams[i]; } |