From: Dillon Varone dillon.varone@amd.com

When a phantom stream is in the process of being deconstructed, there could be pipes with no associated planes. In that case, ignore the phantom stream entirely when searching for associated pipes.

Cc: stable@vger.kernel.org Reviewed-by: Alvin Lee alvin.lee2@amd.com Acked-by: Hamza Mahfooz hamza.mahfooz@amd.com Signed-off-by: Dillon Varone dillon.varone@amd.com --- .../gpu/drm/amd/display/dc/dml2/dml21/dml21_utils.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_utils.c b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_utils.c index 4e12810308a4..4166332b5b89 100644 --- a/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_utils.c +++ b/drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_utils.c @@ -126,10 +126,15 @@ int dml21_find_dc_pipes_for_plane(const struct dc *in_dc, if (dc_phantom_stream && num_pipes > 0) { dc_phantom_stream_status = dml_ctx->config.callbacks.get_stream_status(context, dc_phantom_stream);

- /* phantom plane will have same index as main */ - dc_phantom_plane = dc_phantom_stream_status->plane_states[dc_plane_index]; + if (dc_phantom_stream_status) { + /* phantom plane will have same index as main */ + dc_phantom_plane = dc_phantom_stream_status->plane_states[dc_plane_index];

- dml_ctx->config.callbacks.get_dpp_pipes_for_plane(dc_phantom_plane, &context->res_ctx, dc_phantom_pipes); + if (dc_phantom_plane) { + /* only care about phantom pipes if they contain the phantom plane */ + dml_ctx->config.callbacks.get_dpp_pipes_for_plane(dc_phantom_plane, &context->res_ctx, dc_phantom_pipes); + } + } }

return num_pipes;