From: Chris Park chris.park@amd.com

[Why] There are some pipe scaler validation failure when the pipe is phantom and causes crash in DML validation. Since, scalar parameters are not as important in phantom pipe and we require this plane to do successful MCLK switches, the failure condition can be ignored.

[How] Ignore scalar validation failure if the pipe validation is marked as phantom pipe.

Cc: stable@vger.kernel.org # 6.11+ Reviewed-by: Dillon Varone dillon.varone@amd.com Signed-off-by: Chris Park chris.park@amd.com Signed-off-by: Hamza Mahfooz hamza.mahfooz@amd.com --- drivers/gpu/drm/amd/display/dc/core/dc_resource.c | 8 ++++++++ 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c index 33125b95c3a1..619fad17de55 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c @@ -1501,6 +1501,10 @@ bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx) res = spl_calculate_scaler_params(spl_in, spl_out); // Convert respective out params from SPL to scaler data translate_SPL_out_params_to_pipe_ctx(pipe_ctx, spl_out); + + /* Ignore scaler failure if pipe context plane is phantom plane */ + if (!res && plane_state->is_phantom) + res = true; } else { #endif /* depends on h_active */ @@ -1571,6 +1575,10 @@ bool resource_build_scaling_params(struct pipe_ctx *pipe_ctx) &plane_state->scaling_quality); }

+ /* Ignore scaler failure if pipe context plane is phantom plane */ + if (!res && plane_state->is_phantom) + res = true; + if (res && (pipe_ctx->plane_res.scl_data.taps.v_taps != temp.v_taps || pipe_ctx->plane_res.scl_data.taps.h_taps != temp.h_taps || pipe_ctx->plane_res.scl_data.taps.v_taps_c != temp.v_taps_c ||