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drm/amd/display: Don't program scaler if we have no surface

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If we don't have a surface in dc_commit_streams scl_data won't get
populated in resource_build_scaling_params_for_context. In this case we
shouldn't attempt to program the scaler.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Harry Wentland 2017-06-21 16:48:06 -04:00 committed by Alex Deucher
parent a95e7d737e
commit 866294f805
1 changed files with 5 additions and 3 deletions
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8
drivers/gpu/drm/amd/display/dc/dce110/dce110_hw_sequencer.c
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@ -1099,10 +1099,12 @@ static enum dc_status apply_single_controller_ctx_to_hw(
pipe_ctx->scl_data.lb_params.alpha_en = pipe_ctx->bottom_pipe != 0;
/* program_scaler and allocate_mem_input are not new asic */
if (!pipe_ctx_old || memcmp(&pipe_ctx_old->scl_data,
&pipe_ctx->scl_data,
sizeof(struct scaler_data)) != 0)
if ((!pipe_ctx_old ||
memcmp(&pipe_ctx_old->scl_data, &pipe_ctx->scl_data,
sizeof(struct scaler_data)) != 0) &&
pipe_ctx->surface) {
program_scaler(dc, pipe_ctx);
}
/* mst support - use total stream count */
#if defined(CONFIG_DRM_AMD_DC_DCN1_0)