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drm/amd/display: Avoid divide by zero by initializing dummy pitch to 1

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[Why]
If the dummy values in `populate_dummy_dml_surface_cfg()` aren't updated
then they can lead to a divide by zero in downstream callers like
CalculateVMAndRowBytes()

[How]
Initialize dummy value to a value to avoid divide by zero.

Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Mark Broadworth <mark.broadworth@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mario Limonciello
2025-01-21 16:03:52 -06:00
committed by Alex Deucher
parent 724a4b400b
commit 7e40f64896
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c
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@@ -896,7 +896,7 @@ static void populate_dummy_dml_surface_cfg(struct dml_surface_cfg_st *out, unsig
out->SurfaceWidthC[location] = in->timing.h_addressable;
out->SurfaceHeightC[location] = in->timing.v_addressable;
out->PitchY[location] = ((out->SurfaceWidthY[location] + 127) / 128) * 128;
out->PitchC[location] = 0;
out->PitchC[location] = 1;
out->DCCEnable[location] = false;
out->DCCMetaPitchY[location] = 0;
out->DCCMetaPitchC[location] = 0;