Commit f3c23bea authored by Samson Tam's avatar Samson Tam Committed by Alex Deucher
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drm/amd/display: Uninitialized variables causing 4k60 UCLK to stay at DPM1 and not DPM0 



[Why]
SwathSizePerSurfaceY[] and SwathSizePerSurfaceC[] values are uninitialized
 because we are using += instead of = operator.

[How]
Assign values in loop with = operator.

Acked-by: default avatarAurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: default avatarSamson Tam <samson.tam@amd.com>
Reviewed-by: default avatarAric Cyr <aric.cyr@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x, 6.1.x
parent cf97eb7e

drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_util_32.c

+3 −3
Original line number Diff line number Diff line
@@ -6259,10 +6259,10 @@ bool dml32_CalculateDETSwathFillLatencyHiding(unsigned int NumberOfActiveSurface 


	/* calculate sum of single swath size for all pipes in bytes */

	for (k = 0; k < NumberOfActiveSurfaces; k++) {

		SwathSizePerSurfaceY[k] += SwathHeightY[k] * SwathWidthY[k] * BytePerPixelInDETY[k] * NumOfDPP[k];

		SwathSizePerSurfaceY[k] = SwathHeightY[k] * SwathWidthY[k] * BytePerPixelInDETY[k] * NumOfDPP[k];



		if (SwathHeightC[k] != 0)

			SwathSizePerSurfaceC[k] += SwathHeightC[k] * SwathWidthC[k] * BytePerPixelInDETC[k] * NumOfDPP[k];

			SwathSizePerSurfaceC[k] = SwathHeightC[k] * SwathWidthC[k] * BytePerPixelInDETC[k] * NumOfDPP[k];

		else

			SwathSizePerSurfaceC[k] = 0;