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drm/amd/display: zeromem mypipe heap struct before using it

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[Why & How]
bug was caused when moving variable from stack to
heap because it was reusable and garbage was left
over, so we need to zero mem

Fixes: 7acc487ab5 ("drm/amd/display: reduce stack size in dcn32 dml (v2)")
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Martin Leung <Martin.Leung@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Martin Leung 2022-09-27 18:13:38 -04:00 committed by Alex Deucher
parent eae2331899
commit 5ff32b5299
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
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@ -733,6 +733,8 @@ static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
mode_lib->vba.FCLKChangeLatency, v->UrgentLatency,
mode_lib->vba.SREnterPlusExitTime);
memset(&v->dummy_vars.DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation.myPipe, 0, sizeof(DmlPipe));
v->dummy_vars.DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation.myPipe.Dppclk = mode_lib->vba.DPPCLK[k];
v->dummy_vars.DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation.myPipe.Dispclk = mode_lib->vba.DISPCLK;
v->dummy_vars.DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation.myPipe.PixelClock = mode_lib->vba.PixelClock[k];