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File _service:download_files:0001-clang-6.4-add-miscellaneous-fixes-for-clang.patch of Package linux-px (Revision bf013b669f82ab81479cffaf7c480990)

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From 29ccbd9591c859134b5187b4c87e39ebf465aaf1 Mon Sep 17 00:00:00 2001
From: Piotr Gorski <lucjan.lucjanov@gmail.com>
Date: Mon, 26 Jun 2023 09:04:16 +0200
Subject: [PATCH] clang-6.4: add miscellaneous fixes for clang

Signed-off-by: Piotr Gorski <lucjan.lucjanov@gmail.com>
---
 .../dc/dml/dcn31/display_mode_vba_31.c        | 51 +++++++++----------
 .../dc/dml/dcn314/display_mode_vba_314.c      | 51 +++++++++----------
 .../drm/amd/display/dc/dml/display_mode_vba.h |  9 ++++
 3 files changed, 55 insertions(+), 56 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
index bd674dc30..b63b602b5 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn31/display_mode_vba_31.c
@@ -7017,7 +7017,7 @@ static double CalculateUrgentLatency(
 	return ret;
 }
 
-static void UseMinimumDCFCLK(
+static noinline_for_stack void UseMinimumDCFCLK(
 		struct display_mode_lib *mode_lib,
 		int MaxPrefetchMode,
 		int ReorderingBytes)
@@ -7025,15 +7025,10 @@ static void UseMinimumDCFCLK(
 	struct vba_vars_st *v = &mode_lib->vba;
 	int dummy1, i, j, k;
 	double NormalEfficiency,  dummy2, dummy3;
-	double TotalMaxPrefetchFlipDPTERowBandwidth[DC__VOLTAGE_STATES][2];
 
 	NormalEfficiency = v->PercentOfIdealFabricAndSDPPortBWReceivedAfterUrgLatency / 100.0;
 	for (i = 0; i < v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
-			double PixelDCFCLKCyclesRequiredInPrefetch[DC__NUM_DPP__MAX];
-			double PrefetchPixelLinesTime[DC__NUM_DPP__MAX];
-			double DCFCLKRequiredForPeakBandwidthPerPlane[DC__NUM_DPP__MAX];
-			double DynamicMetadataVMExtraLatency[DC__NUM_DPP__MAX];
 			double MinimumTWait;
 			double NonDPTEBandwidth;
 			double DPTEBandwidth;
@@ -7044,9 +7039,9 @@ static void UseMinimumDCFCLK(
 			int NoOfDPPState[DC__NUM_DPP__MAX];
 			double MinimumTvmPlus2Tr0;
 
-			TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = 0;
+			v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = 0;
 			for (k = 0; k < v->NumberOfActivePlanes; ++k) {
-				TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = TotalMaxPrefetchFlipDPTERowBandwidth[i][j]
+				v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j]
 						+ v->NoOfDPP[i][j][k] * v->DPTEBytesPerRow[i][j][k] / (15.75 * v->HTotal[k] / v->PixelClock[k]);
 			}
 
@@ -7057,7 +7052,7 @@ static void UseMinimumDCFCLK(
 			MinimumTWait = CalculateTWait(MaxPrefetchMode, v->FinalDRAMClockChangeLatency, v->UrgLatency[i], v->SREnterPlusExitTime);
 			NonDPTEBandwidth = v->TotalVActivePixelBandwidth[i][j] + v->TotalVActiveCursorBandwidth[i][j] + v->TotalMetaRowBandwidth[i][j];
 			DPTEBandwidth = (v->HostVMEnable == true || v->ImmediateFlipRequirement[0] == dm_immediate_flip_required) ?
-					TotalMaxPrefetchFlipDPTERowBandwidth[i][j] : v->TotalDPTERowBandwidth[i][j];
+					v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j] : v->TotalDPTERowBandwidth[i][j];
 			DCFCLKRequiredForAverageBandwidth = dml_max3(
 					v->ProjectedDCFCLKDeepSleep[i][j],
 					(NonDPTEBandwidth + v->TotalDPTERowBandwidth[i][j]) / v->ReturnBusWidth
@@ -7084,36 +7079,36 @@ static void UseMinimumDCFCLK(
 				double ExpectedPrefetchBWAcceleration;
 				double PrefetchTime;
 
-				PixelDCFCLKCyclesRequiredInPrefetch[k] = (v->PrefetchLinesY[i][j][k] * v->swath_width_luma_ub_all_states[i][j][k] * v->BytePerPixelY[k]
+				v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] = (v->PrefetchLinesY[i][j][k] * v->swath_width_luma_ub_all_states[i][j][k] * v->BytePerPixelY[k]
 						+ v->PrefetchLinesC[i][j][k] * v->swath_width_chroma_ub_all_states[i][j][k] * v->BytePerPixelC[k]) / NormalEfficiency / v->ReturnBusWidth;
 				DCFCLKCyclesRequiredInPrefetch = 2 * ExtraLatencyCycles / NoOfDPPState[k]
 						+ v->PDEAndMetaPTEBytesPerFrame[i][j][k] / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth * (v->GPUVMMaxPageTableLevels > 2 ? 1 : 0)
 						+ 2 * v->DPTEBytesPerRow[i][j][k] / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth
-						+ 2 * v->MetaRowBytes[i][j][k] / NormalEfficiency / v->ReturnBusWidth + PixelDCFCLKCyclesRequiredInPrefetch[k];
-				PrefetchPixelLinesTime[k] = dml_max(v->PrefetchLinesY[i][j][k], v->PrefetchLinesC[i][j][k]) * v->HTotal[k] / v->PixelClock[k];
+						+ 2 * v->MetaRowBytes[i][j][k] / NormalEfficiency / v->ReturnBusWidth + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k];
+				v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] = dml_max(v->PrefetchLinesY[i][j][k], v->PrefetchLinesC[i][j][k]) * v->HTotal[k] / v->PixelClock[k];
 				ExpectedPrefetchBWAcceleration = (v->VActivePixelBandwidth[i][j][k] + v->VActiveCursorBandwidth[i][j][k])
 						/ (v->ReadBandwidthLuma[k] + v->ReadBandwidthChroma[k]);
-				DynamicMetadataVMExtraLatency[k] =
+				v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k] =
 						(v->GPUVMEnable == true && v->DynamicMetadataEnable[k] == true && v->DynamicMetadataVMEnabled == true) ?
 								v->UrgLatency[i] * v->GPUVMMaxPageTableLevels * (v->HostVMEnable == true ? v->HostVMMaxNonCachedPageTableLevels + 1 : 1) : 0;
 				PrefetchTime = (v->MaximumVStartup[i][j][k] - 1) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait
 						- v->UrgLatency[i]
 								* ((v->GPUVMMaxPageTableLevels <= 2 ? v->GPUVMMaxPageTableLevels : v->GPUVMMaxPageTableLevels - 2)
 										* (v->HostVMEnable == true ? v->HostVMMaxNonCachedPageTableLevels + 1 : 1) - 1)
-						- DynamicMetadataVMExtraLatency[k];
+						- v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k];
 
 				if (PrefetchTime > 0) {
 					double ExpectedVRatioPrefetch;
-					ExpectedVRatioPrefetch = PrefetchPixelLinesTime[k]
-							/ (PrefetchTime * PixelDCFCLKCyclesRequiredInPrefetch[k] / DCFCLKCyclesRequiredInPrefetch);
-					DCFCLKRequiredForPeakBandwidthPerPlane[k] = NoOfDPPState[k] * PixelDCFCLKCyclesRequiredInPrefetch[k] / PrefetchPixelLinesTime[k]
+					ExpectedVRatioPrefetch = v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k]
+							/ (PrefetchTime * v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] / DCFCLKCyclesRequiredInPrefetch);
+					v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = NoOfDPPState[k] * v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] / v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k]
 							* dml_max(1.0, ExpectedVRatioPrefetch) * dml_max(1.0, ExpectedVRatioPrefetch / 4) * ExpectedPrefetchBWAcceleration;
 					if (v->HostVMEnable == true || v->ImmediateFlipRequirement[0] == dm_immediate_flip_required) {
-						DCFCLKRequiredForPeakBandwidthPerPlane[k] = DCFCLKRequiredForPeakBandwidthPerPlane[k]
+						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k]
 								+ NoOfDPPState[k] * DPTEBandwidth / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth;
 					}
 				} else {
-					DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
+					v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
 				}
 				if (v->DynamicMetadataEnable[k] == true) {
 					double TSetupPipe;
@@ -7142,19 +7137,19 @@ static void UseMinimumDCFCLK(
 							&dummy2,
 							&dummy3);
 					AllowedTimeForUrgentExtraLatency = v->MaximumVStartup[i][j][k] * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - TSetupPipe - TdmbfPipe - TdmecPipe
-							- TdmsksPipe - DynamicMetadataVMExtraLatency[k];
+							- TdmsksPipe - v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k];
 					if (AllowedTimeForUrgentExtraLatency > 0) {
-						DCFCLKRequiredForPeakBandwidthPerPlane[k] = dml_max(
-								DCFCLKRequiredForPeakBandwidthPerPlane[k],
+						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = dml_max(
+								v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k],
 								ExtraLatencyCycles / AllowedTimeForUrgentExtraLatency);
 					} else {
-						DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
+						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
 					}
 				}
 			}
 			DCFCLKRequiredForPeakBandwidth = 0;
 			for (k = 0; k <= v->NumberOfActivePlanes - 1; ++k) {
-				DCFCLKRequiredForPeakBandwidth = DCFCLKRequiredForPeakBandwidth + DCFCLKRequiredForPeakBandwidthPerPlane[k];
+				DCFCLKRequiredForPeakBandwidth = DCFCLKRequiredForPeakBandwidth + v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k];
 			}
 			MinimumTvmPlus2Tr0 = v->UrgLatency[i]
 					* (v->GPUVMEnable == true ?
@@ -7163,14 +7158,14 @@ static void UseMinimumDCFCLK(
 							0);
 			for (k = 0; k < v->NumberOfActivePlanes; ++k) {
 				double MaximumTvmPlus2Tr0PlusTsw;
-				MaximumTvmPlus2Tr0PlusTsw = (v->MaximumVStartup[i][j][k] - 2) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - DynamicMetadataVMExtraLatency[k];
-				if (MaximumTvmPlus2Tr0PlusTsw <= MinimumTvmPlus2Tr0 + PrefetchPixelLinesTime[k] / 4) {
+				MaximumTvmPlus2Tr0PlusTsw = (v->MaximumVStartup[i][j][k] - 2) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k];
+				if (MaximumTvmPlus2Tr0PlusTsw <= MinimumTvmPlus2Tr0 + v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] / 4) {
 					DCFCLKRequiredForPeakBandwidth = v->DCFCLKPerState[i];
 				} else {
 					DCFCLKRequiredForPeakBandwidth = dml_max3(
 							DCFCLKRequiredForPeakBandwidth,
-							2 * ExtraLatencyCycles / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0 - PrefetchPixelLinesTime[k] / 4),
-							(2 * ExtraLatencyCycles + PixelDCFCLKCyclesRequiredInPrefetch[k]) / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0));
+							2 * ExtraLatencyCycles / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0 - v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] / 4),
+							(2 * ExtraLatencyCycles + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k]) / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0));
 				}
 			}
 			v->DCFCLKState[i][j] = dml_min(v->DCFCLKPerState[i], 1.05 * dml_max(DCFCLKRequiredForAverageBandwidth, DCFCLKRequiredForPeakBandwidth));
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c b/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
index 7eb2173b7..1b4ce00e6 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c
@@ -7061,7 +7061,7 @@ static double CalculateUrgentLatency(
 	return ret;
 }
 
-static void UseMinimumDCFCLK(
+static noinline_for_stack void UseMinimumDCFCLK(
 		struct display_mode_lib *mode_lib,
 		int MaxPrefetchMode,
 		int ReorderingBytes)
@@ -7069,15 +7069,10 @@ static void UseMinimumDCFCLK(
 	struct vba_vars_st *v = &mode_lib->vba;
 	int dummy1, i, j, k;
 	double NormalEfficiency,  dummy2, dummy3;
-	double TotalMaxPrefetchFlipDPTERowBandwidth[DC__VOLTAGE_STATES][2];
 
 	NormalEfficiency = v->PercentOfIdealFabricAndSDPPortBWReceivedAfterUrgLatency / 100.0;
 	for (i = 0; i < v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
-			double PixelDCFCLKCyclesRequiredInPrefetch[DC__NUM_DPP__MAX];
-			double PrefetchPixelLinesTime[DC__NUM_DPP__MAX];
-			double DCFCLKRequiredForPeakBandwidthPerPlane[DC__NUM_DPP__MAX];
-			double DynamicMetadataVMExtraLatency[DC__NUM_DPP__MAX];
 			double MinimumTWait;
 			double NonDPTEBandwidth;
 			double DPTEBandwidth;
@@ -7088,9 +7083,9 @@ static void UseMinimumDCFCLK(
 			int NoOfDPPState[DC__NUM_DPP__MAX];
 			double MinimumTvmPlus2Tr0;
 
-			TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = 0;
+			v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = 0;
 			for (k = 0; k < v->NumberOfActivePlanes; ++k) {
-				TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = TotalMaxPrefetchFlipDPTERowBandwidth[i][j]
+				v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j] = v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j]
 						+ v->NoOfDPP[i][j][k] * v->DPTEBytesPerRow[i][j][k] / (15.75 * v->HTotal[k] / v->PixelClock[k]);
 			}
 
@@ -7100,7 +7095,7 @@ static void UseMinimumDCFCLK(
 			MinimumTWait = CalculateTWait(MaxPrefetchMode, v->FinalDRAMClockChangeLatency, v->UrgLatency[i], v->SREnterPlusExitTime);
 			NonDPTEBandwidth = v->TotalVActivePixelBandwidth[i][j] + v->TotalVActiveCursorBandwidth[i][j] + v->TotalMetaRowBandwidth[i][j];
 			DPTEBandwidth = (v->HostVMEnable == true || v->ImmediateFlipRequirement[0] == dm_immediate_flip_required) ?
-					TotalMaxPrefetchFlipDPTERowBandwidth[i][j] : v->TotalDPTERowBandwidth[i][j];
+					v->UseMinimumDCFCLK_stack_reduction.TotalMaxPrefetchFlipDPTERowBandwidth[i][j] : v->TotalDPTERowBandwidth[i][j];
 			DCFCLKRequiredForAverageBandwidth = dml_max3(
 					v->ProjectedDCFCLKDeepSleep[i][j],
 					(NonDPTEBandwidth + v->TotalDPTERowBandwidth[i][j]) / v->ReturnBusWidth
@@ -7127,37 +7122,37 @@ static void UseMinimumDCFCLK(
 				double ExpectedPrefetchBWAcceleration;
 				double PrefetchTime;
 
-				PixelDCFCLKCyclesRequiredInPrefetch[k] = (v->PrefetchLinesY[i][j][k] * v->swath_width_luma_ub_all_states[i][j][k] * v->BytePerPixelY[k]
+				v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] = (v->PrefetchLinesY[i][j][k] * v->swath_width_luma_ub_all_states[i][j][k] * v->BytePerPixelY[k]
 						+ v->PrefetchLinesC[i][j][k] * v->swath_width_chroma_ub_all_states[i][j][k] * v->BytePerPixelC[k]) / NormalEfficiency / v->ReturnBusWidth;
 				DCFCLKCyclesRequiredInPrefetch = 2 * ExtraLatencyCycles / NoOfDPPState[k]
 						+ v->PDEAndMetaPTEBytesPerFrame[i][j][k] / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth * (v->GPUVMMaxPageTableLevels > 2 ? 1 : 0)
 						+ 2 * v->DPTEBytesPerRow[i][j][k] / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth
-						+ 2 * v->MetaRowBytes[i][j][k] / NormalEfficiency / v->ReturnBusWidth + PixelDCFCLKCyclesRequiredInPrefetch[k];
-				PrefetchPixelLinesTime[k] = dml_max(v->PrefetchLinesY[i][j][k], v->PrefetchLinesC[i][j][k]) * v->HTotal[k] / v->PixelClock[k];
+						+ 2 * v->MetaRowBytes[i][j][k] / NormalEfficiency / v->ReturnBusWidth + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k];
+				v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] = dml_max(v->PrefetchLinesY[i][j][k], v->PrefetchLinesC[i][j][k]) * v->HTotal[k] / v->PixelClock[k];
 				ExpectedPrefetchBWAcceleration = (v->VActivePixelBandwidth[i][j][k] + v->VActiveCursorBandwidth[i][j][k])
 						/ (v->ReadBandwidthLuma[k] + v->ReadBandwidthChroma[k]);
-				DynamicMetadataVMExtraLatency[k] =
+				v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k] =
 						(v->GPUVMEnable == true && v->DynamicMetadataEnable[k] == true && v->DynamicMetadataVMEnabled == true) ?
 								v->UrgLatency[i] * v->GPUVMMaxPageTableLevels * (v->HostVMEnable == true ? v->HostVMMaxNonCachedPageTableLevels + 1 : 1) : 0;
 				PrefetchTime = (v->MaximumVStartup[i][j][k] - 1) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait
 						- v->UrgLatency[i]
 								* ((v->GPUVMMaxPageTableLevels <= 2 ? v->GPUVMMaxPageTableLevels : v->GPUVMMaxPageTableLevels - 2)
 										* (v->HostVMEnable == true ? v->HostVMMaxNonCachedPageTableLevels + 1 : 1) - 1)
-						- DynamicMetadataVMExtraLatency[k];
+						- v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k];
 
 				if (PrefetchTime > 0) {
 					double ExpectedVRatioPrefetch;
 
-					ExpectedVRatioPrefetch = PrefetchPixelLinesTime[k]
-							/ (PrefetchTime * PixelDCFCLKCyclesRequiredInPrefetch[k] / DCFCLKCyclesRequiredInPrefetch);
-					DCFCLKRequiredForPeakBandwidthPerPlane[k] = NoOfDPPState[k] * PixelDCFCLKCyclesRequiredInPrefetch[k] / PrefetchPixelLinesTime[k]
+					ExpectedVRatioPrefetch = v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k]
+							/ (PrefetchTime * v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] / DCFCLKCyclesRequiredInPrefetch);
+					v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = NoOfDPPState[k] * v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k] / v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k]
 							* dml_max(1.0, ExpectedVRatioPrefetch) * dml_max(1.0, ExpectedVRatioPrefetch / 4) * ExpectedPrefetchBWAcceleration;
 					if (v->HostVMEnable == true || v->ImmediateFlipRequirement[0] == dm_immediate_flip_required) {
-						DCFCLKRequiredForPeakBandwidthPerPlane[k] = DCFCLKRequiredForPeakBandwidthPerPlane[k]
+						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k]
 								+ NoOfDPPState[k] * DPTEBandwidth / NormalEfficiency / NormalEfficiency / v->ReturnBusWidth;
 					}
 				} else {
-					DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
+					v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
 				}
 				if (v->DynamicMetadataEnable[k] == true) {
 					double TSetupPipe;
@@ -7186,19 +7181,19 @@ static void UseMinimumDCFCLK(
 							&dummy2,
 							&dummy3);
 					AllowedTimeForUrgentExtraLatency = v->MaximumVStartup[i][j][k] * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - TSetupPipe - TdmbfPipe - TdmecPipe
-							- TdmsksPipe - DynamicMetadataVMExtraLatency[k];
+							- TdmsksPipe - v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k];
 					if (AllowedTimeForUrgentExtraLatency > 0) {
-						DCFCLKRequiredForPeakBandwidthPerPlane[k] = dml_max(
-								DCFCLKRequiredForPeakBandwidthPerPlane[k],
+						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = dml_max(
+								v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k],
 								ExtraLatencyCycles / AllowedTimeForUrgentExtraLatency);
 					} else {
-						DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
+						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = v->DCFCLKPerState[i];
 					}
 				}
 			}
 			DCFCLKRequiredForPeakBandwidth = 0;
 			for (k = 0; k <= v->NumberOfActivePlanes - 1; ++k)
-				DCFCLKRequiredForPeakBandwidth = DCFCLKRequiredForPeakBandwidth + DCFCLKRequiredForPeakBandwidthPerPlane[k];
+				DCFCLKRequiredForPeakBandwidth = DCFCLKRequiredForPeakBandwidth + v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k];
 
 			MinimumTvmPlus2Tr0 = v->UrgLatency[i]
 					* (v->GPUVMEnable == true ?
@@ -7208,14 +7203,14 @@ static void UseMinimumDCFCLK(
 			for (k = 0; k < v->NumberOfActivePlanes; ++k) {
 				double MaximumTvmPlus2Tr0PlusTsw;
 
-				MaximumTvmPlus2Tr0PlusTsw = (v->MaximumVStartup[i][j][k] - 2) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - DynamicMetadataVMExtraLatency[k];
-				if (MaximumTvmPlus2Tr0PlusTsw <= MinimumTvmPlus2Tr0 + PrefetchPixelLinesTime[k] / 4) {
+				MaximumTvmPlus2Tr0PlusTsw = (v->MaximumVStartup[i][j][k] - 2) * v->HTotal[k] / v->PixelClock[k] - MinimumTWait - v->UseMinimumDCFCLK_stack_reduction.DynamicMetadataVMExtraLatency[k];
+				if (MaximumTvmPlus2Tr0PlusTsw <= MinimumTvmPlus2Tr0 + v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] / 4) {
 					DCFCLKRequiredForPeakBandwidth = v->DCFCLKPerState[i];
 				} else {
 					DCFCLKRequiredForPeakBandwidth = dml_max3(
 							DCFCLKRequiredForPeakBandwidth,
-							2 * ExtraLatencyCycles / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0 - PrefetchPixelLinesTime[k] / 4),
-							(2 * ExtraLatencyCycles + PixelDCFCLKCyclesRequiredInPrefetch[k]) / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0));
+							2 * ExtraLatencyCycles / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0 - v->UseMinimumDCFCLK_stack_reduction.PrefetchPixelLinesTime[k] / 4),
+							(2 * ExtraLatencyCycles + v->UseMinimumDCFCLK_stack_reduction.PixelDCFCLKCyclesRequiredInPrefetch[k]) / (MaximumTvmPlus2Tr0PlusTsw - MinimumTvmPlus2Tr0));
 				}
 			}
 			v->DCFCLKState[i][j] = dml_min(v->DCFCLKPerState[i], 1.05 * dml_max(DCFCLKRequiredForAverageBandwidth, DCFCLKRequiredForPeakBandwidth));
diff --git a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
index 07993741f..653945d8f 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
+++ b/drivers/gpu/drm/amd/display/dc/dml/display_mode_vba.h
@@ -250,6 +250,14 @@ struct dml32_ModeSupportAndSystemConfigurationFull {
 	bool dummy_boolean[2];
 };
 
+struct UseMinimumDCFCLK_vars {
+	double TotalMaxPrefetchFlipDPTERowBandwidth[DC__VOLTAGE_STATES][2];
+	double PixelDCFCLKCyclesRequiredInPrefetch[DC__NUM_DPP__MAX];
+	double PrefetchPixelLinesTime[DC__NUM_DPP__MAX];
+	double DCFCLKRequiredForPeakBandwidthPerPlane[DC__NUM_DPP__MAX];
+	double DynamicMetadataVMExtraLatency[DC__NUM_DPP__MAX];
+};
+
 struct dummy_vars {
 	struct DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation
 	DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation;
@@ -1238,6 +1246,7 @@ struct vba_vars_st {
 	bool VActiveBandwithSupport[DC__VOLTAGE_STATES][2];
 	bool NotEnoughDETSwathFillLatencyHidingPerState[DC__VOLTAGE_STATES][2];
 	struct dummy_vars dummy_vars;
+	struct UseMinimumDCFCLK_vars UseMinimumDCFCLK_stack_reduction;
 };
 
 bool CalculateMinAndMaxPrefetchMode(
-- 
2.41.0

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File _service:download_files:0001-clang-6.4-add-miscellaneous-fixes-for-clang.patch of Package linux-px (Revision bf013b669f82ab81479cffaf7c480990)

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