[PATCH 9/9] drm/amd/display: Use DynamicMetadataVMExtraLatency from struct

[Rodrigo Siqueira]

It was reported that on kernel v6.2-rc1, we have the following stack
size issue:

[...]/display/dc/dml/dcn314/display_mode_vba_314.c: In function
'UseMinimumDCFCLK':
[...]/display/dc/dml/dcn314/display_mode_vba_314.c:7127:1: error: the
frame size of 2208 bytes is larger than 2048 bytes
[-Werror=frame-larger-than=]

This commit replaces the local DynamicMetadataVMExtraLatency the same
version in the UseMinimumDCFCLK_vars struct.

Cc: Alex Deucher <alexdeucher at gmail.com>
Cc: Aurabindo Pillai <aurabindo.pillai at amd.com>
Cc: Hamza Mahfooz <hamza.mahfooz at amd.com>
Cc: Roman Li <roman.li at amd.com>
Cc: Geert Uytterhoeven <geert at linux-m68k.org>
Link: https://lore.kernel.org/all/20221227082932.798359-1-geert@linux-m68k.org/
Reported-by: Geert Uytterhoeven <geert at linux-m68k.org>
Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira at amd.com>
---
 .../drm/amd/display/dc/dml/dcn314/display_mode_vba_314.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

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 0811b18c22c3..b5519e9d1a1e 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
@@ -6976,7 +6976,6 @@ static void UseMinimumDCFCLK(
 	NormalEfficiency = v->PercentOfIdealFabricAndSDPPortBWReceivedAfterUrgLatency / 100.0;
 	for (i = 0; i < v->soc.num_states; ++i) {
 		for (j = 0; j <= 1; ++j) {
-			double DynamicMetadataVMExtraLatency[DC__NUM_DPP__MAX];
 			double MinimumTWait;
 			double NonDPTEBandwidth;
 			double DPTEBandwidth;
@@ -7035,14 +7034,14 @@ static void UseMinimumDCFCLK(
 				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;
@@ -7085,7 +7084,7 @@ 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) {
 						v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k] = dml_max(
 								v->UseMinimumDCFCLK_stack_reduction.DCFCLKRequiredForPeakBandwidthPerPlane[k],
@@ -7107,7 +7106,7 @@ 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];
+				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 {
-- 
2.39.0