[PATCH 23/29] drm/amd/display: Fix prefetch calculations for dcn32

[Tom Chung]

From: Dillon Varone <dillon.var...@amd.com>

[Description]
Prefetch calculation loop was not exiting until utilizing all of vstartup if it
failed once.  Locals need to be reset on each iteration of the loop.

Reviewed-by: Jun Lei <jun....@amd.com>
Acked-by: Tom Chung <chiahsuan.ch...@amd.com>
Signed-off-by: Dillon Varone <dillon.var...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c 
b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
index 7aaf67b464e0..e5c8f6a71b5b 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c
@@ -718,6 +718,8 @@ static void 
DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerforman
 
        do {
                MaxTotalRDBandwidth = 0;
+               DestinationLineTimesForPrefetchLessThan2 = false;
+               VRatioPrefetchMoreThanMax = false;
 #ifdef __DML_VBA_DEBUG__
                dml_print("DML::%s: Start loop: VStartup = %d\n", __func__, 
mode_lib->vba.VStartupLines);
 #endif
-- 
2.25.1