This is a note to let you know that I've just added the patch titled drm/amd/display: Fix prefetch calculations for dcn32 to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-amd-display-fix-prefetch-calculations-for-dcn32.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 246e667079e8d0fc85f842bceca8c5a3c5da5905 Mon Sep 17 00:00:00 2001 From: Dillon Varone <Dillon.Varone@xxxxxxx> Date: Thu, 3 Nov 2022 18:33:38 -0400 Subject: drm/amd/display: Fix prefetch calculations for dcn32 From: Dillon Varone <Dillon.Varone@xxxxxxx> commit 246e667079e8d0fc85f842bceca8c5a3c5da5905 upstream. [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.Lei@xxxxxxx> Acked-by: Tom Chung <chiahsuan.chung@xxxxxxx> Signed-off-by: Dillon Varone <Dillon.Varone@xxxxxxx> Tested-by: Daniel Wheeler <daniel.wheeler@xxxxxxx> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> Cc: stable@xxxxxxxxxxxxxxx # 6.0.x Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/amd/display/dc/dml/dcn32/display_mode_vba_32.c | 2 ++ 1 file changed, 2 insertions(+) --- 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 DISPCLKDPPCLKDCFCLKDeepSleep 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 Patches currently in stable-queue which might be from Dillon.Varone@xxxxxxx are queue-6.0/drm-amd-display-fix-prefetch-calculations-for-dcn32.patch