FAILED: patch "[PATCH] drm/amd/pm: increase mclk switch threshold to 200 us" failed to apply to 5.9-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 5.9-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 83da6eea3af669ee0b1f1bc05ffd6150af984994 Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@amd.com>
Date: Wed, 2 Sep 2020 16:10:10 +0800
Subject: [PATCH] drm/amd/pm: increase mclk switch threshold to 200 us

To avoid underflow seen on Polaris10 with some 3440x1440
144Hz displays. As the threshold of 190 us cuts too close
to minVBlankTime of 192 us.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index 3bf8be4d107b..1e8919b0acdb 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -2883,7 +2883,7 @@ static int smu7_vblank_too_short(struct pp_hwmgr *hwmgr,
 		if (hwmgr->is_kicker)
 			switch_limit_us = data->is_memory_gddr5 ? 450 : 150;
 		else
-			switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
+			switch_limit_us = data->is_memory_gddr5 ? 200 : 150;
 		break;
 	case CHIP_VEGAM:
 		switch_limit_us = 30;