--- /dev/null
+From c03fca619fc687338a3b6511fdbed94096abdf79 Mon Sep 17 00:00:00 2001
+From: Robin Chen <robin.chen@amd.com>
+Date: Fri, 23 Aug 2024 15:00:28 +0800
+Subject: drm/amd/display: Round calculated vtotal
+
+From: Robin Chen <robin.chen@amd.com>
+
+commit c03fca619fc687338a3b6511fdbed94096abdf79 upstream.
+
+[WHY]
+The calculated vtotal may has 1 line deviation. To get precisely
+vtotal number, round the vtotal result.
+
+Cc: Mario Limonciello <mario.limonciello@amd.com>
+Cc: Alex Deucher <alexander.deucher@amd.com>
+Cc: stable@vger.kernel.org
+Reviewed-by: Anthony Koo <anthony.koo@amd.com>
+Signed-off-by: Robin Chen <robin.chen@amd.com>
+Signed-off-by: Alex Hung <alex.hung@amd.com>
+Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
+Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
++++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+@@ -131,7 +131,7 @@ static unsigned int calc_v_total_from_re
+
+ v_total = div64_u64(div64_u64(((unsigned long long)(
+ frame_duration_in_ns) * (stream->timing.pix_clk_100hz / 10)),
+- stream->timing.h_total), 1000000);
++ stream->timing.h_total) + 500000, 1000000);
+
+ /* v_total cannot be less than nominal */
+ if (v_total < stream->timing.v_total) {