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From 3358a23d3807e3341639243c3b25ec50f303160d Mon Sep 17 00:00:00 2001
From: Mario Kleiner <mario.kleiner.de@gmail.com>
Date: Fri, 26 Apr 2019 23:40:14 +0200
Subject: [PATCH 1846/2940] drm/amd/display: Fix and simplify
apply_below_the_range()
The comparison of inserted_frame_duration_in_us against a
duration calculated from max_refresh_in_uhz is both wrong
in its math and not needed, as the min_duration_in_us value
is already cached in in_out_vrr for reuse. No need to
recalculate it wrongly at each invocation.
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
---
drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index 3d867e34f8b3..19b1eaebe484 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -437,10 +437,8 @@ static void apply_below_the_range(struct core_freesync *core_freesync,
inserted_frame_duration_in_us = last_render_time_in_us /
frames_to_insert;
- if (inserted_frame_duration_in_us <
- (1000000 / in_out_vrr->max_refresh_in_uhz))
- inserted_frame_duration_in_us =
- (1000000 / in_out_vrr->max_refresh_in_uhz);
+ if (inserted_frame_duration_in_us < in_out_vrr->min_duration_in_us)
+ inserted_frame_duration_in_us = in_out_vrr->min_duration_in_us;
/* Cache the calculated variables */
in_out_vrr->btr.inserted_duration_in_us =
--
2.17.1
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