[PATCH 17/31] drm/amd/display: prevent assert on error of 1 in calc_freesync_range

[harry.wentland@xxxxxxx (Harry Wentland)]

From: Dmytro Laktyushkin <Dmytro.Laktyushkin@xxxxxxx>

Change-Id: I9d88231521821e01f79dc7aa942659ba240d1eac
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin at amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
---
 drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index c5330f3cc1de..05a086c7b31a 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -422,12 +422,14 @@ static void calc_freesync_range(struct core_freesync *core_freesync,
 
 	/* In case of 4k free sync monitor, vmin or vmax cannot be less than vtotal */
 	if (state->freesync_range.vmin < vtotal) {
-		ASSERT(false);
+		/* Error of 1 is permissible */
+		ASSERT((state->freesync_range.vmin + 1) >= vtotal);
 		state->freesync_range.vmin = vtotal;
 	}
 
 	if (state->freesync_range.vmax < vtotal) {
-		ASSERT(false);
+		/* Error of 1 is permissible */
+		ASSERT((state->freesync_range.vmax + 1) >= vtotal);
 		state->freesync_range.vmax = vtotal;
 	}
 
-- 
2.11.0