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From 29be0ac5310f933e19b3a1a4cf98d6a9726b64c9 Mon Sep 17 00:00:00 2001
From: Charlene Liu <charlene.liu@amd.com>
Date: Wed, 1 Mar 2017 18:20:58 -0500
Subject: [PATCH 0255/4131] drm/amd/display: sometime VtotalMin less than
VTotal (rounding issue)
Signed-off-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Jordan Lazare <Jordan.Lazare@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
index 2026ef3..7a0731e 100644
--- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
+++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c
@@ -905,7 +905,6 @@ void mod_freesync_notify_mode_change(struct mod_freesync *mod_freesync,
core_freesync = MOD_FREESYNC_TO_CORE(mod_freesync);
for (stream_index = 0; stream_index < num_streams; stream_index++) {
-
map_index = map_index_from_stream(core_freesync,
streams[stream_index]);
@@ -913,11 +912,12 @@ void mod_freesync_notify_mode_change(struct mod_freesync *mod_freesync,
if (core_freesync->map[map_index].caps->supported) {
/* Update the field rate for new timing */
- state->nominal_refresh_rate_in_micro_hz = 1000000 *
- div64_u64(div64_u64((streams[stream_index]->
- timing.pix_clk_khz * 1000),
- streams[stream_index]->timing.v_total),
- streams[stream_index]->timing.h_total);
+ unsigned long long temp;
+ temp = streams[stream_index]->timing.pix_clk_khz;
+ temp *= 1000ULL * 1000ULL * 1000ULL;
+ temp = div_u64(temp, streams[stream_index]->timing.h_total);
+ temp = div_u64(temp, streams[stream_index]->timing.v_total);
+ state->nominal_refresh_rate_in_micro_hz = (unsigned int) temp;
/* Update the stream */
update_stream(core_freesync, streams[stream_index]);
--
2.7.4
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