diff options
| author | Eric Cook <[email protected]> | 2017-04-26 15:51:38 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2017-09-26 22:06:43 +0000 |
| commit | 7cc9e7a68abef8d1303700bac6f58ab76bc9db7b (patch) | |
| tree | 19c9b347a3f4998ff5afad6e1eb7b3bb5b7a3cf0 /drivers/gpu/drm/amd/display/modules/freesync/freesync.c | |
| parent | drm/amd/display: fix crash caused by incorrect index being used for array (diff) | |
| download | kernel-7cc9e7a68abef8d1303700bac6f58ab76bc9db7b.tar.gz kernel-7cc9e7a68abef8d1303700bac6f58ab76bc9db7b.zip | |
drm/amd/display: Check for Zero Range in FreeSync Calc
-check for min/max range in freesync calculation and handle it accordingly
Signed-off-by: Eric <[email protected]>
Acked-by: Harry Wentland <[email protected]>
Reviewed-by: Anthony Koo <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync/freesync.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c index d3d57008271b..009cb797bcfa 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -363,6 +363,21 @@ static void calc_freesync_range(struct core_freesync *core_freesync, unsigned int index = map_index_from_stream(core_freesync, stream); uint32_t vtotal = stream->timing.v_total; + if ((min_refresh_in_uhz == 0) || (max_refresh_in_uhz == 0)) { + state->freesync_range.min_refresh = + state->nominal_refresh_rate_in_micro_hz; + state->freesync_range.max_refresh = + state->nominal_refresh_rate_in_micro_hz; + + state->freesync_range.max_frame_duration = 0; + state->freesync_range.min_frame_duration = 0; + + state->freesync_range.vmax = vtotal; + state->freesync_range.vmin = vtotal; + + return; + } + min_frame_duration_in_ns = ((unsigned int) (div64_u64( (1000000000ULL * 1000000), max_refresh_in_uhz))); |