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| author | Charlene Liu <Charlene.Liu@amd.com> | 2024-10-22 18:42:56 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-11-04 11:33:40 -0500 |
| commit | d1fd30e511a70911151dc9f71c705e1fab175cef (patch) | |
| tree | 50c03b97cd202d78cd6214b49b2743e8b655c811 /drivers/gpu/drm/amd/display/modules/freesync | |
| parent | d29bd94c4fc9f10e043a5a207c902b4261cb7fd7 (diff) | |
| download | linux-d1fd30e511a70911151dc9f71c705e1fab175cef.tar.gz linux-d1fd30e511a70911151dc9f71c705e1fab175cef.tar.bz2 linux-d1fd30e511a70911151dc9f71c705e1fab175cef.zip | |
drm/amd/display: avoid divided by zero
[why]
insert divided by zero protection
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Charlene Liu <Charlene.Liu@amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/modules/freesync')
| -rw-r--r-- | drivers/gpu/drm/amd/display/modules/freesync/freesync.c | 3 |
1 files changed, 3 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 fc4268729017..f980a84dceef 100644 --- a/drivers/gpu/drm/amd/display/modules/freesync/freesync.c +++ b/drivers/gpu/drm/amd/display/modules/freesync/freesync.c @@ -129,6 +129,9 @@ unsigned int mod_freesync_calc_v_total_from_refresh( unsigned int v_total; unsigned int frame_duration_in_ns; + if (refresh_in_uhz == 0) + return stream->timing.v_total; + frame_duration_in_ns = ((unsigned int)(div64_u64((1000000000ULL * 1000000), refresh_in_uhz))); |