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drm/amd/display: avoid divided by zero

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[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>
This commit is contained in:
Charlene Liu
2024-10-22 18:42:56 -04:00
committed by Alex Deucher
parent d29bd94c4f
commit d1fd30e511
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/amd/display/modules/freesync/freesync.c
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@@ -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)));