diff options
| author | Chris Park <chris.park@amd.com> | 2024-05-28 15:56:22 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-06-14 16:17:15 -0400 |
| commit | d3d996ec8905a0098f160d7a4dcca2b54d48d697 (patch) | |
| tree | 780f5d4a9933bdca7af272e2c5748069bbdf1bfa | |
| parent | f2034ebb27c5222511b2225b10348ccf6f541a7f (diff) | |
drm/amd/display: Avoid programming DTO if Refclk is 0
[Why]
Reference clock, either DPREFCLK or DTBCLK can be a value of 0
which then will encounter division by 0.
[How]
Avoid further calculation and programming if refclk is not
populated.
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Acked-by: Zaeem Mohamed <zaeem.mohamed@amd.com>
Signed-off-by: Chris Park <chris.park@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dccg/dcn401/dcn401_dccg.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dccg/dcn401/dcn401_dccg.c b/drivers/gpu/drm/amd/display/dc/dccg/dcn401/dcn401_dccg.c index 3538e190f217..dac31c4cf2a7 100644 --- a/drivers/gpu/drm/amd/display/dc/dccg/dcn401/dcn401_dccg.c +++ b/drivers/gpu/drm/amd/display/dc/dccg/dcn401/dcn401_dccg.c @@ -603,6 +603,10 @@ static void dccg401_set_dp_dto( BREAK_TO_DEBUGGER(); return; } + if (!params->refclk_hz) { + BREAK_TO_DEBUGGER(); + return; + } if (!dc_is_tmds_signal(params->signal)) { uint64_t dto_integer; |