diff options
| author | Alex Hung <alex.hung@amd.com> | 2024-06-18 16:21:20 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-12 11:11:31 +0200 |
| commit | dfafee0a7b51c7c9612edd2d991401294964d02f (patch) | |
| tree | a8050ed2a57507104aad11f5ab891d9041728c5f | |
| parent | dd48992a8a90e787df1cf76b2518e8212c94e0d0 (diff) | |
drm/amd/display: Check denominator pbn_div before used
[ Upstream commit 116a678f3a9abc24f5c9d2525b7393d18d9eb58e ]
[WHAT & HOW]
A denominator cannot be 0, and is checked before used.
This fixes 1 DIVIDE_BY_ZERO issue reported by Coverity.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Jerry Zuo <jerry.zuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 44c1556838240..f0ebf686b06f2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6937,7 +6937,7 @@ static int dm_update_mst_vcpi_slots_for_dsc(struct drm_atomic_state *state, } } - if (j == dc_state->stream_count) + if (j == dc_state->stream_count || pbn_div == 0) continue; slot_num = DIV_ROUND_UP(pbn, pbn_div); |