Dividing expression num_xcc_per_xcp which may be zero has undefined behavior. Signed-off-by: Jesse Zhang <Jesse.Zhang@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c index 414ea3f560a7..5752c6760992 100644 --- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c +++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c @@ -522,6 +522,9 @@ static int aqua_vanjaram_switch_partition_mode(struct amdgpu_xcp_mgr *xcp_mgr, goto unlock; num_xcc_per_xcp = __aqua_vanjaram_get_xcc_per_xcp(xcp_mgr, mode); + if (!num_xcc_per_xcp) + goto unlock; + if (adev->gfx.funcs->switch_partition_mode) adev->gfx.funcs->switch_partition_mode(xcp_mgr->adev, num_xcc_per_xcp); -- 2.25.1
