diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index 315c098271af10d2c3161c4ba3d0f9cf8f3cc292..ac51b7a6e8d42aa0f39be8d2c72f62f20b1f640f 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -1041,6 +1041,8 @@ static void dce_v6_0_program_watermarks(struct amdgpu_device *adev,
  * @amdgpu_crtc: the selected display controller
  * @mode: the current display mode on the selected display
  * controller
+ * @other_mode: the display mode of another display controller
+ *              that may be sharing the line buffer
  *
  * Setup up the line buffer allocation for
  * the selected display controller (CIK).