diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 7973183fa335..224b30214427 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -176,6 +176,7 @@ static void dce_v8_0_pageflip_interrupt_fini(struct amdgpu_device *adev)
  * @adev: amdgpu_device pointer
  * @crtc_id: crtc to cleanup pageflip on
  * @crtc_base: new address of the crtc (GPU MC address)
+ * @async: asynchronous flip
  *
  * Triggers the actual pageflip by updating the primary
  * surface base address.