diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
index 00b7aef6bdb08..e2c6ec3cc4f33 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v12_0.c
@@ -282,6 +282,8 @@ static void gmc_v12_0_flush_vm_hub(struct amdgpu_device *adev, uint32_t vmid,
  *
  * @adev: amdgpu_device pointer
  * @vmid: vm instance to flush
+ * @vmhub: which hub to flush
+ * @flush_type: the flush type
  *
  * Flush the TLB for the requested page table.
  */
@@ -321,6 +323,9 @@ static void gmc_v12_0_flush_gpu_tlb(struct amdgpu_device *adev, uint32_t vmid,
  *
  * @adev: amdgpu_device pointer
  * @pasid: pasid to be flush
+ * @flush_type: the flush type
+ * @all_hub: flush all hubs
+ * @inst: is used to select which instance of KIQ to use for the invalidation
  *
  * Flush the TLB for the requested pasid.
  */