diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 9c88d6e90c3b..615eab3f78c9 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1826,6 +1826,7 @@ static void svm_range_restore_work(struct work_struct *work)
  * @mm: current process mm_struct
  * @start: starting process queue number
  * @last: last process queue number
+ * @event: mmu notifier event when range is evicted or migrated
  *
  * Stop all queues of the process to ensure GPU doesn't access the memory, then
  * return to let CPU evict the buffer and proceed CPU pagetable update.