diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index 9bb07d331c3beabd9b2328650bdf0634b532b84a..a03b7279efa018850def9042339fec4af4249042 100644
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -57,7 +57,8 @@ enum x86_pf_error_code {
 };
 
 /*
- * (returns 0 if mmiotrace is disabled)
+ * Returns 0 if mmiotrace is disabled, or if the fault is not
+ * handled by mmiotrace:
  */
 static inline int kmmio_fault(struct pt_regs *regs, unsigned long addr)
 {