1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/serial.h b/drivers/serial.h
index 0579dd4..896d831 100644
--- a/drivers/serial.h
+++ b/drivers/serial.h
@@ -16,20 +16,22 @@ public:
   SerialPort();
   ~SerialPort() = default;
 
+  bool self_check() const { return self_check_okay; }
+
   bool ready_read();
   uint8_t read();
 
   bool ready_write();
   void write(char c) override;
   void write(ViewIterator& iter) override {
-    while (iter) {
-      write(iter.next());
-    }
+    while (iter) write(iter.next());
   }
 
   void update_cursor() override {}
 
 private:
+  bool self_check_okay;
+
   enum PortOffset : uint16_t {
     BaudDiv_l = 0,         // if dlab is set
     BaudDiv_h = 1,         // if dlab is set