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-rw-r--r--hw/serial-pci.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/hw/serial-pci.c b/hw/serial-pci.c
index badd297220..95dc5c8d2f 100644
--- a/hw/serial-pci.c
+++ b/hw/serial-pci.c
@@ -23,6 +23,8 @@
  * THE SOFTWARE.
  */
 
+/* see docs/specs/pci-serial.txt */
+
 #include "serial.h"
 #include "pci.h"