1 files changed, 2 insertions, 0 deletions
diff --git a/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c b/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c
index e889f422bb..bcda0724ee 100644
--- a/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c
+++ b/MdeModulePkg/Bus/Usb/UsbKbDxe/EfiKey.c
@@ -692,6 +692,7 @@ USBKeyboardReset (
   @retval EFI_NOT_READY        There was no keystroke data available.
   @retval EFI_DEVICE_ERROR     The keystroke information was not returned due to
                                hardware errors.
+  @retval EFI_UNSUPPORTED      The device does not support the ability to read keystroke data.
 
 **/
 EFI_STATUS
@@ -975,6 +976,7 @@ USBKeyboardResetEx (
   @retval EFI_DEVICE_ERROR       The keystroke information was not returned due to
                                  hardware errors.
   @retval EFI_INVALID_PARAMETER  KeyData is NULL.
+  @retval EFI_UNSUPPORTED        The device does not support the ability to read keystroke data.
 
 **/
 EFI_STATUS