Ensure USE_INTERNAL_SERIAL is set to NO_DESCRIPTOR if internal serial is disabled.

LUFA/DoxygenPages/ChangeLog.txt

@@ -7,6 +7,10 @@
  /** \page Page_ChangeLog Project Changelog
   *
   *  \section Sec_ChangeLogXXXXXX Version XXXXXX
+  *  <b>New:</b>
+  *  - Core:
+  *   - The USE_INTERNAL_SERIAL definition can now be overridden by the user to a custom string index (thanks to Nicohood)
+  *
   *  <b>Fixed:</b>
   *  - Core:
   *   - Fixed DeviceUsesOUTPipe flag not being set correctly in the HID host class driver (thanks to Wolfgang Schnerring)

LUFA/Drivers/USB/Core/AVR8/Device_AVR8.h

@@ -127,6 +127,7 @@
 				 */
 				#define INTERNAL_SERIAL_START_ADDRESS   0x0E
 			#else
+				#undef	USE_INTERNAL_SERIAL
 				#define USE_INTERNAL_SERIAL             NO_DESCRIPTOR
 
 				#define INTERNAL_SERIAL_LENGTH_BITS     0

LUFA/Drivers/USB/Core/UC3/Device_UC3.h

@@ -116,6 +116,7 @@
 				 */
 				#define INTERNAL_SERIAL_START_ADDRESS   0x80800204
 			#else
+				#undef	USE_INTERNAL_SERIAL
 				#define USE_INTERNAL_SERIAL             NO_DESCRIPTOR
 
 				#define INTERNAL_SERIAL_LENGTH_BITS     0

LUFA/Drivers/USB/Core/XMEGA/Device_XMEGA.h

@@ -124,6 +124,7 @@
 				 */
 				#define INTERNAL_SERIAL_START_ADDRESS   offsetof(NVM_PROD_SIGNATURES_t, LOTNUM0)
 			#else
+				#undef	USE_INTERNAL_SERIAL
 				#define USE_INTERNAL_SERIAL             NO_DESCRIPTOR
 
 				#define INTERNAL_SERIAL_LENGTH_BITS     0