X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/afe6ae14023c7040befe73e49d00077d3425c564..2626ecb261e3cac22c602a92034b32c4e6d2be87:/LUFA/Drivers/USB/Class/MassStorage.h

diff --git a/LUFA/Drivers/USB/Class/MassStorage.h b/LUFA/Drivers/USB/Class/MassStorage.h
index 5733b7225..7da45734f 100644
--- a/LUFA/Drivers/USB/Class/MassStorage.h
+++ b/LUFA/Drivers/USB/Class/MassStorage.h
@@ -37,8 +37,12 @@
  *    - LUFA/Drivers/USB/Class/Host/MassStorage.c
  *
  *  \section Module Description
- *  Functions, macros, variables, enums and types related to the management of USB Mass Storage Class interfaces
- *  within a USB device.
+ *  Mass Storage Class Driver module. This module contains an internal implementation of the USB Mass Storage Class, for both
+ *  Device and Host USB modes. User applications can use this class driver instead of implementing the Mass Storage class
+ *  manually via the low-level LUFA APIs.
+ *
+ *  This module is designed to simplify the user code by exposing only the required interface needed to interface with
+ *  Hosts or Devices using the USB Mass Storage Class.
  *
  *  @{
  */
@@ -49,6 +53,10 @@
 	/* Includes: */
 		#include "../HighLevel/USBMode.h"
 
+		#if defined(NO_STREAM_CALLBACKS)
+			#error The NO_STREAM_CALLBACKS compile time option cannot be used in projects using the library Class drivers.
+		#endif
+
 		#if defined(USB_CAN_BE_DEVICE)
 			#include "Device/MassStorage.h"
 		#endif