X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/1daa5e16f9a395fb2943906a715adb35b8106988..77a9df36a77d2523dd2bc24fa17f9f04c6c175c5:/LUFA/Drivers/USB/Core/ConfigDescriptor.h

diff --git a/LUFA/Drivers/USB/Core/ConfigDescriptor.h b/LUFA/Drivers/USB/Core/ConfigDescriptor.h
index 2f0ac8e02..85cee466e 100644
--- a/LUFA/Drivers/USB/Core/ConfigDescriptor.h
+++ b/LUFA/Drivers/USB/Core/ConfigDescriptor.h
@@ -29,11 +29,8 @@
 */
 
 /** \file
- *  \brief Configuration descriptor parser API.
- *
- *  This section of the library gives a friendly API which can be used in host applications to easily
- *  parse an attached device's configuration descriptor so that endpoint, interface and other descriptor
- *  data can be extracted and used as needed.
+ *  \brief USB Configuration Descriptor definitions.
+ *  \copydetails Group_ConfigDescriptorParser
  *
  *  \note This file should not be included directly. It is automatically included as needed by the USB driver
  *        dispatch header located in LUFA/Drivers/USB/USB.h.
@@ -41,8 +38,11 @@
 
 /** \ingroup Group_Descriptors
  *  \defgroup Group_ConfigDescriptorParser Configuration Descriptor Parser
+ *  \brief USB Configuration Descriptor definitions.
  *
- *  Functions, macros, variables, enums and types related to the parsing of Configuration Descriptors.
+ *  This section of the library gives a friendly API which can be used in host applications to easily
+ *  parse an attached device's configuration descriptor so that endpoint, interface and other descriptor
+ *  data can be extracted and used as needed.
  *
  *  @{
  */
@@ -52,8 +52,8 @@
 
 	/* Includes: */
 		#include "../../../Common/Common.h"
+		#include "USBMode.h"		
 		#include "HostStandardReq.h"
-		#include "USBMode.h"
 		#include "StdDescriptors.h"
 
 	/* Enable C linkage for C++ Compilers: */
@@ -166,8 +166,10 @@
 			 *
 			 *  \return A value from the \ref USB_Host_GetConfigDescriptor_ErrorCodes_t enum.
 			 */
-			uint8_t USB_Host_GetDeviceConfigDescriptor(uint8_t ConfigNumber, uint16_t* const ConfigSizePtr, void* BufferPtr,
-			                                           uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(3);
+			uint8_t USB_Host_GetDeviceConfigDescriptor(const uint8_t ConfigNumber,
+			                                           uint16_t* const ConfigSizePtr,
+			                                           void* const BufferPtr,
+			                                           const uint16_t BufferSize) ATTR_NON_NULL_PTR_ARG(2) ATTR_NON_NULL_PTR_ARG(3);
 
 			/** Skips to the next sub-descriptor inside the configuration descriptor of the specified type value.
 			 *  The bytes remaining value is automatically decremented.
@@ -269,8 +271,11 @@
 			                                         void** CurrConfigLoc)
 			{
 				uint16_t CurrDescriptorSize = DESCRIPTOR_CAST(*CurrConfigLoc, USB_Descriptor_Header_t).Size;
+				
+				if (*BytesRem < CurrDescriptorSize)
+				  CurrDescriptorSize = *BytesRem;
 
-				*CurrConfigLoc  = ((uint8_t*)*CurrConfigLoc) + CurrDescriptorSize;
+				*CurrConfigLoc  = (void*)((uintptr_t)*CurrConfigLoc + CurrDescriptorSize);
 				*BytesRem      -= CurrDescriptorSize;
 			}