Add check to Pipe_IsEndpointBound() in the Mass Storage Host mode Class driver to ensure that multiple instances of the driver can be used on a single device with multiple Mass Storage interfaces.

LUFA/Drivers/USB/Class/Host/MassStorage.c

@@ -113,9 +113,12 @@ static uint8_t DComp_NextInterfaceBulkDataEndpoint(void* CurrentDescriptor)
 		uint8_t EndpointType = (DESCRIPTOR_CAST(CurrentDescriptor,
 		                                        USB_Descriptor_Endpoint_t).Attributes & EP_TYPE_MASK);
 
-		if (EndpointType == EP_TYPE_BULK)
+		if ((EndpointType == EP_TYPE_BULK) &&
+		    (!(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress))))
+		{
 			return DESCRIPTOR_SEARCH_Found;
 		}
+	}
 	else if (DESCRIPTOR_TYPE(CurrentDescriptor) == DTYPE_Interface)
 	{
 		return DESCRIPTOR_SEARCH_Fail;

LUFA/ManPages/FutureChanges.txt

@@ -12,6 +12,7 @@
   *  or post your suggestion as an enhancement request to the project bug tracker.
   *
   *  <b>Targeted for This Release:</b>
+  *  - Simplify Mass Storage Host LowLevel SCSI demo
   *  - Finish Host Mode Class Drivers
   *      ( ) Audio
   *      (C) CDC