X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/431db89b00408197976d653d89d15eeef8172e1b..658234a0b0e380cf42838544515a9807a05600fa:/LUFA/Drivers/USB/Class/Host/CDC.c

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index 8ad37de73..227ab94f8 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -182,7 +182,8 @@ static uint8_t DComp_CDC_Host_NextCDCInterfaceEndpoint(void* const CurrentDescri
 	
 		uint8_t EndpointType = (CurrentEndpoint->Attributes & EP_TYPE_MASK);
 	
-		if ((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT))
+		if (((EndpointType == EP_TYPE_BULK) || (EndpointType == EP_TYPE_INTERRUPT)) &&
+		    !(Pipe_IsEndpointBound(CurrentEndpoint->EndpointAddress)))
 		{
 			return DESCRIPTOR_SEARCH_Found;
 		}
@@ -309,13 +310,22 @@ uint16_t CDC_Host_BytesReceived(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo
 	Pipe_SetPipeToken(PIPE_TOKEN_IN);
 	Pipe_Unfreeze();
 
-	if (Pipe_IsINReceived() && !(Pipe_BytesInPipe()))
-	  Pipe_ClearIN();
-	
-	BytesInPipe = Pipe_BytesInPipe();
-	Pipe_Freeze();
-	
-	return BytesInPipe;
+	if (Pipe_IsINReceived())
+	{
+		if (!(Pipe_BytesInPipe()))
+		  Pipe_ClearIN();
+		
+		BytesInPipe = Pipe_BytesInPipe();
+		Pipe_Freeze();
+		
+		return BytesInPipe;
+	}
+	else
+	{
+		Pipe_Freeze();
+		
+		return 0;
+	}
 }
 
 uint8_t CDC_Host_ReceiveByte(USB_ClassInfo_CDC_Host_t* const CDCInterfaceInfo)