X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/b221e7d175e4b5ca463fdd6d05b8c3fc71bd7c40..e918d977b1d4465d525ee0f742dbdeec20f7885c:/LUFA/Drivers/USB/Class/Device/CDC.c

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index 816a5f13d..aaa821e10 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -143,11 +143,11 @@ uint8_t CDC_Device_SendByte(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo,
 	Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);
 
 	if (!(Endpoint_IsReadWriteAllowed()))
-	{
-		uint8_t ErrorCode;
-	
+	{	
 		Endpoint_ClearIN();
 
+		uint8_t ErrorCode;
+
 		if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
 		  return ErrorCode;
 	}
@@ -161,20 +161,26 @@ uint8_t CDC_Device_Flush(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
 	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
 	  return ENDPOINT_READYWAIT_NoError;
 
+	uint8_t ErrorCode;
+
 	Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataINEndpointNumber);
+
+	if (!(Endpoint_BytesInEndpoint()))
+	  return ENDPOINT_READYWAIT_NoError;
+	
+	bool BankFull = !(Endpoint_IsReadWriteAllowed());
 	
-	if (Endpoint_BytesInEndpoint())
+	Endpoint_ClearIN();
+	
+	if (BankFull)
 	{
-		uint8_t ErrorCode;
-
-		Endpoint_ClearIN();
-		
 		if ((ErrorCode = Endpoint_WaitUntilReady()) != ENDPOINT_READYWAIT_NoError)
 		  return ErrorCode;
+
+		Endpoint_ClearIN();
 	}
 	
-	Endpoint_ClearIN();
-	return Endpoint_WaitUntilReady();
+	return ENDPOINT_READYWAIT_NoError;
 }
 
 uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)