X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/09bedd6555a72c70f6d6bfb965225d44dec171cd..f9f1bcc25c17b031029200cd9648d76d4ee39dc4:/LUFA/Drivers/USB/Class/Device/CDC.c?ds=inline

diff --git a/LUFA/Drivers/USB/Class/Device/CDC.c b/LUFA/Drivers/USB/Class/Device/CDC.c
index 003a6b31a..31fd8f1b0 100644
--- a/LUFA/Drivers/USB/Class/Device/CDC.c
+++ b/LUFA/Drivers/USB/Class/Device/CDC.c
@@ -174,6 +174,9 @@ uint8_t CDC_Device_Flush(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
 
 uint16_t CDC_Device_BytesReceived(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)
 {
+	if ((USB_DeviceState != DEVICE_STATE_Configured) || !(CDCInterfaceInfo->State.LineEncoding.BaudRateBPS))
+	  return 0;
+
 	Endpoint_SelectEndpoint(CDCInterfaceInfo->Config.DataOUTEndpointNumber);
 
 	if (Endpoint_IsOUTReceived() && !(Endpoint_BytesInEndpoint()))