X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/cec699ac591a679010e07431dfb17823a79856df..d26a9ed5fd6fc60a0dfa61d04f5ae2bd7163a85d:/LUFA/Drivers/USB/Class/Host/CDC.c?ds=inline

diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index 8ad37de73..85864b05c 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -309,13 +309,22 @@ 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)