File save issue in Safari

I am using this code 

``` javascript
var blob = new Blob([atob(response.payload)], {
    "data":"attachment/csv;charset=utf-8;"
});
saveAs(blob, fname);
```

Here response.payload is blob data. Its working fine in all browsers but in safari file getting downloaded without name and opening a blank page also.  Any help will be highly appreciated. 
