snd_printdd(KERN_DEBUG "%i\n", atomic_read(&us122l->mmap_count));
}
-static struct vm_operations_struct usb_stream_hwdep_vm_ops = {
+static const struct vm_operations_struct usb_stream_hwdep_vm_ops = {
.open = usb_stream_hwdep_vm_open,
.fault = usb_stream_hwdep_vm_fault,
.close = usb_stream_hwdep_vm_close,