--- zzzz-none-000/linux-3.10.107/drivers/atm/ambassador.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/atm/ambassador.c	2021-02-04 17:41:59.000000000 +0000
@@ -1403,7 +1403,7 @@
   rx.host_address = cpu_to_be32 (virt_to_bus (skb->data));
   
   skb->data = skb->head;
-  skb->tail = skb->head;
+  skb_reset_tail_pointer(skb);
   skb->len = 0;
   
   if (!rx_give (dev, &rx, pool)) {
@@ -1925,7 +1925,7 @@
   const struct firmware *fw;
   unsigned long start_address;
   const struct ihex_binrec *rec;
-  const char *errmsg = 0;
+  const char *errmsg = NULL;
   int res;
 
   res = request_ihex_firmware(&fw, "atmsar11.fw", &dev->pci_dev->dev);