- struct dev_rcv_lists *d = NULL;
- struct hlist_node *n;
-
- /*
- * find receive list for this device
- *
- * The hlist_for_each_entry*() macros curse through the list
- * using the pointer variable n and set d to the containing
- * struct in each list iteration. Therefore, after list
- * iteration, d is unmodified when the list is empty, and it
- * points to last list element, when the list is non-empty
- * but no match in the loop body is found. I.e. d is *not*
- * NULL when no match is found. We can, however, use the
- * cursor variable n to decide if a match was found.
- */
-
- hlist_for_each_entry_rcu(d, n, &can_rx_dev_list, list) {
- if (d->dev == dev)
- break;
- }
-
- return n ? d : NULL;