+/**
+ * iterate backwards over list of given type safe against removal of list entry
+ * \param pos the type * to use as a loop counter.
+ * \param n another type * to use as temporary storage
+ * \param head the head for your list.
+ * \param member the name of the list_struct within the struct.
+ */
+#define list_for_each_entry_safe_reverse(pos, n, head, member) \
+ for (pos = list_entry((head)->prev, typeof(*pos), member), \
+ n = list_entry(pos->member.prev, typeof(*pos), member); \
+ &pos->member != (head); \
+ pos = n, n = list_entry(n->member.prev, typeof(*n), member))