--- zzzz-none-000/linux-4.1.52/include/linux/seq_file_net.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/seq_file_net.h	2022-03-02 11:37:13.000000000 +0000
@@ -18,7 +18,7 @@
 		int (*show)(struct seq_file *, void *));
 int seq_release_net(struct inode *, struct file *);
 int single_release_net(struct inode *, struct file *);
-static inline struct net *seq_file_net(struct seq_file *seq)
+static inline struct net *seq_file_net(struct seq_file *seq __maybe_unused)
 {
 #ifdef CONFIG_NET_NS
 	return ((struct seq_net_private *)seq->private)->net;