--- zzzz-none-000/linux-2.6.39.4/net/ipv6/ip6_fib.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-atom-6490-729/linux-2.6.39.4/net/ipv6/ip6_fib.c	2021-11-10 13:38:18.000000000 +0000
@@ -194,7 +194,7 @@
 	struct fib6_table *table;
 
 	table = kzalloc(sizeof(*table), GFP_ATOMIC);
-	if (table != NULL) {
+	if (table) {
 		table->tb6_id = id;
 		table->tb6_root.leaf = net->ipv6.ip6_null_entry;
 		table->tb6_root.fn_flags = RTN_ROOT | RTN_TL_ROOT | RTN_RTINFO;
@@ -214,7 +214,7 @@
 		return tb;
 
 	tb = fib6_alloc_table(net, id);
-	if (tb != NULL)
+	if (tb)
 		fib6_link_table(net, tb);
 
 	return tb;
@@ -1012,7 +1012,7 @@
 
 		WARN_ON(fn->fn_flags & RTN_RTINFO);
 		WARN_ON(fn->fn_flags & RTN_TL_ROOT);
-		WARN_ON(fn->leaf != NULL);
+		WARN_ON(fn->leaf);
 
 		children = 0;
 		child = NULL;
@@ -1168,8 +1168,8 @@
 	struct rt6_info **rtp;
 
 #if RT6_DEBUG >= 2
-	if (rt->dst.obsolete>0) {
-		WARN_ON(fn != NULL);
+	if (rt->dst.obsolete > 0) {
+		WARN_ON(fn);
 		return -ENOENT;
 	}
 #endif