--- zzzz-none-000/linux-2.6.39.4/net/ipv6/anycast.c	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/net/ipv6/anycast.c	2021-11-10 13:23:11.000000000 +0000
@@ -72,7 +72,7 @@
 		return -EINVAL;
 
 	pac = sock_kmalloc(sk, sizeof(struct ipv6_ac_socklist), GFP_KERNEL);
-	if (pac == NULL)
+	if (!pac)
 		return -ENOMEM;
 	pac->acl_next = NULL;
 	ipv6_addr_copy(&pac->acl_addr, addr);
@@ -96,7 +96,7 @@
 	} else
 		dev = dev_get_by_index_rcu(net, ifindex);
 
-	if (dev == NULL) {
+	if (!dev) {
 		err = -ENODEV;
 		goto error;
 	}
@@ -261,7 +261,7 @@
 
 	idev = in6_dev_get(dev);
 
-	if (idev == NULL)
+	if (!idev)
 		return -EINVAL;
 
 	write_lock_bh(&idev->lock);
@@ -284,7 +284,7 @@
 
 	aca = kzalloc(sizeof(struct ifacaddr6), GFP_ATOMIC);
 
-	if (aca == NULL) {
+	if (!aca) {
 		err = -ENOMEM;
 		goto out;
 	}
@@ -362,7 +362,7 @@
 {
 	struct inet6_dev *idev = __in6_dev_get(dev);
 
-	if (idev == NULL)
+	if (!idev)
 		return -ENODEV;
 	return __ipv6_dev_ac_dec(idev, addr);
 }