diff --git a/net/ipv6/anycast.c b/net/ipv6/anycast.c
index d407992..5810852 100644
--- a/net/ipv6/anycast.c
+++ b/net/ipv6/anycast.c
@@ -414,7 +414,7 @@
 				break;
 		read_unlock_bh(&idev->lock);
 		in6_dev_put(idev);
-		return aca != 0;
+		return aca != NULL;
 	}
 	return 0;
 }
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index eb330a4..532425d 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -663,7 +663,7 @@
 			break;
 		}
 		gsf = kmalloc(optlen,GFP_KERNEL);
-		if (gsf == 0) {
+		if (!gsf) {
 			retv = -ENOBUFS;
 			break;
 		}
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 8668ab3..cc8d4e2 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1407,7 +1407,7 @@
 	/* we assume size > sizeof(ra) here */
 	skb = sock_alloc_send_skb(sk, size + LL_RESERVED_SPACE(dev), 1, &err);
 
-	if (skb == 0)
+	if (!skb)
 		return NULL;
 
 	skb_reserve(skb, LL_RESERVED_SPACE(dev));
@@ -2144,7 +2144,7 @@
 	/* callers have the socket lock and a write lock on ipv6_sk_mc_lock,
 	 * so no other readers or writers of iml or its sflist
 	 */
-	if (iml->sflist == 0) {
+	if (!iml->sflist) {
 		/* any-source empty exclude case */
 		return ip6_mc_del_src(idev, &iml->addr, iml->sfmode, 0, NULL, 0);
 	}
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index b761dbe..d4acd28 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -256,7 +256,7 @@
 			break;
 		case ND_OPT_PREFIX_INFO:
 			ndopts->nd_opts_pi_end = nd_opt;
-			if (ndopts->nd_opt_array[nd_opt->nd_opt_type] == 0)
+			if (!ndopts->nd_opt_array[nd_opt->nd_opt_type])
 				ndopts->nd_opt_array[nd_opt->nd_opt_type] = nd_opt;
 			break;
 #ifdef CONFIG_IPV6_ROUTE_INFO