[PATCH] [sparse] ipv6 -- more 0 vs NULL

[Stephen Hemminger <shemminger@xxxxxxxx>]

More sparse complaints about 0 vs. NULL

diff -Nru a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
--- a/net/ipv6/ip6_output.c     2004-07-13 11:22:18 -07:00
+++ b/net/ipv6/ip6_output.c     2004-07-13 11:22:18 -07:00
@@ -561,7 +561,7 @@
                err = 0;
                offset = 0;
                frag = skb_shinfo(skb)->frag_list;
-               skb_shinfo(skb)->frag_list = 0;
+               skb_shinfo(skb)->frag_list = NULL;
                /* BUILD HEADER */
 
                tmp_hdr = kmalloc(hlen, GFP_ATOMIC);
@@ -789,7 +789,7 @@
                err = ipv6_get_saddr(*dst, &fl->fl6_dst, &fl->fl6_src);
 
                if (err) {
-#if IP6_DEBUG >= 2
+#if defined(IP6_DEBUG) && IP6_DEBUG >= 2
                        printk(KERN_DEBUG "ip6_dst_lookup: "
                               "no available source address\n");
 #endif
diff -Nru a/net/ipv6/mcast.c b/net/ipv6/mcast.c
--- a/net/ipv6/mcast.c  2004-07-13 11:22:18 -07:00
+++ b/net/ipv6/mcast.c  2004-07-13 11:22:18 -07:00
@@ -210,7 +210,7 @@
 
        mc_lst->ifindex = dev->ifindex;
        mc_lst->sfmode = MCAST_EXCLUDE;
-       mc_lst->sflist = 0;
+       mc_lst->sflist = NULL;
 
        /*
         *      now add/increase the group membership on the device
@@ -272,8 +272,8 @@
 
 struct inet6_dev *ip6_mc_find_dev(struct in6_addr *group, int ifindex)
 {
-       struct net_device *dev = 0;
-       struct inet6_dev *idev = 0;
+       struct net_device *dev = NULL;
+       struct inet6_dev *idev = NULL;
 
        if (ifindex == 0) {
                struct rt6_info *rt;
@@ -288,18 +288,18 @@
                dev = dev_get_by_index(ifindex);
 
        if (!dev)
-               return 0;
+               return NULL;
        idev = in6_dev_get(dev);
        if (!idev) {
                dev_put(dev);
-               return 0;
+               return NULL;
        }
        read_lock_bh(&idev->lock);
        if (idev->dead) {
                read_unlock_bh(&idev->lock);
                in6_dev_put(idev);
                dev_put(dev);
-               return 0;
+               return NULL;
        }
        return idev;
 }