tipc: silence sparse warnings

Eliminate below sparse warnings:

net/tipc/link.c:1210:37: warning: cast removes address space of expression
net/tipc/link.c:1218:59: warning: incorrect type in argument 2 (different address spaces)
net/tipc/link.c:1218:59:    expected void const [noderef] <asn:1>*from
net/tipc/link.c:1218:59:    got unsigned char const [usertype] *[assigned] sect_crs
net/tipc/socket.c:341:49: warning: Using plain integer as NULL pointer
net/tipc/socket.c:1371:36: warning: Using plain integer as NULL pointer
net/tipc/socket.c:1694:57: warning: Using plain integer as NULL pointer

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Andreas Bofjäll <andreas.bofjall@ericsson.com>
Reviewed-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 3 deletions

diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index d224382d8270..3906527259d1 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -338,7 +338,7 @@ static int release(struct socket *sock)
                 buf = __skb_dequeue(&sk->sk_receive_queue);
                 if (buf == NULL)
                         break;
-                if (TIPC_SKB_CB(buf)->handle != 0)
+                if (TIPC_SKB_CB(buf)->handle != NULL)
                         kfree_skb(buf);
                 else {
                         if ((sock->state == SS_CONNECTING) ||
@@ -1364,7 +1364,7 @@ static u32 filter_rcv(struct sock *sk, struct sk_buff *buf)
                 return TIPC_ERR_OVERLOAD;
 
         /* Enqueue message */
-        TIPC_SKB_CB(buf)->handle = 0;
+        TIPC_SKB_CB(buf)->handle = NULL;
         __skb_queue_tail(&sk->sk_receive_queue, buf);
         skb_set_owner_r(buf, sk);
 
@@ -1687,7 +1687,7 @@ restart:
                 /* Disconnect and send a 'FIN+' or 'FIN-' message to peer */
                 buf = __skb_dequeue(&sk->sk_receive_queue);
                 if (buf) {
-                        if (TIPC_SKB_CB(buf)->handle != 0) {
+                        if (TIPC_SKB_CB(buf)->handle != NULL) {
                                 kfree_skb(buf);
                                 goto restart;
                         }