[TIPC]: Fix simple sparse warnings

Tried to run the new tipc stack through sparse.
Following patch fixes all cases where 0 was used
as replacement of NULL.
Use NULL to document this is a pointer and to silence sparse.

This brough sparse warning count down with 127 to 24 warnings.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 14 insertions, 14 deletions

diff --git a/net/tipc/link.c b/net/tipc/link.c
index 511872afa459..bbdca3beaaf9 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -573,7 +573,7 @@ void tipc_link_wakeup_ports(struct link *l_ptr, int all)
                 if (win <= 0)
                         break;
                 list_del_init(&p_ptr->wait_list);
-                p_ptr->congested_link = 0;
+                p_ptr->congested_link = NULL;
                 assert(p_ptr->wakeup);
                 spin_lock_bh(p_ptr->publ.lock);
                 p_ptr->publ.congested = 0;
@@ -1355,7 +1355,7 @@ again:
         fragm_crs = 0;
         fragm_rest = 0;
         sect_rest = 0;
-        sect_crs = 0;
+        sect_crs = NULL;
         curr_sect = -1;
 
         /* Prepare reusable fragment header: */
@@ -1549,7 +1549,7 @@ u32 tipc_link_push_packet(struct link *l_ptr)
                         msg_dbg(buf_msg(buf), ">DEF-PROT>");
                         l_ptr->unacked_window = 0;
                         buf_discard(buf);
-                        l_ptr->proto_msg_queue = 0;
+                        l_ptr->proto_msg_queue = NULL;
                         return TIPC_OK;
                 } else {
                         msg_dbg(buf_msg(buf), "|>DEF-PROT>");
@@ -1860,7 +1860,7 @@ u32 tipc_link_defer_pkt(struct sk_buff **head,
                         struct sk_buff **tail,
                         struct sk_buff *buf)
 {
-        struct sk_buff *prev = 0;
+        struct sk_buff *prev = NULL;
         struct sk_buff *crs = *head;
         u32 seq_no = msg_seqno(buf_msg(buf));
 
@@ -1953,7 +1953,7 @@ static void link_handle_out_of_seq_msg(struct link *l_ptr,
 void tipc_link_send_proto_msg(struct link *l_ptr, u32 msg_typ, int probe_msg,
                               u32 gap, u32 tolerance, u32 priority, u32 ack_mtu)
 {
-        struct sk_buff *buf = 0;
+        struct sk_buff *buf = NULL;
         struct tipc_msg *msg = l_ptr->pmsg;
         u32 msg_size = sizeof(l_ptr->proto_msg);
 
@@ -2426,7 +2426,7 @@ static int link_recv_changeover_msg(struct link **l_ptr,
                 }
         }
 exit:
-        *buf = 0;
+        *buf = NULL;
         buf_discard(tunnel_buf);
         return 0;
 }
@@ -2586,13 +2586,13 @@ static inline void incr_timer_cnt(struct sk_buff *buf)
 int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb, 
                             struct tipc_msg **m)
 {
-        struct sk_buff *prev = 0;
+        struct sk_buff *prev = NULL;
         struct sk_buff *fbuf = *fb;
         struct tipc_msg *fragm = buf_msg(fbuf);
         struct sk_buff *pbuf = *pending;
         u32 long_msg_seq_no = msg_long_msgno(fragm);
 
-        *fb = 0;
+        *fb = NULL;
         msg_dbg(fragm,"FRG<REC<");
 
         /* Is there an incomplete message waiting for this fragment? */
@@ -2670,8 +2670,8 @@ int tipc_link_recv_fragment(struct sk_buff **pending, struct sk_buff **fb,
 
 static void link_check_defragm_bufs(struct link *l_ptr)
 {
-        struct sk_buff *prev = 0;
-        struct sk_buff *next = 0;
+        struct sk_buff *prev = NULL;
+        struct sk_buff *next = NULL;
         struct sk_buff *buf = l_ptr->defragm_buf;
 
         if (!buf)
@@ -2750,19 +2750,19 @@ static struct link *link_find_link(const char *name, struct node **node)
         struct link *l_ptr; 
 
         if (!link_name_validate(name, &link_name_parts))
-                return 0;
+                return NULL;
 
         b_ptr = tipc_bearer_find_interface(link_name_parts.if_local);
         if (!b_ptr)
-                return 0;
+                return NULL;
 
         *node = tipc_node_find(link_name_parts.addr_peer); 
         if (!*node)
-                return 0;
+                return NULL;
 
         l_ptr = (*node)->links[b_ptr->identity];
         if (!l_ptr || strcmp(l_ptr->name, name))
-                return 0;
+                return NULL;
 
         return l_ptr;
 }