net: ax25: use seq_hlist_foo() helpers

Simplify seq_file code.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 21 deletions

diff --git a/net/ax25/ax25_uid.c b/net/ax25/ax25_uid.c
index 832bcf092a01..9f13f6eefcba 100644
--- a/net/ax25/ax25_uid.c
+++ b/net/ax25/ax25_uid.c
@@ -146,31 +146,13 @@ int ax25_uid_ioctl(int cmd, struct sockaddr_ax25 *sax)
 static void *ax25_uid_seq_start(struct seq_file *seq, loff_t *pos)
         __acquires(ax25_uid_lock)
 {
-        struct ax25_uid_assoc *pt;
-        struct hlist_node *node;
-        int i = 1;
-
         read_lock(&ax25_uid_lock);
-
-        if (*pos == 0)
-                return SEQ_START_TOKEN;
-
-        ax25_uid_for_each(pt, node, &ax25_uid_list) {
-                if (i == *pos)
-                        return pt;
-                ++i;
-        }
-        return NULL;
+        return seq_hlist_start_head(&ax25_uid_list, *pos);
 }
 
 static void *ax25_uid_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-        ++*pos;
-        if (v == SEQ_START_TOKEN)
-                return ax25_uid_list.first;
-        else
-                return hlist_entry(((ax25_uid_assoc *)v)->uid_node.next,
-                           ax25_uid_assoc, uid_node);
+        return seq_hlist_next(v, &ax25_uid_list, pos);
 }
 
 static void ax25_uid_seq_stop(struct seq_file *seq, void *v)
@@ -186,8 +168,9 @@ static int ax25_uid_seq_show(struct seq_file *seq, void *v)
         if (v == SEQ_START_TOKEN)
                 seq_printf(seq, "Policy: %d\n", ax25_uid_policy);
         else {
-                struct ax25_uid_assoc *pt = v;
+                struct ax25_uid_assoc *pt;
 
+                pt = hlist_entry(v, struct ax25_uid_assoc, uid_node);
                 seq_printf(seq, "%6d %s\n", pt->uid, ax2asc(buf, &pt->call));
         }
         return 0;