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, 3 insertions, 15 deletions

diff --git a/net/ax25/af_ax25.c b/net/ax25/af_ax25.c
index 5588ba69c468..a5beedf43e2d 100644
--- a/net/ax25/af_ax25.c
+++ b/net/ax25/af_ax25.c
@@ -1863,25 +1863,13 @@ static int ax25_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
 static void *ax25_info_start(struct seq_file *seq, loff_t *pos)
         __acquires(ax25_list_lock)
 {
-        struct ax25_cb *ax25;
-        struct hlist_node *node;
-        int i = 0;
-
         spin_lock_bh(&ax25_list_lock);
-        ax25_for_each(ax25, node, &ax25_list) {
-                if (i == *pos)
-                        return ax25;
-                ++i;
-        }
-        return NULL;
+        return seq_hlist_start(&ax25_list, *pos);
 }
 
 static void *ax25_info_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-        ++*pos;
-
-        return hlist_entry( ((struct ax25_cb *)v)->ax25_node.next,
-                            struct ax25_cb, ax25_node);
+        return seq_hlist_next(v, &ax25_list, pos);
 }
 
 static void ax25_info_stop(struct seq_file *seq, void *v)
@@ -1892,7 +1880,7 @@ static void ax25_info_stop(struct seq_file *seq, void *v)
 
 static int ax25_info_show(struct seq_file *seq, void *v)
 {
-        ax25_cb *ax25 = v;
+        ax25_cb *ax25 = hlist_entry(v, struct ax25_cb, ax25_node);
         char buf[11];
         int k;