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>
diff --git a/net/ax25/ax25_uid.c b/net/ax25/ax25_uid.c
index 832bcf0..9f13f6e 100644
--- a/net/ax25/ax25_uid.c
+++ b/net/ax25/ax25_uid.c
@@ -146,31 +146,13 @@
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 @@
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;