net: atm: use seq_list_foo() helpers

Simplify seq_file code.

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

2 files changed, 3 insertions, 17 deletions

diff --git a/net/atm/proc.c b/net/atm/proc.c
index 476779d845eb..7a96b2376bd7 100644
--- a/net/atm/proc.c
+++ b/net/atm/proc.c
@@ -238,7 +238,7 @@ static int atm_dev_seq_show(struct seq_file *seq, void *v)
                 "Itf Type    ESI/\"MAC\"addr "
                 "AAL(TX,err,RX,err,drop) ...               [refcnt]\n";
 
-        if (v == SEQ_START_TOKEN)
+        if (v == &atm_devs)
                 seq_puts(seq, atm_dev_banner);
         else {
                 struct atm_dev *dev = list_entry(v, struct atm_dev, dev_list);
diff --git a/net/atm/resources.c b/net/atm/resources.c
index 447ed89205d8..90082904f20d 100644
--- a/net/atm/resources.c
+++ b/net/atm/resources.c
@@ -444,21 +444,10 @@ done:
         return error;
 }
 
-static inline void *dev_get_idx(loff_t left)
-{
-        struct list_head *p;
-
-        list_for_each(p, &atm_devs) {
-                if (!--left)
-                        break;
-        }
-        return (p != &atm_devs) ? p : NULL;
-}
-
 void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos)
 {
         mutex_lock(&atm_dev_mutex);
-        return *pos ? dev_get_idx(*pos) : SEQ_START_TOKEN;
+        return seq_list_start_head(&atm_devs, *pos);
 }
 
 void atm_dev_seq_stop(struct seq_file *seq, void *v)
@@ -468,8 +457,5 @@ void atm_dev_seq_stop(struct seq_file *seq, void *v)
 
 void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-        ++*pos;
-        v = (v == SEQ_START_TOKEN)
-                ? atm_devs.next : ((struct list_head *)v)->next;
-        return (v == &atm_devs) ? NULL : v;
+        return seq_list_next(v, &atm_devs, pos);
 }