Input: switch to using seq_list_xxx helpers

This is essentially just a renaming of the existing functions
as copies of seq_list_start() and seq_list_next() already existed
in the input.c.
Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

drivers/input/input.c

@@ -471,37 +471,16 @@ static unsigned int input_proc_devices_poll(struct file *file, poll_table *wait)
 	return 0;
 }
 
-static struct list_head *list_get_nth_element(struct list_head *list, loff_t *pos)
-{
-	struct list_head *node;
-	loff_t i = 0;
-
-	list_for_each(node, list)
-		if (i++ == *pos)
-			return node;
-
-	return NULL;
-}
-
-static struct list_head *list_get_next_element(struct list_head *list, struct list_head *element, loff_t *pos)
-{
-	if (element->next == list)
-		return NULL;
-
-	++(*pos);
-	return element->next;
-}
-
 static void *input_devices_seq_start(struct seq_file *seq, loff_t *pos)
 {
 	/* acquire lock here ... Yes, we do need locking, I knowi, I know... */
 
-	return list_get_nth_element(&input_dev_list, pos);
+	return seq_list_start(&input_dev_list, *pos);
 }
 
 static void *input_devices_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-	return list_get_next_element(&input_dev_list, v, pos);
+	return seq_list_next(v, &input_dev_list, pos);
 }
 
 static void input_devices_seq_stop(struct seq_file *seq, void *v)
@@ -592,13 +571,13 @@ static void *input_handlers_seq_start(struct seq_file *seq, loff_t *pos)
 {
 	/* acquire lock here ... Yes, we do need locking, I knowi, I know... */
 	seq->private = (void *)(unsigned long)*pos;
-	return list_get_nth_element(&input_handler_list, pos);
+	return seq_list_start(&input_handler_list, *pos);
 }
 
 static void *input_handlers_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
 	seq->private = (void *)(unsigned long)(*pos + 1);
-	return list_get_next_element(&input_handler_list, v, pos);
+	return seq_list_next(v, &input_handler_list, pos);
 }
 
 static void input_handlers_seq_stop(struct seq_file *seq, void *v)