From: Li Zefan <lizf@cn.fujitsu.com>
Date: Mon, 8 Feb 2010 23:21:05 +0000 (+0000)
Subject: net: irda: use seq_list_foo() helpers
X-Git-Tag: v2.6.34-rc1~233^2~392
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=commitdiff_plain;h=216437eb8b5adf12ab91e1f0c046ffba22c63431

net: irda: 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>
---

diff --git a/net/irda/irlan/irlan_common.c b/net/irda/irlan/irlan_common.c
index 315ead3cb926..e486dc89ea59 100644
--- a/net/irda/irlan/irlan_common.c
+++ b/net/irda/irlan/irlan_common.c
@@ -1128,34 +1128,14 @@ int irlan_extract_param(__u8 *buf, char *name, char *value, __u16 *len)
  */
 static void *irlan_seq_start(struct seq_file *seq, loff_t *pos)
 {
-	int i = 1;
-	struct irlan_cb *self;
-
 	rcu_read_lock();
-	if (*pos == 0)
-		return SEQ_START_TOKEN;
-
-	list_for_each_entry(self, &irlans, dev_list) {
-		if (*pos == i)
-			return self;
-		++i;
-	}
-	return NULL;
+	return seq_list_start_head(&irlans, *pos);
 }
 
 /* Return entry after v, and increment pos */
 static void *irlan_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-	struct list_head *nxt;
-
-	++*pos;
-	if (v == SEQ_START_TOKEN)
-		nxt = irlans.next;
-	else
-		nxt = ((struct irlan_cb *)v)->dev_list.next;
-
-	return (nxt == &irlans) ? NULL
-		: list_entry(nxt, struct irlan_cb, dev_list);
+	return seq_list_next(v, &irlans, pos);
 }
 
 /* End of reading /proc file */
@@ -1170,10 +1150,10 @@ static void irlan_seq_stop(struct seq_file *seq, void *v)
  */
 static int irlan_seq_show(struct seq_file *seq, void *v)
 {
-	if (v == SEQ_START_TOKEN)
+	if (v == &irlans)
 		seq_puts(seq, "IrLAN instances:\n");
 	else {
-		struct irlan_cb *self = v;
+		struct irlan_cb *self = list_entry(v, struct irlan_cb, dev_list);
 
 		IRDA_ASSERT(self != NULL, return -1;);
 		IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;);