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net: irda: use seq_list_foo() helpers

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Simplify seq_file code.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Li Zefan 2010-02-08 23:21:05 +00:00 committed by David S. Miller
parent 4f134204f7
commit 216437eb8b
1 changed files with 4 additions and 24 deletions
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28
net/irda/irlan/irlan_common.c
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@ -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;);