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Bluetooth: Use kref for l2cap channel reference counting 

This patch changes the struct l2cap_chan and associated code to use
kref api for object refcounting and freeing.

Suggested-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Syam Sidhardhan 2012-07-27 23:51:21 +05:30 committed by Gustavo Padovan
parent ab19516a50
commit 144ad33020
2 changed files with 9 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/net/bluetooth/l2cap.h
View File

@ -433,11 +433,10 @@ struct l2cap_chan {
struct sock *sk;
struct l2cap_conn *conn;
struct kref kref;
__u8 state;
atomic_t refcnt;
__le16 psm;
__u16 dcid;
__u16 scid;

15
net/bluetooth/l2cap_core.c
View File

@ -406,7 +406,7 @@ struct l2cap_chan *l2cap_chan_create(void)
chan->state = BT_OPEN;
atomic_set(&chan->refcnt, 1);
kref_init(&chan->kref);
/* This flag is cleared in l2cap_chan_ready() */
set_bit(CONF_NOT_COMPLETE, &chan->conf_state);
@ -416,8 +416,10 @@ struct l2cap_chan *l2cap_chan_create(void)
return chan;
}
static void l2cap_chan_destroy(struct l2cap_chan *chan)
static void l2cap_chan_destroy(struct kref *kref)
{
struct l2cap_chan *chan = container_of(kref, struct l2cap_chan, kref);
BT_DBG("chan %p", chan);
write_lock(&chan_list_lock);
@ -429,17 +431,16 @@ static void l2cap_chan_destroy(struct l2cap_chan *chan)
void l2cap_chan_hold(struct l2cap_chan *c)
{
BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->refcnt));
BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->kref.refcount));
atomic_inc(&c->refcnt);
kref_get(&c->kref);
}
void l2cap_chan_put(struct l2cap_chan *c)
{
BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->refcnt));
BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->kref.refcount));
if (atomic_dec_and_test(&c->refcnt))
l2cap_chan_destroy(c);
kref_put(&c->kref, l2cap_chan_destroy);
}
void l2cap_chan_set_defaults(struct l2cap_chan *chan)