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Bluetooth: Free the l2cap channel list only when refcount is zero

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Move the l2cap channel list chan->global_l under the refcnt
protection and free it based on the refcnt.

Signed-off-by: Jaganath Kanakkassery <jaganath.k@samsung.com>
Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Reviewed-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Jaganath Kanakkassery 2012-07-13 18:17:55 +05:30 committed by Gustavo Padovan
parent 3064837289
commit 4af66c691f
4 changed files with 7 additions and 6 deletions
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1
include/net/bluetooth/l2cap.h
View File

@ -759,7 +759,6 @@ int l2cap_add_scid(struct l2cap_chan *chan, __u16 scid);
struct l2cap_chan *l2cap_chan_create(void);
void l2cap_chan_close(struct l2cap_chan *chan, int reason);
void l2cap_chan_destroy(struct l2cap_chan *chan);
int l2cap_chan_connect(struct l2cap_chan *chan, __le16 psm, u16 cid,
bdaddr_t *dst, u8 dst_type);
int l2cap_chan_send(struct l2cap_chan *chan, struct msghdr *msg, size_t len,

2
net/bluetooth/a2mp.c
View File

@ -416,7 +416,7 @@ static int a2mp_chan_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb)
static void a2mp_chan_close_cb(struct l2cap_chan *chan)
{
l2cap_chan_destroy(chan);
l2cap_chan_put(chan);
}
static void a2mp_chan_state_change_cb(struct l2cap_chan *chan, int state)

8
net/bluetooth/l2cap_core.c
View File

@ -416,13 +416,15 @@ struct l2cap_chan *l2cap_chan_create(void)
return chan;
}
void l2cap_chan_destroy(struct l2cap_chan *chan)
static void l2cap_chan_destroy(struct l2cap_chan *chan)
{
BT_DBG("chan %p", chan);
write_lock(&chan_list_lock);
list_del(&chan->global_l);
write_unlock(&chan_list_lock);
l2cap_chan_put(chan);
kfree(chan);
}
void l2cap_chan_hold(struct l2cap_chan *c)
@ -437,7 +439,7 @@ void l2cap_chan_put(struct l2cap_chan *c)
BT_DBG("chan %p orig refcnt %d", c, atomic_read(&c->refcnt));
if (atomic_dec_and_test(&c->refcnt))
kfree(c);
l2cap_chan_destroy(c);
}
void l2cap_chan_set_defaults(struct l2cap_chan *chan)

2
net/bluetooth/l2cap_sock.c
View File

@ -823,7 +823,7 @@ static void l2cap_sock_kill(struct sock *sk)
/* Kill poor orphan */
l2cap_chan_destroy(l2cap_pi(sk)->chan);
l2cap_chan_put(l2cap_pi(sk)->chan);
sock_set_flag(sk, SOCK_DEAD);
sock_put(sk);
}