diff options
| author | Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com> | 2021-08-10 06:14:07 +0200 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2021-08-10 19:40:48 +0200 |
| commit | 27c24fda62b601d6f9ca5e992502578c4310876f (patch) | |
| tree | 8c8b233934f0504858aa56aaef312e24def204f6 /net/bluetooth/sco.c | |
| parent | Bluetooth: avoid circular locks in sco_sock_connect (diff) | |
| download | linux-27c24fda62b601d6f9ca5e992502578c4310876f.tar.xz linux-27c24fda62b601d6f9ca5e992502578c4310876f.zip | |
Bluetooth: switch to lock_sock in SCO
Since sco_sock_timeout is now scheduled using delayed work, it is no
longer run in SOFTIRQ context. Hence bh_lock_sock is no longer
necessary in SCO to synchronise between user contexts and SOFTIRQ
processing.
As such, calls to bh_lock_sock should be replaced with lock_sock to
synchronize with other concurrent processes that use lock_sock.
Signed-off-by: Desmond Cheong Zhi Xi <desmondcheongzx@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net/bluetooth/sco.c')
| -rw-r--r-- | net/bluetooth/sco.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 94a3aa686556..68b51e321e82 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -93,10 +93,10 @@ static void sco_sock_timeout(struct work_struct *work) BT_DBG("sock %p state %d", sk, sk->sk_state); - bh_lock_sock(sk); + lock_sock(sk); sk->sk_err = ETIMEDOUT; sk->sk_state_change(sk); - bh_unlock_sock(sk); + release_sock(sk); sco_sock_kill(sk); sock_put(sk); @@ -193,10 +193,10 @@ static void sco_conn_del(struct hci_conn *hcon, int err) if (sk) { sock_hold(sk); - bh_lock_sock(sk); + lock_sock(sk); sco_sock_clear_timer(sk); sco_chan_del(sk, err); - bh_unlock_sock(sk); + release_sock(sk); sco_sock_kill(sk); sock_put(sk); @@ -1105,10 +1105,10 @@ static void sco_conn_ready(struct sco_conn *conn) if (sk) { sco_sock_clear_timer(sk); - bh_lock_sock(sk); + lock_sock(sk); sk->sk_state = BT_CONNECTED; sk->sk_state_change(sk); - bh_unlock_sock(sk); + release_sock(sk); } else { sco_conn_lock(conn); @@ -1123,12 +1123,12 @@ static void sco_conn_ready(struct sco_conn *conn) return; } - bh_lock_sock(parent); + lock_sock(parent); sk = sco_sock_alloc(sock_net(parent), NULL, BTPROTO_SCO, GFP_ATOMIC, 0); if (!sk) { - bh_unlock_sock(parent); + release_sock(parent); sco_conn_unlock(conn); return; } @@ -1149,7 +1149,7 @@ static void sco_conn_ready(struct sco_conn *conn) /* Wake up parent */ parent->sk_data_ready(parent); - bh_unlock_sock(parent); + release_sock(parent); sco_conn_unlock(conn); } |