diff options
| author | Dean Jenkins <Dean_Jenkins@mentor.com> | 2015-10-14 10:18:45 (GMT) |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-10-20 22:49:26 (GMT) |
| commit | e7456437c15a2fd42cedd25c2b12b06876f285f0 (patch) | |
| tree | 87c6a143827fc5c107464ae2366af8ba42af095a | |
| parent | 09bf420f101c9d35ca0b5f539c7f03951fd2e24d (diff) | |
| download | linux-e7456437c15a2fd42cedd25c2b12b06876f285f0.tar.xz | |
Bluetooth: Unwind l2cap_sock_shutdown()
l2cap_sock_shutdown() is designed to only action shutdown
of the channel when shutdown is not already in progress.
Therefore, reorganise the code flow by adding a goto
to jump to the end of function handling when shutdown is
already being actioned. This removes one level of code
indentation and make the code more readable.
Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Signed-off-by: Harish Jenny K N <harish_kandiga@mentor.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | net/bluetooth/l2cap_sock.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c index 586b3d5..ca5598d 100644 --- a/net/bluetooth/l2cap_sock.c +++ b/net/bluetooth/l2cap_sock.c @@ -1111,6 +1111,11 @@ static int l2cap_sock_shutdown(struct socket *sock, int how) if (!sk) return 0; + if (sk->sk_shutdown) + goto shutdown_already; + + BT_DBG("Handling sock shutdown"); + /* prevent sk structure from being freed whilst unlocked */ sock_hold(sk); @@ -1127,23 +1132,21 @@ static int l2cap_sock_shutdown(struct socket *sock, int how) l2cap_chan_lock(chan); lock_sock(sk); - if (!sk->sk_shutdown) { - if (chan->mode == L2CAP_MODE_ERTM && - chan->unacked_frames > 0 && - chan->state == BT_CONNECTED) - err = __l2cap_wait_ack(sk, chan); + if (chan->mode == L2CAP_MODE_ERTM && + chan->unacked_frames > 0 && + chan->state == BT_CONNECTED) + err = __l2cap_wait_ack(sk, chan); - sk->sk_shutdown = SHUTDOWN_MASK; + sk->sk_shutdown = SHUTDOWN_MASK; - release_sock(sk); - l2cap_chan_close(chan, 0); - lock_sock(sk); + release_sock(sk); + l2cap_chan_close(chan, 0); + lock_sock(sk); - if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && - !(current->flags & PF_EXITING)) - err = bt_sock_wait_state(sk, BT_CLOSED, - sk->sk_lingertime); - } + if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && + !(current->flags & PF_EXITING)) + err = bt_sock_wait_state(sk, BT_CLOSED, + sk->sk_lingertime); if (!err && sk->sk_err) err = -sk->sk_err; @@ -1157,6 +1160,7 @@ static int l2cap_sock_shutdown(struct socket *sock, int how) l2cap_chan_put(chan); sock_put(sk); +shutdown_already: BT_DBG("err: %d", err); return err; |