Fix race conditions which can cause lost wakeups while waiting
for sock state to change.
Signed-off-by: Peter Hurley <[email protected]>
---
net/bluetooth/af_bluetooth.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 8add9b4..117e0d1 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -494,9 +494,8 @@ int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
BT_DBG("sk %p", sk);
add_wait_queue(sk_sleep(sk), &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
while (sk->sk_state != state) {
- set_current_state(TASK_INTERRUPTIBLE);
-
if (!timeo) {
err = -EINPROGRESS;
break;
@@ -510,12 +509,13 @@ int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
release_sock(sk);
timeo = schedule_timeout(timeo);
lock_sock(sk);
+ set_current_state(TASK_INTERRUPTIBLE);
err = sock_error(sk);
if (err)
break;
}
- set_current_state(TASK_RUNNING);
+ __set_current_state(TASK_RUNNING);
remove_wait_queue(sk_sleep(sk), &wait);
return err;
}
--
1.7.4.1