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authorPeter Hurley <peter@hurleysoftware.com>2011-07-24 00:10:46 -0400
committerGustavo F. Padovan <padovan@profusion.mobi>2011-08-11 19:50:26 -0300
commit9be4e3fbf2d3603e7a7010ede0697166738a788b (patch)
tree112840ba9fe3d0712531875293d2b3a17a7f6158 /net
parent950e2d51e866623e4c360280aa63b85ab66d3403 (diff)
downloadlinux-linaro-stable-9be4e3fbf2d3603e7a7010ede0697166738a788b.tar.gz
Bluetooth: Fix lost wakeups waiting for sock state change
Fix race conditions which can cause lost wakeups while waiting for sock state to change. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net')
-rw-r--r--net/bluetooth/af_bluetooth.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 8add9b499912..117e0d161780 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;
}