summaryrefslogtreecommitdiffstats
path: root/net/bluetooth/af_bluetooth.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/bluetooth/af_bluetooth.c')
-rw-r--r--net/bluetooth/af_bluetooth.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 9096137c889c..c600631cd19e 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -525,6 +525,46 @@ int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
}
EXPORT_SYMBOL(bt_sock_wait_state);
+/* This function expects the sk lock to be held when called */
+int bt_sock_wait_ready(struct sock *sk, unsigned long flags)
+{
+ DECLARE_WAITQUEUE(wait, current);
+ unsigned long timeo;
+ int err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ timeo = sock_sndtimeo(sk, flags & O_NONBLOCK);
+
+ add_wait_queue(sk_sleep(sk), &wait);
+ set_current_state(TASK_INTERRUPTIBLE);
+ while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) {
+ if (!timeo) {
+ err = -EAGAIN;
+ break;
+ }
+
+ if (signal_pending(current)) {
+ err = sock_intr_errno(timeo);
+ break;
+ }
+
+ 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);
+ remove_wait_queue(sk_sleep(sk), &wait);
+
+ return err;
+}
+EXPORT_SYMBOL(bt_sock_wait_ready);
+
#ifdef CONFIG_PROC_FS
struct bt_seq_state {
struct bt_sock_list *l;