[BLUETOOTH] rfcomm_worker(): fix wakeup race
Set TASK_INTERRUPTIBLE prior to testing the flag to avoid missed wakeups.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 10cc13cf..fe7df90 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1851,18 +1851,18 @@
BT_DBG("");
while (!atomic_read(&terminate)) {
+ set_current_state(TASK_INTERRUPTIBLE);
if (!test_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event)) {
/* No pending events. Let's sleep.
* Incoming connections and data will wake us up. */
- set_current_state(TASK_INTERRUPTIBLE);
schedule();
}
+ set_current_state(TASK_RUNNING);
/* Process stuff */
clear_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
rfcomm_process_sessions();
}
- set_current_state(TASK_RUNNING);
return;
}