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[BLUETOOTH] rfcomm_worker(): fix wakeup race

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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>
This commit is contained in:
Andrew Morton 2007-04-26 01:41:01 -07:00 committed by David S. Miller
parent 9198d2220d
commit 74da9d88bf
1 changed files with 2 additions and 2 deletions
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4
net/bluetooth/rfcomm/core.c
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@ -1851,18 +1851,18 @@ static void rfcomm_worker(void)
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;
}