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Bluetooth: cmtp: Fix lost wakeup of session thread 

Fix race condition which can result in missing the wakeup intended
to stop the session thread.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
This commit is contained in:
Peter Hurley 2011-07-24 00:11:10 -04:00 committed by Gustavo F. Padovan
parent 38d5755561
commit 3a3f5c7df5
1 changed files with 4 additions and 2 deletions
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6
net/bluetooth/cmtp/core.c
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@ -292,9 +292,11 @@ static int cmtp_session(void *arg)
init_waitqueue_entry(&wait, current);
add_wait_queue(sk_sleep(sk), &wait);
while (!kthread_should_stop()) {
while (1) {
set_current_state(TASK_INTERRUPTIBLE);
if (kthread_should_stop())
break;
if (sk->sk_state != BT_CONNECTED)
break;
@ -307,7 +309,7 @@ static int cmtp_session(void *arg)
schedule();
}
set_current_state(TASK_RUNNING);
__set_current_state(TASK_RUNNING);
remove_wait_queue(sk_sleep(sk), &wait);
down_write(&cmtp_session_sem);