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>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index c5b11af908b..2eb854ab10f 100644
--- a/net/bluetooth/cmtp/core.c
+++ b/net/bluetooth/cmtp/core.c
@@ -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);