From: Peter Hurley <peter@hurleysoftware.com>
Date: Sun, 24 Jul 2011 04:11:07 +0000 (-0400)
Subject: Bluetooth: bnep: Fix lost wakeup of session thread
X-Git-Tag: next-20110802~28^2~6
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=999e0498a3f56eba32aa5ef527f483110855b3a7;p=karo-tx-linux.git

Bluetooth: bnep: 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>
---

diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index dfadb65012d2..eb8486fc4b83 100644
--- a/net/bluetooth/bnep/core.c
+++ b/net/bluetooth/bnep/core.c
@@ -484,9 +484,11 @@ static int bnep_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;
 		/* RX */
 		while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
 			skb_orphan(skb);
@@ -507,7 +509,7 @@ static int bnep_session(void *arg)
 
 		schedule();
 	}
-	set_current_state(TASK_RUNNING);
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(sk), &wait);
 
 	/* Cleanup session */