Merge branch 'v3.1-rc10' into for-3.2/core

Conflicts:
	block/blk-core.c
	include/linux/blkdev.h

Signed-off-by: Jens Axboe <axboe@kernel.dk>

14 files changed, 102 insertions, 95 deletions

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 8add9b4..117e0d1 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -494,9 +494,8 @@ int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
 	BT_DBG("sk %p", sk);
 
 	add_wait_queue(sk_sleep(sk), &wait);
+	set_current_state(TASK_INTERRUPTIBLE);
 	while (sk->sk_state != state) {
-		set_current_state(TASK_INTERRUPTIBLE);
-
 		if (!timeo) {
 			err = -EINPROGRESS;
 			break;
@@ -510,12 +509,13 @@ int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo)
 		release_sock(sk);
 		timeo = schedule_timeout(timeo);
 		lock_sock(sk);
+		set_current_state(TASK_INTERRUPTIBLE);
 
 		err = sock_error(sk);
 		if (err)
 			break;
 	}
-	set_current_state(TASK_RUNNING);
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(sk), &wait);
 	return err;
 }
diff --git a/net/bluetooth/bnep/bnep.h b/net/bluetooth/bnep/bnep.h
index 8e6c061..e7ee531 100644
--- a/net/bluetooth/bnep/bnep.h
+++ b/net/bluetooth/bnep/bnep.h
@@ -155,6 +155,7 @@ struct bnep_session {
 	unsigned int  role;
 	unsigned long state;
 	unsigned long flags;
+	atomic_t      terminate;
 	struct task_struct *task;
 
 	struct ethhdr eh;
diff --git a/net/bluetooth/bnep/core.c b/net/bluetooth/bnep/core.c
index ca39fcf..d9edfe8 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 (atomic_read(&s->terminate))
+			break;
 		/* RX */
 		while ((skb = skb_dequeue(&sk->sk_receive_queue))) {
 			skb_orphan(skb);
@@ -504,7 +506,7 @@ 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 */
@@ -640,9 +642,10 @@ int bnep_del_connection(struct bnep_conndel_req *req)
 	down_read(&bnep_session_sem);
 
 	s = __bnep_get_session(req->dst);
-	if (s)
-		kthread_stop(s->task);
-	else
+	if (s) {
+		atomic_inc(&s->terminate);
+		wake_up_process(s->task);
+	} else
 		err = -ENOENT;
 
 	up_read(&bnep_session_sem);
diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c
index 040f67b..50f0d13 100644
--- a/net/bluetooth/cmtp/capi.c
+++ b/net/bluetooth/cmtp/capi.c
@@ -386,7 +386,8 @@ static void cmtp_reset_ctr(struct capi_ctr *ctrl)
 
 	capi_ctr_down(ctrl);
 
-	kthread_stop(session->task);
+	atomic_inc(&session->terminate);
+	wake_up_process(session->task);
 }
 
 static void cmtp_register_appl(struct capi_ctr *ctrl, __u16 appl, capi_register_params *rp)
diff --git a/net/bluetooth/cmtp/cmtp.h b/net/bluetooth/cmtp/cmtp.h
index db43b54..c32638d 100644
--- a/net/bluetooth/cmtp/cmtp.h
+++ b/net/bluetooth/cmtp/cmtp.h
@@ -81,6 +81,7 @@ struct cmtp_session {
 
 	char name[BTNAMSIZ];
 
+	atomic_t terminate;
 	struct task_struct *task;
 
 	wait_queue_head_t wait;
diff --git a/net/bluetooth/cmtp/core.c b/net/bluetooth/cmtp/core.c
index c5b11af..521baa4 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 (atomic_read(&session->terminate))
+			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);
@@ -380,16 +382,17 @@ int cmtp_add_connection(struct cmtp_connadd_req *req, struct socket *sock)
 
 	if (!(session->flags & (1 << CMTP_LOOPBACK))) {
 		err = cmtp_attach_device(session);
-		if (err < 0)
-			goto detach;
+		if (err < 0) {
+			atomic_inc(&session->terminate);
+			wake_up_process(session->task);
+			up_write(&cmtp_session_sem);
+			return err;
+		}
 	}
 
 	up_write(&cmtp_session_sem);
 	return 0;
 
-detach:
-	cmtp_detach_device(session);
-
 unlink:
 	__cmtp_unlink_session(session);
 
@@ -414,7 +417,8 @@ int cmtp_del_connection(struct cmtp_conndel_req *req)
 		skb_queue_purge(&session->transmit);
 
 		/* Stop session thread */
-		kthread_stop(session->task);
+		atomic_inc(&session->terminate);
+		wake_up_process(session->task);
 	} else
 		err = -ENOENT;
 
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index ec0bc3f..56943ad 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1209,7 +1209,6 @@ static void hci_cmd_timer(unsigned long arg)
 
 	BT_ERR("%s command tx timeout", hdev->name);
 	atomic_set(&hdev->cmd_cnt, 1);
-	clear_bit(HCI_RESET, &hdev->flags);
 	tasklet_schedule(&hdev->cmd_task);
 }
 
@@ -1327,7 +1326,7 @@ int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr)
 
 	entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
 	if (!entry) {
-		return -ENOMEM;
+		err = -ENOMEM;
 		goto err;
 	}
 
@@ -2408,7 +2407,10 @@ static void hci_cmd_task(unsigned long arg)
 		if (hdev->sent_cmd) {
 			atomic_dec(&hdev->cmd_cnt);
 			hci_send_frame(skb);
-			mod_timer(&hdev->cmd_timer,
+			if (test_bit(HCI_RESET, &hdev->flags))
+				del_timer(&hdev->cmd_timer);
+			else
+				mod_timer(&hdev->cmd_timer,
 				  jiffies + msecs_to_jiffies(HCI_CMD_TIMEOUT));
 		} else {
 			skb_queue_head(&hdev->cmd_q, skb);
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index a40170e..7ef4eb4 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -58,8 +58,8 @@ static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb)
 	if (status)
 		return;
 
-	if (test_bit(HCI_MGMT, &hdev->flags) &&
-				test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
+	if (test_and_clear_bit(HCI_INQUIRY, &hdev->flags) &&
+			test_bit(HCI_MGMT, &hdev->flags))
 		mgmt_discovering(hdev->id, 0);
 
 	hci_req_complete(hdev, HCI_OP_INQUIRY_CANCEL, status);
@@ -76,8 +76,8 @@ static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb)
 	if (status)
 		return;
 
-	if (test_bit(HCI_MGMT, &hdev->flags) &&
-				test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
+	if (test_and_clear_bit(HCI_INQUIRY, &hdev->flags) &&
+				test_bit(HCI_MGMT, &hdev->flags))
 		mgmt_discovering(hdev->id, 0);
 
 	hci_conn_check_pending(hdev);
@@ -959,9 +959,8 @@ static inline void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
 		return;
 	}
 
-	if (test_bit(HCI_MGMT, &hdev->flags) &&
-					!test_and_set_bit(HCI_INQUIRY,
-							&hdev->flags))
+	if (!test_and_set_bit(HCI_INQUIRY, &hdev->flags) &&
+				test_bit(HCI_MGMT, &hdev->flags))
 		mgmt_discovering(hdev->id, 1);
 }
 
@@ -1340,8 +1339,8 @@ static inline void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff
 
 	BT_DBG("%s status %d", hdev->name, status);
 
-	if (test_bit(HCI_MGMT, &hdev->flags) &&
-				test_and_clear_bit(HCI_INQUIRY, &hdev->flags))
+	if (test_and_clear_bit(HCI_INQUIRY, &hdev->flags) &&
+				test_bit(HCI_MGMT, &hdev->flags))
 		mgmt_discovering(hdev->id, 0);
 
 	hci_req_complete(hdev, HCI_OP_INQUIRY, status);
diff --git a/net/bluetooth/hidp/core.c b/net/bluetooth/hidp/core.c
index 43b4c2d..fb68f34 100644
--- a/net/bluetooth/hidp/core.c
+++ b/net/bluetooth/hidp/core.c
@@ -764,6 +764,7 @@ static int hidp_session(void *arg)
 
 	up_write(&hidp_session_sem);
 
+	kfree(session->rd_data);
 	kfree(session);
 	return 0;
 }
@@ -841,7 +842,8 @@ static int hidp_setup_input(struct hidp_session *session,
 
 	err = input_register_device(input);
 	if (err < 0) {
-		hci_conn_put_device(session->conn);
+		input_free_device(input);
+		session->input = NULL;
 		return err;
 	}
 
@@ -1044,8 +1046,12 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
 	}
 
 	err = hid_add_device(session->hid);
-	if (err < 0)
-		goto err_add_device;
+	if (err < 0) {
+		atomic_inc(&session->terminate);
+		wake_up_process(session->task);
+		up_write(&hidp_session_sem);
+		return err;
+	}
 
 	if (session->input) {
 		hidp_send_ctrl_message(session,
@@ -1059,12 +1065,6 @@ int hidp_add_connection(struct hidp_connadd_req *req, struct socket *ctrl_sock,
 	up_write(&hidp_session_sem);
 	return 0;
 
-err_add_device:
-	hid_destroy_device(session->hid);
-	session->hid = NULL;
-	atomic_inc(&session->terminate);
-	wake_up_process(session->task);
-
 unlink:
 	hidp_del_timer(session);
 
@@ -1090,7 +1090,6 @@ purge:
 failed:
 	up_write(&hidp_session_sem);
 
-	input_free_device(session->input);
 	kfree(session);
 	return err;
 }
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 3204ba8..b3bdb48 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -1159,9 +1159,8 @@ int __l2cap_wait_ack(struct sock *sk)
 	int timeo = HZ/5;
 
 	add_wait_queue(sk_sleep(sk), &wait);
-	while ((chan->unacked_frames > 0 && chan->conn)) {
-		set_current_state(TASK_INTERRUPTIBLE);
-
+	set_current_state(TASK_INTERRUPTIBLE);
+	while (chan->unacked_frames > 0 && chan->conn) {
 		if (!timeo)
 			timeo = HZ/5;
 
@@ -1173,6 +1172,7 @@ int __l2cap_wait_ack(struct sock *sk)
 		release_sock(sk);
 		timeo = schedule_timeout(timeo);
 		lock_sock(sk);
+		set_current_state(TASK_INTERRUPTIBLE);
 
 		err = sock_error(sk);
 		if (err)
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 5c36b3e..61f1f62 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -235,30 +235,26 @@ static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int fl
 
 	lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
 
-	if (sk->sk_state != BT_LISTEN) {
-		err = -EBADFD;
-		goto done;
-	}
-
 	timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
 
 	BT_DBG("sk %p timeo %ld", sk, timeo);
 
 	/* Wait for an incoming connection. (wake-one). */
 	add_wait_queue_exclusive(sk_sleep(sk), &wait);
-	while (!(nsk = bt_accept_dequeue(sk, newsock))) {
+	while (1) {
 		set_current_state(TASK_INTERRUPTIBLE);
-		if (!timeo) {
-			err = -EAGAIN;
+
+		if (sk->sk_state != BT_LISTEN) {
+			err = -EBADFD;
 			break;
 		}
 
-		release_sock(sk);
-		timeo = schedule_timeout(timeo);
-		lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
+		nsk = bt_accept_dequeue(sk, newsock);
+		if (nsk)
+			break;
 
-		if (sk->sk_state != BT_LISTEN) {
-			err = -EBADFD;
+		if (!timeo) {
+			err = -EAGAIN;
 			break;
 		}
 
@@ -266,8 +262,12 @@ static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int fl
 			err = sock_intr_errno(timeo);
 			break;
 		}
+
+		release_sock(sk);
+		timeo = schedule_timeout(timeo);
+		lock_sock_nested(sk, SINGLE_DEPTH_NESTING);
 	}
-	set_current_state(TASK_RUNNING);
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(sk), &wait);
 
 	if (err)
@@ -993,7 +993,7 @@ static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int p
 	INIT_LIST_HEAD(&bt_sk(sk)->accept_q);
 
 	sk->sk_destruct = l2cap_sock_destruct;
-	sk->sk_sndtimeo = msecs_to_jiffies(L2CAP_CONN_TIMEOUT);
+	sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT;
 
 	sock_reset_flag(sk, SOCK_ZAPPED);
 
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 5759bb7..5ba3f6d 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -62,7 +62,6 @@ static DEFINE_MUTEX(rfcomm_mutex);
 #define rfcomm_lock()	mutex_lock(&rfcomm_mutex)
 #define rfcomm_unlock()	mutex_unlock(&rfcomm_mutex)
 
-static unsigned long rfcomm_event;
 
 static LIST_HEAD(session_list);
 
@@ -120,7 +119,6 @@ static inline void rfcomm_schedule(void)
 {
 	if (!rfcomm_thread)
 		return;
-	set_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
 	wake_up_process(rfcomm_thread);
 }
 
@@ -2038,19 +2036,18 @@ static int rfcomm_run(void *unused)
 
 	rfcomm_add_listener(BDADDR_ANY);
 
-	while (!kthread_should_stop()) {
+	while (1) {
 		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. */
-			schedule();
-		}
-		set_current_state(TASK_RUNNING);
+
+		if (kthread_should_stop())
+			break;
 
 		/* Process stuff */
-		clear_bit(RFCOMM_SCHED_WAKEUP, &rfcomm_event);
 		rfcomm_process_sessions();
+
+		schedule();
 	}
+	__set_current_state(TASK_RUNNING);
 
 	rfcomm_kill_listener();
 
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 8f01e6b..482722b 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -485,11 +485,6 @@ static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int f
 
 	lock_sock(sk);
 
-	if (sk->sk_state != BT_LISTEN) {
-		err = -EBADFD;
-		goto done;
-	}
-
 	if (sk->sk_type != SOCK_STREAM) {
 		err = -EINVAL;
 		goto done;
@@ -501,19 +496,20 @@ static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int f
 
 	/* Wait for an incoming connection. (wake-one). */
 	add_wait_queue_exclusive(sk_sleep(sk), &wait);
-	while (!(nsk = bt_accept_dequeue(sk, newsock))) {
+	while (1) {
 		set_current_state(TASK_INTERRUPTIBLE);
-		if (!timeo) {
-			err = -EAGAIN;
+
+		if (sk->sk_state != BT_LISTEN) {
+			err = -EBADFD;
 			break;
 		}
 
-		release_sock(sk);
-		timeo = schedule_timeout(timeo);
-		lock_sock(sk);
+		nsk = bt_accept_dequeue(sk, newsock);
+		if (nsk)
+			break;
 
-		if (sk->sk_state != BT_LISTEN) {
-			err = -EBADFD;
+		if (!timeo) {
+			err = -EAGAIN;
 			break;
 		}
 
@@ -521,8 +517,12 @@ static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int f
 			err = sock_intr_errno(timeo);
 			break;
 		}
+
+		release_sock(sk);
+		timeo = schedule_timeout(timeo);
+		lock_sock(sk);
 	}
-	set_current_state(TASK_RUNNING);
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(sk), &wait);
 
 	if (err)
diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index 4c3621b..8270f05 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -564,30 +564,26 @@ static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flag
 
 	lock_sock(sk);
 
-	if (sk->sk_state != BT_LISTEN) {
-		err = -EBADFD;
-		goto done;
-	}
-
 	timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK);
 
 	BT_DBG("sk %p timeo %ld", sk, timeo);
 
 	/* Wait for an incoming connection. (wake-one). */
 	add_wait_queue_exclusive(sk_sleep(sk), &wait);
-	while (!(ch = bt_accept_dequeue(sk, newsock))) {
+	while (1) {
 		set_current_state(TASK_INTERRUPTIBLE);
-		if (!timeo) {
-			err = -EAGAIN;
+
+		if (sk->sk_state != BT_LISTEN) {
+			err = -EBADFD;
 			break;
 		}
 
-		release_sock(sk);
-		timeo = schedule_timeout(timeo);
-		lock_sock(sk);
+		ch = bt_accept_dequeue(sk, newsock);
+		if (ch)
+			break;
 
-		if (sk->sk_state != BT_LISTEN) {
-			err = -EBADFD;
+		if (!timeo) {
+			err = -EAGAIN;
 			break;
 		}
 
@@ -595,8 +591,12 @@ static int sco_sock_accept(struct socket *sock, struct socket *newsock, int flag
 			err = sock_intr_errno(timeo);
 			break;
 		}
+
+		release_sock(sk);
+		timeo = schedule_timeout(timeo);
+		lock_sock(sk);
 	}
-	set_current_state(TASK_RUNNING);
+	__set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(sk), &wait);
 
 	if (err)