[Bluetooth] Make more functions static

This patch makes another bunch of functions static.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 2104586..e42d728 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -171,4 +171,10 @@
 
 int bt_err(__u16 code);
 
+extern int hci_sock_init(void);
+extern int hci_sock_cleanup(void);
+
+extern int bt_sysfs_init(void);
+extern void bt_sysfs_cleanup(void);
+
 #endif /* __BLUETOOTH_H */
diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 12b4334..0353206 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -308,12 +308,6 @@
 	.create	= bt_sock_create,
 };
 
-extern int hci_sock_init(void);
-extern int hci_sock_cleanup(void);
-
-extern int bt_sysfs_init(void);
-extern int bt_sysfs_cleanup(void);
-
 static int __init bt_init(void)
 {
 	BT_INFO("Core ver %s", VERSION);
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 55dc42e..cf0df1c 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -87,7 +87,7 @@
 	return notifier_chain_unregister(&hci_notifier, nb);
 }
 
-void hci_notify(struct hci_dev *hdev, int event)
+static void hci_notify(struct hci_dev *hdev, int event)
 {
 	notifier_call_chain(&hci_notifier, event, hdev);
 }
@@ -1347,7 +1347,7 @@
 	kfree_skb(skb);
 }
 
-void hci_rx_task(unsigned long arg)
+static void hci_rx_task(unsigned long arg)
 {
 	struct hci_dev *hdev = (struct hci_dev *) arg;
 	struct sk_buff *skb;