Bluetooth: Create debugfs directory for each connection handle

For every internal representation of a Bluetooth connection which is
identified by hci_conn, create a debugfs directory with the handle
number as directory name.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 4405fb3..75240aa 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -25,6 +25,7 @@
 /* Bluetooth HCI connection handling. */
 
 #include <linux/export.h>
+#include <linux/debugfs.h>
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
@@ -547,6 +548,8 @@
 
 	hci_conn_del_sysfs(conn);
 
+	debugfs_remove_recursive(conn->debugfs);
+
 	if (test_bit(HCI_CONN_PARAM_REMOVAL_PEND, &conn->flags))
 		hci_conn_params_del(conn->hdev, &conn->dst, conn->dst_type);