Bluetooth: Create root debugfs directory during module init

Create the root Bluetooth debugfs directory during module init
and remove it on module exit.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

2 files changed, 8 insertions, 9 deletions

diff --git a/net/bluetooth/af_bluetooth.c b/net/bluetooth/af_bluetooth.c
index 1f1a1118f489..f6a1671ea2ff 100644
--- a/net/bluetooth/af_bluetooth.c
+++ b/net/bluetooth/af_bluetooth.c
@@ -25,6 +25,7 @@
 /* Bluetooth address family and sockets. */
 
 #include <linux/module.h>
+#include <linux/debugfs.h>
 #include <asm/ioctls.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -708,12 +709,17 @@ static struct net_proto_family bt_sock_family_ops = {
         .create = bt_sock_create,
 };
 
+struct dentry *bt_debugfs;
+EXPORT_SYMBOL_GPL(bt_debugfs);
+
 static int __init bt_init(void)
 {
         int err;
 
         BT_INFO("Core ver %s", VERSION);
 
+        bt_debugfs = debugfs_create_dir("bluetooth", NULL);
+
         err = bt_sysfs_init();
         if (err < 0)
                 return err;
@@ -754,7 +760,6 @@ error:
 
 static void __exit bt_exit(void)
 {
-
         sco_exit();
 
         l2cap_exit();
@@ -764,6 +769,8 @@ static void __exit bt_exit(void)
         sock_unregister(PF_BLUETOOTH);
 
         bt_sysfs_cleanup();
+
+        debugfs_remove_recursive(bt_debugfs);
 }
 
 subsys_initcall(bt_init);
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 0e71318b0c82..320a76118252 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -1,6 +1,5 @@
 /* Bluetooth HCI driver model support. */
 
-#include <linux/debugfs.h>
 #include <linux/module.h>
 
 #include <net/bluetooth/bluetooth.h>
@@ -8,9 +7,6 @@
 
 static struct class *bt_class;
 
-struct dentry *bt_debugfs;
-EXPORT_SYMBOL_GPL(bt_debugfs);
-
 static inline char *link_typetostr(int type)
 {
         switch (type) {
@@ -426,8 +422,6 @@ void hci_del_sysfs(struct hci_dev *hdev)
 
 int __init bt_sysfs_init(void)
 {
-        bt_debugfs = debugfs_create_dir("bluetooth", NULL);
-
         bt_class = class_create(THIS_MODULE, "bluetooth");
 
         return PTR_ERR_OR_ZERO(bt_class);
@@ -436,6 +430,4 @@ int __init bt_sysfs_init(void)
 void bt_sysfs_cleanup(void)
 {
         class_destroy(bt_class);
-
-        debugfs_remove_recursive(bt_debugfs);
 }