[Bluetooth] Handle return values from driver core functions

Some return values of the driver core register and create functions
are not handled and so might cause unexpected problems.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 989b22d9042e..c7e079d3c486 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -242,10 +242,14 @@ static void add_conn(void *data)
         struct hci_conn *conn = data;
         int i;
 
-        device_register(&conn->dev);
+        if (device_register(&conn->dev) < 0) {
+                BT_ERR("Failed to register connection device");
+                return;
+        }
 
         for (i = 0; conn_attrs[i]; i++)
-                device_create_file(&conn->dev, conn_attrs[i]);
+                if (device_create_file(&conn->dev, conn_attrs[i]) < 0)
+                        BT_ERR("Failed to create connection attribute");
 }
 
 void hci_conn_add_sysfs(struct hci_conn *conn)
@@ -312,7 +316,8 @@ int hci_register_sysfs(struct hci_dev *hdev)
                 return err;
 
         for (i = 0; bt_attrs[i]; i++)
-                device_create_file(dev, bt_attrs[i]);
+                if (device_create_file(dev, bt_attrs[i]) < 0)
+                        BT_ERR("Failed to create device attribute");
 
         return 0;
 }