Bluetooth: uart-ldisc: Fix memory leak and remove destruct cb
We currently leak the hci_uart object if HCI_UART_PROTO_SET is never set
because the hci-destruct callback will then never be called. This fix
removes the hci-destruct callback and frees the driver internal private
hci_uart object directly on tty-close. We call hci_unregister_dev() here
so the hci-core will never call our callbacks again (except destruct).
Therefore, we can safely free the driver internal data right away and
set the destruct callback to NULL.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c
index 48ad2a7..5ea49df 100644
--- a/drivers/bluetooth/hci_ldisc.c
+++ b/drivers/bluetooth/hci_ldisc.c
@@ -231,15 +231,6 @@
return 0;
}
-static void hci_uart_destruct(struct hci_dev *hdev)
-{
- if (!hdev)
- return;
-
- BT_DBG("%s", hdev->name);
- kfree(hdev->driver_data);
-}
-
/* ------ LDISC part ------ */
/* hci_uart_tty_open
*
@@ -316,6 +307,8 @@
hci_free_dev(hdev);
}
}
+
+ kfree(hu);
}
}
@@ -397,7 +390,6 @@
hdev->close = hci_uart_close;
hdev->flush = hci_uart_flush;
hdev->send = hci_uart_send_frame;
- hdev->destruct = hci_uart_destruct;
hdev->parent = hu->tty->dev;
hdev->owner = THIS_MODULE;