From: Johan Hovold <johan@kernel.org>
Date: Wed, 13 Jun 2018 15:08:59 +0000 (+0200)
Subject: serdev: fix memleak on module unload
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bc6cf3669d22371f573ab0305b3abf13887c0786;p=openwrt%2Fstaging%2Fblogic.git

serdev: fix memleak on module unload

Make sure to free all resources associated with the ida on module
exit.

Fixes: cd6484e1830b ("serdev: Introduce new bus for serial attached devices")
Cc: stable <stable@vger.kernel.org>	# 4.11
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index df93b727e984..9e59f4788589 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -617,6 +617,7 @@ EXPORT_SYMBOL_GPL(__serdev_device_driver_register);
 static void __exit serdev_exit(void)
 {
 	bus_unregister(&serdev_bus_type);
+	ida_destroy(&ctrl_ida);
 }
 module_exit(serdev_exit);