linux-kernel - [PATCH 4.17 15/46] serdev: fix memleak on module unload

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Message-Id: <20180706054525.333116824@linuxfoundation.org>
Date:   Fri,  6 Jul 2018 07:46:36 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Johan Hovold <johan@...nel.org>
Subject: [PATCH 4.17 15/46] serdev: fix memleak on module unload

4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johan Hovold <johan@...nel.org>

commit bc6cf3669d22371f573ab0305b3abf13887c0786 upstream.

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@...r.kernel.org>	# 4.11
Signed-off-by: Johan Hovold <johan@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/tty/serdev/core.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -617,6 +617,7 @@ EXPORT_SYMBOL_GPL(__serdev_device_driver
 static void __exit serdev_exit(void)
 {
 	bus_unregister(&serdev_bus_type);
+	ida_destroy(&ctrl_ida);
 }
 module_exit(serdev_exit);