Patch "USB: serial: Destroy serial_minors IDR on module exit" has been added to the 4.1-stable tree

This is a note to let you know that I've just added the patch titled

USB: serial: Destroy serial_minors IDR on module exit

to the 4.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
usb-serial-destroy-serial_minors-idr-on-module-exit.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Johannes Thumshirn <[email protected]>
Date: Wed, 8 Jul 2015 17:26:37 +0200
Subject: USB: serial: Destroy serial_minors IDR on module exit

From: Johannes Thumshirn <[email protected]>

commit d23f47d4927fd2f61b3a754d83c7bcec215b5cfe upstream.

Destroy serial_minors IDR on module exit, reclaiming the allocated memory.

This was detected by the following semantic patch (written by Luis Rodriguez <[email protected]>)

<SmPL>
@ defines_module_init @
declarer name module_init, module_exit;
declarer name DEFINE_IDR;
identifier init;
@@

module_init(init);

@ defines_module_exit @
identifier exit;
@@

module_exit(exit);

@ declares_idr depends on defines_module_init && defines_module_exit @ identifier idr;
@@

DEFINE_IDR(idr);

@ on_exit_calls_destroy depends on declares_idr && defines_module_exit @ identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
...
idr_destroy(&idr);
...
}

@ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @ identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
...
+idr_destroy(&idr);
}
</SmPL>

---
 drivers/usb/serial/usb-serial.c |    1 +
 1 file changed, 1 insertion(+)

@@ -1306,6 +1306,7 @@ static void __exit usb_serial_exit(void)
 	tty_unregister_driver(usb_serial_tty_driver);
 	put_tty_driver(usb_serial_tty_driver);
 	bus_unregister(&usb_serial_bus_type);
+	idr_destroy(&serial_minors);
 }
 
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/usb-serial-destroy-serial_minors-idr-on-module-exit.patch