Patch "USB: core: fix device node leak" has been added to the 4.9-stable tree

Patch "USB: core: fix device node leak" has been added to the 4.9-stable tree

[gregkh]

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

    USB: core: fix device node leak

to the 4.9-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-core-fix-device-node-leak.patch
and it can be found in the queue-4.9 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From e271b2c909a22a2c13b2d5f77f2ce0091b74540c Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Tue, 6 Jun 2017 17:58:58 +0200
Subject: USB: core: fix device node leak

From: Johan Hovold <johan@kernel.org>

commit e271b2c909a22a2c13b2d5f77f2ce0091b74540c upstream.

Make sure to release any OF device-node reference taken when creating
the USB device.

Note that we currently do not hold a reference to the root hub
device-tree node (i.e. the parent controller node).

Fixes: 69bec7259853 ("USB: core: let USB device know device node")
Acked-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/usb/core/usb.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -279,6 +279,8 @@ static void usb_release_dev(struct devic
 
 	usb_destroy_configuration(udev);
 	usb_release_bos_descriptor(udev);
+	if (udev->parent)
+		of_node_put(dev->of_node);
 	usb_put_hcd(hcd);
 	kfree(udev->product);
 	kfree(udev->manufacturer);


Patches currently in stable-queue which might be from johan@kernel.org are

queue-4.9/usb-core-fix-device-node-leak.patch
queue-4.9/usb-serial-cp210x-add-id-for-cel-em3588-usb-zigbee-stick.patch