[3.16.y-ckt stable] Patch "gpio: sysfs: fix memory leak in gpiod_sysfs_set_active_low" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    gpio: sysfs: fix memory leak in gpiod_sysfs_set_active_low

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt7.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From 12c9708ebb1eec1698d87db775276b95de9b0e3f Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan at kernel.org>
Date: Mon, 26 Jan 2015 12:02:46 +0100
Subject: gpio: sysfs: fix memory leak in gpiod_sysfs_set_active_low

commit 49d2ca84e433dab854c7a866bc6add09cfab682d upstream.

Fix memory leak in the gpio sysfs interface due to failure to drop
reference to device returned by class_find_device when setting the
gpio-line polarity.

Fixes: 0769746183ca ("gpiolib: add support for changing value polarity
in sysfs")
Signed-off-by: Johan Hovold <johan at kernel.org>
Signed-off-by: Linus Walleij <linus.walleij at linaro.org>
[ luis: backported to 3.16:
  - file rename: drivers/gpio/gpiolib-sysfs.c -> drivers/gpio/gpiolib.c ]
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 drivers/gpio/gpiolib.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 69fc2fcfc3e9..afdca5a6b2a6 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -960,6 +960,7 @@ int gpiod_sysfs_set_active_low(struct gpio_desc *desc, int value)

 	status = sysfs_set_active_low(desc, dev, value);

+	put_device(dev);
 unlock:
 	mutex_unlock(&sysfs_lock);

--
2.1.4