Patch "leds/led-class: Add missing put_device()" has been added to the 4.1-stable tree

Patch "leds/led-class: Add missing put_device()" has been added to the 4.1-stable tree

[gregkh]

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

    leds/led-class: Add missing put_device()

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:
     leds-led-class-add-missing-put_device.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 <stable@vger.kernel.org> know about it.


>From e5b5a61fcb3743f1dacf9e20d28f48423cecf0c1 Mon Sep 17 00:00:00 2001
From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Date: Fri, 31 Jul 2015 13:36:21 +0200
Subject: leds/led-class: Add missing put_device()

From: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>

commit e5b5a61fcb3743f1dacf9e20d28f48423cecf0c1 upstream.

Devices found by class_find_device must be freed with put_device().
Otherwise the reference count will not work properly.

Fixes: a96aa64cb572 ("leds/led-class: Handle LEDs with the same name")
Reported-by: Alan Tull <delicious.quinoa@gmail.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/leds/led-class.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -223,12 +223,15 @@ static int led_classdev_next_name(const
 {
 	unsigned int i = 0;
 	int ret = 0;
+	struct device *dev;
 
 	strlcpy(name, init_name, len);
 
-	while (class_find_device(leds_class, NULL, name, match_name) &&
-	       (ret < len))
+	while ((ret < len) &&
+	       (dev = class_find_device(leds_class, NULL, name, match_name))) {
+		put_device(dev);
 		ret = snprintf(name, len, "%s_%u", init_name, ++i);
+	}
 
 	if (ret >= len)
 		return -ENOMEM;


Patches currently in stable-queue which might be from ricardo.ribalda@gmail.com are

queue-4.1/leds-led-class-add-missing-put_device.patch