Patch "pwm: Fix device reference leak" has been added to the 4.8-stable tree

Patch "pwm: Fix device reference leak" has been added to the 4.8-stable tree

[gregkh]

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

    pwm: Fix device reference leak

to the 4.8-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:
     pwm-fix-device-reference-leak.patch
and it can be found in the queue-4.8 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 0e1614ac84f1719d87bed577963bb8140d0c9ce8 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan@kernel.org>
Date: Tue, 1 Nov 2016 11:46:39 +0100
Subject: pwm: Fix device reference leak

From: Johan Hovold <johan@kernel.org>

commit 0e1614ac84f1719d87bed577963bb8140d0c9ce8 upstream.

Make sure to drop the reference to the parent device taken by
class_find_device() after "unexporting" any children when deregistering
a PWM chip.

Fixes: 0733424c9ba9 ("pwm: Unexport children before chip removal")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/pwm/sysfs.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -425,6 +425,8 @@ void pwmchip_sysfs_unexport_children(str
 		if (test_bit(PWMF_EXPORTED, &pwm->flags))
 			pwm_unexport_child(parent, pwm);
 	}
+
+	put_device(parent);
 }
 
 static int __init pwm_sysfs_init(void)


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

queue-4.8/pwm-fix-device-reference-leak.patch