From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Mon, 5 Dec 2016 14:51:41 +0000 (+0100)
Subject: 4.4-stable patches
X-Git-Tag: v4.8.13~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a0d87eb4cf1735e317ab6dcadd98684100e39cef;p=thirdparty%2Fkernel%2Fstable-queue.git

4.4-stable patches

added patches:
	pwm-fix-device-reference-leak.patch
---

diff --git a/queue-4.4/pwm-fix-device-reference-leak.patch b/queue-4.4/pwm-fix-device-reference-leak.patch
new file mode 100644
index 00000000000..f9121215a6a
--- /dev/null
+++ b/queue-4.4/pwm-fix-device-reference-leak.patch
@@ -0,0 +1,33 @@
+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
+@@ -366,6 +366,8 @@ 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)
diff --git a/queue-4.4/series b/queue-4.4/series
index 76e7b50121b..a242114deed 100644
--- a/queue-4.4/series
+++ b/queue-4.4/series
@@ -7,3 +7,4 @@ rcu-fix-soft-lockup-for-rcu_nocb_kthread.patch
 pci-export-pcie_find_root_port.patch
 pci-set-read-completion-boundary-to-128-iff-root-port-supports-it-_hpx.patch
 mwifiex-printk-overflow-with-32-byte-ssids.patch
+pwm-fix-device-reference-leak.patch