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From: Jiri Slaby <jslaby@suse.cz>
To: stable@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, Johan Hovold <johan@kernel.org>,
	Thierry Reding <thierry.reding@gmail.com>,
	Jiri Slaby <jslaby@suse.cz>
Subject: [PATCH 3.12 24/38] pwm: Fix device reference leak
Date: Tue, 13 Dec 2016 20:52:50 +0100	[thread overview]
Message-ID: <3f198a91125faa59f80b68901947b5522fda7bb3.1481658746.git.jslaby@suse.cz> (raw)
In-Reply-To: <15034b96ec06ee859b67c6cd4e3be569a4ef286b.1481658746.git.jslaby@suse.cz>
In-Reply-To: <cover.1481658746.git.jslaby@suse.cz>

From: Johan Hovold <johan@kernel.org>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

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: Jiri Slaby <jslaby@suse.cz>
---
 drivers/pwm/sysfs.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pwm/sysfs.c b/drivers/pwm/sysfs.c
index 809b5ab9074c..60d74a666c62 100644
--- a/drivers/pwm/sysfs.c
+++ b/drivers/pwm/sysfs.c
@@ -364,6 +364,8 @@ void pwmchip_sysfs_unexport_children(struct pwm_chip *chip)
 		if (test_bit(PWMF_EXPORTED, &pwm->flags))
 			pwm_unexport_child(parent, pwm);
 	}
+
+	put_device(parent);
 }
 
 static int __init pwm_sysfs_init(void)
-- 
2.11.0

  parent reply	other threads:[~2016-12-13 19:56 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20161213195251epcas5p33cd25dd883c71a35fd9cdec0b8e8254a@epcas5p3.samsung.com>
2016-12-13 19:52 ` [PATCH 3.12 00/38] 3.12.69-stable review Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 01/38] x86/idle: Restore trace_cpu_idle to mwait_idle() calls Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 02/38] PCI: Fix devfn for VPD access through function 0 Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 03/38] PCI: Use function 0 VPD for identical functions, regular VPD for others Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 04/38] i2c: at91: fix write transfers by clearing pending interrupt first Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 05/38] mtd: blkdevs: fix potential deadlock + lockdep warnings Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 06/38] kernel/panic.c: turn off locks debug before releasing console lock Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 07/38] tty: audit: Fix audit source Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 08/38] Revert "drivers/net: Disable UFO through virtio" Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 09/38] KVM: x86: drop error recovery in em_jmp_far and em_ret_far Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 10/38] usb: chipidea: move the lock initialization to core file Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 11/38] USB: serial: cp210x: add ID for the Zone DPMX Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 12/38] USB: serial: ftdi_sio: add support for TI CC3200 LaunchPad Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 13/38] Fix USB CB/CBI storage devices with CONFIG_VMAP_STACK=y Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 14/38] scsi: mpt3sas: Fix secure erase premature termination Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 15/38] tile: avoid using clocksource_cyc2ns with absolute cycle count Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 16/38] cfg80211: limit scan results cache size Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 17/38] apparmor: fix change_hat not finding hat after policy replacement Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 18/38] mpi: Fix NULL ptr dereference in mpi_powm() [ver #3] Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 19/38] drm/radeon: Ensure vblank interrupt is enabled on DPMS transition to on Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 20/38] x86/traps: Ignore high word of regs->cs in early_fixup_exception() Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 21/38] rcu: Fix soft lockup for rcu_nocb_kthread Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 22/38] PCI: Export pcie_find_root_port Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 23/38] mwifiex: printk() overflow with 32-byte SSIDs Jiri Slaby
2016-12-13 19:52   ` Jiri Slaby [this message]
2016-12-13 19:52   ` [PATCH 3.12 25/38] ipv6: Set skb->protocol properly for local output Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 26/38] ipv4: " Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 27/38] ALSA: pcm : Call kill_fasync() in stream lock Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 28/38] ip6_tunnel: disable caching when the traffic class is inherited Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 29/38] net: sky2: Fix shutdown crash Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 30/38] l2tp: fix racy SOCK_ZAPPED flag check in l2tp_ip{,6}_bind() Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 31/38] net/sched: pedit: make sure that offset is valid Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 32/38] net/dccp: fix use-after-free in dccp_invalid_packet Jiri Slaby
2016-12-13 19:52   ` [PATCH 3.12 33/38] packet: fix race condition in packet_set_ring Jiri Slaby
2016-12-13 19:53   ` [PATCH 3.12 34/38] net: avoid signed overflows for SO_{SND|RCV}BUFFORCE Jiri Slaby
2016-12-13 19:53   ` [PATCH 3.12 35/38] net: ping: check minimum size on ICMP header length Jiri Slaby
2016-12-13 19:53   ` [PATCH 3.12 36/38] sparc32: Fix inverted invalid_frame_pointer checks on sigreturns Jiri Slaby
2016-12-13 19:53   ` [PATCH 3.12 37/38] sparc64: Fix find_node warning if numa node cannot be found Jiri Slaby
2016-12-13 19:53   ` [PATCH 3.12 38/38] sparc64: fix compile warning section mismatch in find_node() Jiri Slaby
2016-12-14  0:51   ` [PATCH 3.12 00/38] 3.12.69-stable review Shuah Khan
2016-12-17  9:10     ` Jiri Slaby
2016-12-14  3:42   ` Guenter Roeck

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