Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753453AbcLGHJv (ORCPT ); Wed, 7 Dec 2016 02:09:51 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:58340 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752165AbcLGHJt (ORCPT ); Wed, 7 Dec 2016 02:09:49 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Johan Hovold , Thierry Reding Subject: [PATCH 4.8 28/35] pwm: Fix device reference leak Date: Wed, 7 Dec 2016 08:08:44 +0100 Message-Id: <20161207070723.826816630@linuxfoundation.org> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161207070722.410336250@linuxfoundation.org> References: <20161207070722.410336250@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 915 Lines: 33 4.8-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold 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 Signed-off-by: Thierry Reding Signed-off-by: Greg Kroah-Hartman --- 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)