From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755603AbdEESjh (ORCPT ); Fri, 5 May 2017 14:39:37 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:58910 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754745AbdEESeN (ORCPT ); Fri, 5 May 2017 14:34:13 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Seung-Woo Kim , Mark Brown , Amit Pundir Subject: [PATCH 3.18 38/68] regulator: core: Fix regualtor_ena_gpio_free not to access pin after freeing Date: Fri, 5 May 2017 11:32:23 -0700 Message-Id: <20170505183214.125218546@linuxfoundation.org> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20170505183212.587141964@linuxfoundation.org> References: <20170505183212.587141964@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 3.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Seung-Woo Kim commit 60a2362f769cf549dc466134efe71c8bf9fbaaba upstream. After freeing pin from regulator_ena_gpio_free, loop can access the pin. So this patch fixes not to access pin after freeing. Signed-off-by: Seung-Woo Kim Signed-off-by: Mark Brown Signed-off-by: Amit Pundir Signed-off-by: Greg Kroah-Hartman --- drivers/regulator/core.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1720,6 +1720,8 @@ static void regulator_ena_gpio_free(stru gpiod_put(pin->gpiod); list_del(&pin->list); kfree(pin); + rdev->ena_pin = NULL; + return; } else { pin->request_count--; }