Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754486AbdC1OPZ (ORCPT ); Tue, 28 Mar 2017 10:15:25 -0400 Received: from mx0b-001ae601.pphosted.com ([67.231.152.168]:40529 "EHLO mx0b-001ae601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752414AbdC1OOj (ORCPT ); Tue, 28 Mar 2017 10:14:39 -0400 Authentication-Results: ppops.net; spf=none smtp.mailfrom=ckeepax@opensource.wolfsonmicro.com From: Charles Keepax To: CC: , , , , , , , Subject: [PATCH v2 1/8] regulator: arizona-micsupp: Avoid potential memory leak reading init_data Date: Tue, 28 Mar 2017 15:14:37 +0100 Message-ID: <1490710484-25277-1-git-send-email-ckeepax@opensource.wolfsonmicro.com> X-Mailer: git-send-email 2.1.4 MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1703280124 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1818 Lines: 51 The device argument passed to of_get_regulator_init_data is used to do some devres memory allocation. Currently the driver passes the MFD device pointer to this function, this could result in the init_data allocation being leaked if the regulator is unbound but the MFD isn't. Correct this issue by correctly passing the local platform device. Signed-off-by: Charles Keepax --- New patch in the series since v1. drivers/regulator/arizona-micsupp.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/regulator/arizona-micsupp.c b/drivers/regulator/arizona-micsupp.c index 22bd714..5e38861 100644 --- a/drivers/regulator/arizona-micsupp.c +++ b/drivers/regulator/arizona-micsupp.c @@ -199,7 +199,8 @@ static const struct regulator_init_data arizona_micsupp_ext_default = { .num_consumer_supplies = 1, }; -static int arizona_micsupp_of_get_pdata(struct arizona *arizona, +static int arizona_micsupp_of_get_pdata(struct device *dev, + struct arizona *arizona, struct regulator_config *config, const struct regulator_desc *desc) { @@ -213,7 +214,7 @@ static int arizona_micsupp_of_get_pdata(struct arizona *arizona, if (np) { config->of_node = np; - init_data = of_get_regulator_init_data(arizona->dev, np, desc); + init_data = of_get_regulator_init_data(dev, np, desc); if (init_data) { init_data->consumer_supplies = &micsupp->supply; @@ -268,8 +269,8 @@ static int arizona_micsupp_probe(struct platform_device *pdev) if (IS_ENABLED(CONFIG_OF)) { if (!dev_get_platdata(arizona->dev)) { - ret = arizona_micsupp_of_get_pdata(arizona, &config, - desc); + ret = arizona_micsupp_of_get_pdata(&pdev->dev, arizona, + &config, desc); if (ret < 0) return ret; } -- 2.1.4