From patchwork Thu Jun 6 02:37:04 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yang Yingliang X-Patchwork-Id: 1944407 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45d1:ec00::1; helo=ny.mirrors.kernel.org; envelope-from=linux-gpio+bounces-7210-incoming=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from ny.mirrors.kernel.org (ny.mirrors.kernel.org [IPv6:2604:1380:45d1:ec00::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4VvpTR0ptGz20Q6 for ; Thu, 6 Jun 2024 12:40:11 +1000 (AEST) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id F2A8F1C2171A for ; Thu, 6 Jun 2024 02:39:52 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 51E9E199B9; Thu, 6 Jun 2024 02:39:49 +0000 (UTC) X-Original-To: linux-gpio@vger.kernel.org Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B63231B285 for ; Thu, 6 Jun 2024 02:39:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717641589; cv=none; b=d5DR4ICne887Khq3YMfW8zmz9YPbYtIgufQxqA2fK1zxbH4ZHHYZTJSH/8qOtpnmLcWMkCU+nZx5eo3BDkyyOQNYbjvRvb6Lf8XOqbzTpBHnKLv5MrM2g9uHC5UZo5YYXYyHApBoIzQJOtjPEwqNCkmTE3+S/j1dQgBy7od8DbY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717641589; c=relaxed/simple; bh=DHpacmr+1+C1jw2cfTs7qg1owQWJx+BzIC9c0gbL28Y=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=VLz43mJAdlxWjommE259I4GWfYHny6UJGlWf41q7wQ6iOu0lLL53r5FP9NzvLNr1YVYmhTPmQpxhboXogkWJV1q42b7mN11sRSHJm+cr1xYM7a/scGnz1jjl2+xhiK2M84xj3RcBOJxk7DaEN5ZLUjbh8WFK4ZC/7lsNc7tSRh8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.252]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4VvpNL4XzzzwRV1; Thu, 6 Jun 2024 10:35:46 +0800 (CST) Received: from dggpemm100019.china.huawei.com (unknown [7.185.36.251]) by mail.maildlp.com (Postfix) with ESMTPS id 1B41D18006D; Thu, 6 Jun 2024 10:39:44 +0800 (CST) Received: from dggpemm500007.china.huawei.com (7.185.36.183) by dggpemm100019.china.huawei.com (7.185.36.251) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 6 Jun 2024 10:39:43 +0800 Received: from huawei.com (10.175.103.91) by dggpemm500007.china.huawei.com (7.185.36.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 6 Jun 2024 10:39:43 +0800 From: Yang Yingliang To: CC: , , , , , Subject: [PATCH v2 3/3] pinctrl: ti: ti-iodelay: fix possible memory leak when pinctrl_enable() fails Date: Thu, 6 Jun 2024 10:37:04 +0800 Message-ID: <20240606023704.3931561-4-yangyingliang@huawei.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240606023704.3931561-1-yangyingliang@huawei.com> References: <20240606023704.3931561-1-yangyingliang@huawei.com> Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpemm500007.china.huawei.com (7.185.36.183) This driver calls pinctrl_register_and_init() which is not devm_ managed, it will leads memory leak if pinctrl_enable() fails. Replace it with devm_pinctrl_register_and_init(). And add missing of_node_put() in the error path. Fixes: 5038a66dad01 ("pinctrl: core: delete incorrect free in pinctrl_enable()") Signed-off-by: Yang Yingliang --- drivers/pinctrl/ti/pinctrl-ti-iodelay.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/pinctrl/ti/pinctrl-ti-iodelay.c b/drivers/pinctrl/ti/pinctrl-ti-iodelay.c index 040f2c46a868..ef9758638501 100644 --- a/drivers/pinctrl/ti/pinctrl-ti-iodelay.c +++ b/drivers/pinctrl/ti/pinctrl-ti-iodelay.c @@ -876,7 +876,7 @@ static int ti_iodelay_probe(struct platform_device *pdev) iod->desc.name = dev_name(dev); iod->desc.owner = THIS_MODULE; - ret = pinctrl_register_and_init(&iod->desc, dev, iod, &iod->pctl); + ret = devm_pinctrl_register_and_init(dev, &iod->desc, iod, &iod->pctl); if (ret) { dev_err(dev, "Failed to register pinctrl\n"); goto exit_out; @@ -884,7 +884,11 @@ static int ti_iodelay_probe(struct platform_device *pdev) platform_set_drvdata(pdev, iod); - return pinctrl_enable(iod->pctl); + ret = pinctrl_enable(iod->pctl); + if (ret) + goto exit_out; + + return 0; exit_out: of_node_put(np); @@ -899,9 +903,6 @@ static void ti_iodelay_remove(struct platform_device *pdev) { struct ti_iodelay_device *iod = platform_get_drvdata(pdev); - if (iod->pctl) - pinctrl_unregister(iod->pctl); - ti_iodelay_pinconf_deinit_dev(iod); /* Expect other allocations to be freed by devm */