From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D7AB1C433F5 for ; Mon, 24 Jan 2022 22:32:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1588459AbiAXWc2 (ORCPT ); Mon, 24 Jan 2022 17:32:28 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1456551AbiAXVjb (ORCPT ); Mon, 24 Jan 2022 16:39:31 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94069C0417CA; Mon, 24 Jan 2022 12:25:03 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 4F2B0B810BD; Mon, 24 Jan 2022 20:25:02 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7908BC340E5; Mon, 24 Jan 2022 20:25:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643055901; bh=38QJKayBH1t+mBmsiqgcjzBj6O8WHMCZs2mmLV6jwwU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u/2h1AcQtXpIyc8T1IC/WPoYeqNkIk7/tb6bR+8Vjp8fxJa9/PYzB/LKR/K9X80gL HAA4tcQbweXs4vxPqhrXkegCURwCT/+PUIv0crMzNZXrYDLyO3BFBo1vi8/OWdLSDj s9B6/zaKHrEQs+0kdL8zyMP2TaYOHpTIFSPP1TWk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiasheng Jiang , Sebastian Reichel , Sasha Levin Subject: [PATCH 5.15 304/846] power: reset: mt6397: Check for null res pointer Date: Mon, 24 Jan 2022 19:37:01 +0100 Message-Id: <20220124184111.391081587@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124184100.867127425@linuxfoundation.org> References: <20220124184100.867127425@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jiasheng Jiang [ Upstream commit 1c1348bf056dee665760a3bd1cd30b0be7554fc2 ] The return value of platform_get_resource() needs to be checked. To avoid use of error pointer in case that there is no suitable resource. Fixes: d28c74c10751 ("power: reset: add driver for mt6323 poweroff") Signed-off-by: Jiasheng Jiang Signed-off-by: Sebastian Reichel Signed-off-by: Sasha Levin --- drivers/power/reset/mt6323-poweroff.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/power/reset/mt6323-poweroff.c b/drivers/power/reset/mt6323-poweroff.c index 0532803e6cbc4..d90e76fcb9383 100644 --- a/drivers/power/reset/mt6323-poweroff.c +++ b/drivers/power/reset/mt6323-poweroff.c @@ -57,6 +57,9 @@ static int mt6323_pwrc_probe(struct platform_device *pdev) return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) + return -EINVAL; + pwrc->base = res->start; pwrc->regmap = mt6397_chip->regmap; pwrc->dev = &pdev->dev; -- 2.34.1