From patchwork Mon Jan 24 18:35:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 535376 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 55DE4C433FE for ; Mon, 24 Jan 2022 21:46:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376735AbiAXVnW (ORCPT ); Mon, 24 Jan 2022 16:43:22 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:33566 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1447749AbiAXVLZ (ORCPT ); Mon, 24 Jan 2022 16:11:25 -0500 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 dfw.source.kernel.org (Postfix) with ESMTPS id 261EC61469; Mon, 24 Jan 2022 21:11:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D338C340E5; Mon, 24 Jan 2022 21:11:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643058684; bh=38QJKayBH1t+mBmsiqgcjzBj6O8WHMCZs2mmLV6jwwU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=waw/eDPTsH/Chl2wRlToDbxGqaLUHbiBBcd2COlRECu4qNNLeD/d1xV68vuUTdhDd ukPhJ1Hvvd5e4Fvh+skoXhfmj0uO2R9+rVf49d395WjrYCha4tgmQ2RsfYw3LZjJ68 FM54uUd8UWyOgXZOiaeeLg9s0shdFmAgw5qnoOGc= 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 5.16 0367/1039] power: reset: mt6397: Check for null res pointer Date: Mon, 24 Jan 2022 19:35:56 +0100 Message-Id: <20220124184137.630019912@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124184125.121143506@linuxfoundation.org> References: <20220124184125.121143506@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@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;