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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1F98C4360C for ; Sun, 6 Oct 2019 17:39:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BD1712133F for ; Sun, 6 Oct 2019 17:39:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383585; bh=JJiAr0U+y5fK3GJTz/G2EY+1qfyIBZP/h1D8Vy3Euz4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=smSMjUp+hDQzAslpQkfINL96/Z/ue4hEU4911Eq7SiQBhTIMhiIv2IuYlHZar1Te8 rK7N6iXNoG5LFAiOQG4vWuUnbUpNZKVwXSXjAfUdSFZqEW0n3rXBgObDE2KUItQ+Wg SB4UlfAwamp/lelvZCYnJLiix0k0+GD2cE9ctFGo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730836AbfJFRjo (ORCPT ); Sun, 6 Oct 2019 13:39:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:39170 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730829AbfJFRjm (ORCPT ); Sun, 6 Oct 2019 13:39:42 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 14F132080F; Sun, 6 Oct 2019 17:39:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1570383581; bh=JJiAr0U+y5fK3GJTz/G2EY+1qfyIBZP/h1D8Vy3Euz4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Xv7a+4y8peWBwCQ6mIRjKp5ihLBeSXt5ivc6T9LTKwMiXCaFmXibpy76Mw5nTDsff /tt4MPtlxA/pn43bTa8Na0KjQU0F6s3oH2Bjo2XKILIQxVcwTVg7pXJY9nRANuuLdP BQsVvg4zO624fmuhT46znQ6NSzA18p7Ie0r0RJgw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Linus Walleij , Sasha Levin Subject: [PATCH 5.3 002/166] drm/mcde: Fix uninitialized variable Date: Sun, 6 Oct 2019 19:19:28 +0200 Message-Id: <20191006171213.003375227@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191006171212.850660298@linuxfoundation.org> References: <20191006171212.850660298@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Linus Walleij [ Upstream commit ca5be902a87ddccc88144f2dea21b5f0814391ef ] We need to handle the case when of_drm_find_bridge() returns NULL. Reported-by: Dan Carpenter Acked-by: Dan Carpenter Signed-off-by: Linus Walleij Link: https://patchwork.freedesktop.org/patch/msgid/20190618115245.13915-1-linus.walleij@linaro.org Signed-off-by: Sasha Levin --- drivers/gpu/drm/mcde/mcde_drv.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mcde/mcde_drv.c b/drivers/gpu/drm/mcde/mcde_drv.c index baf63fb6850a4..a810568c76df7 100644 --- a/drivers/gpu/drm/mcde/mcde_drv.c +++ b/drivers/gpu/drm/mcde/mcde_drv.c @@ -319,7 +319,7 @@ static int mcde_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct drm_device *drm; struct mcde *mcde; - struct component_match *match; + struct component_match *match = NULL; struct resource *res; u32 pid; u32 val; @@ -485,6 +485,10 @@ static int mcde_probe(struct platform_device *pdev) } put_device(p); } + if (!match) { + dev_err(dev, "no matching components\n"); + return -ENODEV; + } if (IS_ERR(match)) { dev_err(dev, "could not create component match\n"); ret = PTR_ERR(match); -- 2.20.1