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 D4365C001E0 for ; Mon, 24 Jul 2023 01:50:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232885AbjGXBuI (ORCPT ); Sun, 23 Jul 2023 21:50:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53948 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233383AbjGXBtQ (ORCPT ); Sun, 23 Jul 2023 21:49:16 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D602B6E9A; Sun, 23 Jul 2023 18:41:20 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5701F6104E; Mon, 24 Jul 2023 01:34:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7084FC433CA; Mon, 24 Jul 2023 01:34:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1690162489; bh=p/kXK0oG2oy8tHU0cEq30EV2AblklY6LbKFSx0eTQfk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LP+sr/N1OWQsmxZvffVUJaNo1eSR+9Hh5YFb+hAT8RgaykOiQDneWu1Lxn29LaFHr EPO77QyLToRpFC3y5XHJfcQQR6AkcZVzPjI8s9f9dSImScr2R5SgWArsVOQnA8sG55 gpcxs+XgzTEd4V2U4B+btROtpuv+LkwStFBHJ92tCLxtLcQjI9m7zZoHMBf3Nff2yf ItChGW8ZZ8Ss0gyfbZcxNoe1zc0/qkJ/CPUvEB6cdG3ftB1r/WasGgiwvXh0WFBWHx Ao3xa+GL2MSgR6w2/pgb66H55GHCV5p2fPwWCmrDa5XMIDM4WrN1C9We8K+sLDOGNt VzFsrDyxqWcAA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Hans Verkuil , Yunfei Dong , Mauro Carvalho Chehab , Sasha Levin , minghsiu.tsai@mediatek.com, houlong.wei@mediatek.com, andrew-ct.chen@mediatek.com, tiffany.lin@mediatek.com, matthias.bgg@gmail.com, linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH AUTOSEL 4.19 2/9] media: platform: mediatek: vpu: fix NULL ptr dereference Date: Sun, 23 Jul 2023 21:34:38 -0400 Message-Id: <20230724013445.2334326-2-sashal@kernel.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230724013445.2334326-1-sashal@kernel.org> References: <20230724013445.2334326-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-stable-base: Linux 4.19.288 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Hans Verkuil [ Upstream commit 3df55cd773e8603b623425cc97b05e542854ad27 ] If pdev is NULL, then it is still dereferenced. This fixes this smatch warning: drivers/media/platform/mediatek/vpu/mtk_vpu.c:570 vpu_load_firmware() warn: address of NULL pointer 'pdev' Signed-off-by: Hans Verkuil Cc: Yunfei Dong Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/mtk-vpu/mtk_vpu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/media/platform/mtk-vpu/mtk_vpu.c b/drivers/media/platform/mtk-vpu/mtk_vpu.c index 9b57fb2857285..46ec1f2699aa7 100644 --- a/drivers/media/platform/mtk-vpu/mtk_vpu.c +++ b/drivers/media/platform/mtk-vpu/mtk_vpu.c @@ -537,16 +537,18 @@ static int load_requested_vpu(struct mtk_vpu *vpu, int vpu_load_firmware(struct platform_device *pdev) { struct mtk_vpu *vpu; - struct device *dev = &pdev->dev; + struct device *dev; struct vpu_run *run; const struct firmware *vpu_fw = NULL; int ret; if (!pdev) { - dev_err(dev, "VPU platform device is invalid\n"); + pr_err("VPU platform device is invalid\n"); return -EINVAL; } + dev = &pdev->dev; + vpu = platform_get_drvdata(pdev); run = &vpu->run; -- 2.39.2