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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C9573C433F5 for ; Mon, 17 Jan 2022 17:18:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8Pmw/QhKcCgEnjcmtajooq5jGbahYYgAo3F1FsWb/34=; b=ktZc01JtaghKRC 9UEx70D2LLdvEcwLTq8zPZCo7f6peAoPfc69kK/yaoQa8lDnq5SIjfmomXTRldlYY/mKheOMP2kv+ zKLNF2rmp30iG8f+CRV7FH7u9iGMnTrFOm7/WOA1TjIGPOTUJeZg+JvcH/jlYWfpvtsHg0abvJGWV bUm5MWEcIF83gbVxrc/HBkOkVvnViB/TE89YR3QISgeoIOLOTvwB01+2b+Hf1MlFgJ5+nfzlzraOk 6JrnFidC4BlAgIW8ULiU/A+TUuirW6s7ybUH08bT5v+NpdvaHGHvPzB1hnRZ8aV3K0GgySZ8u9joi 9DccqetlO92gUBGtoyXQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9Vcc-00Fot2-LQ; Mon, 17 Jan 2022 17:16:48 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n9VR6-00FiXz-IC; Mon, 17 Jan 2022 17:04:54 +0000 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 44FC0B81148; Mon, 17 Jan 2022 17:04:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B5206C36AEF; Mon, 17 Jan 2022 17:04:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642439090; bh=zqxVLJAQDSMqLlm3O2uF0y8g2XadcjGY1EzyOllkM8s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=aLlbxPOEs1E77MUZyICq9PH5P18U2qgG8emlrxLq51MwhTYGuuwMnsMHYjxxV4KHD MrC9qsgEy3ID+HNTt94e0ZByeWRqolFDZCuP/upFPN2kg0M9mSbuLas1HoUum2tbQu qwjc4DCRi676H3qtz4YQguuWSTHCExhtY5Llzss5U4IP8sZhxqn07l/a/HSJi6+oji /i5C3DNJFw9f5FwkGqQpxDGFy3A7tdQFZfD4CbHl98mqKSqpGdKNMrajFHi3+PgIfo LSx0TZqvICHydMn7ciBfSv6d0qO0b1QXaYnYPdYQuiFge3M6eZHS2rrlDxhXOsqRlu UHBhWEnHYqYuw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Miaoqian Lin , AngeloGioacchino Del Regno , Vinod Koul , Sasha Levin , chunkuang.hu@kernel.org, p.zabel@pengutronix.de, airlied@linux.ie, daniel@ffwll.ch, matthias.bgg@gmail.com, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.10 33/34] phy: mediatek: Fix missing check in mtk_mipi_tx_probe Date: Mon, 17 Jan 2022 12:03:23 -0500 Message-Id: <20220117170326.1471712-33-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220117170326.1471712-1-sashal@kernel.org> References: <20220117170326.1471712-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220117_090452_778767_E05A44C0 X-CRM114-Status: GOOD ( 11.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Miaoqian Lin [ Upstream commit 399c91c3f30531593e5ff6ca7b53f47092128669 ] The of_device_get_match_data() function may return NULL. Add check to prevent potential null dereference. Signed-off-by: Miaoqian Lin Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20211224082103.7658-1-linmq006@gmail.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_mipi_tx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c index 8cee2591e7284..ccc742dc78bd9 100644 --- a/drivers/gpu/drm/mediatek/mtk_mipi_tx.c +++ b/drivers/gpu/drm/mediatek/mtk_mipi_tx.c @@ -147,6 +147,8 @@ static int mtk_mipi_tx_probe(struct platform_device *pdev) return -ENOMEM; mipi_tx->driver_data = of_device_get_match_data(dev); + if (!mipi_tx->driver_data) + return -ENODEV; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); mipi_tx->regs = devm_ioremap_resource(dev, mem); -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel