From patchwork Mon Jan 11 16:47:15 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 8006841 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id C42329F32E for ; Mon, 11 Jan 2016 16:49:54 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F34FC2010B for ; Mon, 11 Jan 2016 16:49:53 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CB8102020F for ; Mon, 11 Jan 2016 16:49:52 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aIfdz-00069i-2K; Mon, 11 Jan 2016 16:48:35 +0000 Received: from lists.s-osg.org ([54.187.51.154]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aIfdv-0005qf-BM for linux-arm-kernel@lists.infradead.org; Mon, 11 Jan 2016 16:48:32 +0000 Received: from minerva.localdomain (unknown [200.3.249.195]) by lists.s-osg.org (Postfix) with ESMTPSA id 772604632A; Mon, 11 Jan 2016 08:48:08 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Subject: [PATCH v2 7/8] [media] exynos4-is: Check v4l2_of_parse_endpoint() return value Date: Mon, 11 Jan 2016 13:47:15 -0300 Message-Id: <1452530844-30609-8-git-send-email-javier@osg.samsung.com> X-Mailer: git-send-email 2.4.3 In-Reply-To: <1452530844-30609-1-git-send-email-javier@osg.samsung.com> References: <1452530844-30609-1-git-send-email-javier@osg.samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160111_084831_484334_3529578D X-CRM114-Status: GOOD ( 10.56 ) X-Spam-Score: -1.9 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Krzysztof Kozlowski , linux-samsung-soc@vger.kernel.org, Mauro Carvalho Chehab , Javier Martinez Canillas , Kyungmin Park , Kukjin Kim , Sylwester Nawrocki , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The v4l2_of_parse_endpoint() function can fail so check the return value. Signed-off-by: Javier Martinez Canillas Acked-by: Sakari Ailus --- Changes in v2: None drivers/media/platform/exynos4-is/media-dev.c | 8 +++++++- drivers/media/platform/exynos4-is/mipi-csis.c | 10 +++++++--- 2 files changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/exynos4-is/media-dev.c b/drivers/media/platform/exynos4-is/media-dev.c index f3b2dd30ec77..662d4a5c584e 100644 --- a/drivers/media/platform/exynos4-is/media-dev.c +++ b/drivers/media/platform/exynos4-is/media-dev.c @@ -332,13 +332,19 @@ static int fimc_md_parse_port_node(struct fimc_md *fmd, struct fimc_source_info *pd = &fmd->sensor[index].pdata; struct device_node *rem, *ep, *np; struct v4l2_of_endpoint endpoint; + int ret; /* Assume here a port node can have only one endpoint node. */ ep = of_get_next_child(port, NULL); if (!ep) return 0; - v4l2_of_parse_endpoint(ep, &endpoint); + ret = v4l2_of_parse_endpoint(ep, &endpoint); + if (ret) { + of_node_put(ep); + return ret; + } + if (WARN_ON(endpoint.base.port == 0) || index >= FIMC_MAX_SENSORS) return -EINVAL; diff --git a/drivers/media/platform/exynos4-is/mipi-csis.c b/drivers/media/platform/exynos4-is/mipi-csis.c index ac5e50e595be..bd5c46c3d4b7 100644 --- a/drivers/media/platform/exynos4-is/mipi-csis.c +++ b/drivers/media/platform/exynos4-is/mipi-csis.c @@ -736,6 +736,7 @@ static int s5pcsis_parse_dt(struct platform_device *pdev, { struct device_node *node = pdev->dev.of_node; struct v4l2_of_endpoint endpoint; + int ret; if (of_property_read_u32(node, "clock-frequency", &state->clk_frequency)) @@ -751,7 +752,9 @@ static int s5pcsis_parse_dt(struct platform_device *pdev, return -EINVAL; } /* Get port node and validate MIPI-CSI channel id. */ - v4l2_of_parse_endpoint(node, &endpoint); + ret = v4l2_of_parse_endpoint(node, &endpoint); + if (ret) + goto err; state->index = endpoint.base.port - FIMC_INPUT_MIPI_CSI2_0; if (state->index >= CSIS_MAX_ENTITIES) @@ -764,9 +767,10 @@ static int s5pcsis_parse_dt(struct platform_device *pdev, "samsung,csis-wclk"); state->num_lanes = endpoint.bus.mipi_csi2.num_data_lanes; - of_node_put(node); - return 0; +err: + of_node_put(node); + return ret; } static int s5pcsis_pm_resume(struct device *dev, bool runtime);