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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 6D96DC43219 for ; Sat, 27 Apr 2019 01:47:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3D73321537 for ; Sat, 27 Apr 2019 01:47:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556329630; bh=QypnheLrEVToZO/cyeOfNpSVZs8B/ZNjP86kQ2KnB/E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=CcIuQG+KhUxSn2r8obbDNvk2/wZTqh5lJTWgHKR+1fio8o41T8TsOyjA0M0y5XSiI UlLQD2qHL7vy9REESf0kFm+XWnkXn9JUj6Ofse6T+bHwaNXlIGXMsmsX1hVT9U+JD9 0VdOn6NGzb2MQTMMzZkeTFKhHLEVWWmzTBASYO5E= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728993AbfD0BrJ (ORCPT ); Fri, 26 Apr 2019 21:47:09 -0400 Received: from mail.kernel.org ([198.145.29.99]:47260 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728710AbfD0BnH (ORCPT ); Fri, 26 Apr 2019 21:43:07 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 81AFB21537; Sat, 27 Apr 2019 01:43:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1556329386; bh=QypnheLrEVToZO/cyeOfNpSVZs8B/ZNjP86kQ2KnB/E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FSb8ESYqja6SDFOHMcRXCVCKc9/IN3YnLVCg78gLxC3rzmyuHaPWZal80OMPB22aE kmfiokazw8NOrsRbvk2phvG8fFBQVqCrm4vNWtBBacvTisPRU1U+n/dZh5IfCD3ALl EcOde3x55sadq56gfwbaCG9JwHn9sw29EkduYZLw= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Wen Yang , CK Hu , Philipp Zabel , David Airlie , Daniel Vetter , Matthias Brugger , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Sasha Levin Subject: [PATCH AUTOSEL 4.14 23/32] drm/mediatek: fix possible object reference leak Date: Fri, 26 Apr 2019 21:42:14 -0400 Message-Id: <20190427014224.8274-23-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190427014224.8274-1-sashal@kernel.org> References: <20190427014224.8274-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wen Yang [ Upstream commit 2ae2c3316fb77dcf64275d011596b60104c45426 ] The call to of_parse_phandle returns a node pointer with refcount incremented thus it must be explicitly decremented after the last usage. Detected by coccinelle with the following warnings: drivers/gpu/drm/mediatek/mtk_hdmi.c:1521:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1509, but without a corresponding object release within this function. drivers/gpu/drm/mediatek/mtk_hdmi.c:1524:1-7: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 1509, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: CK Hu Cc: Philipp Zabel Cc: David Airlie Cc: Daniel Vetter Cc: Matthias Brugger Cc: dri-devel@lists.freedesktop.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: CK Hu Signed-off-by: Sasha Levin --- drivers/gpu/drm/mediatek/mtk_hdmi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi.c b/drivers/gpu/drm/mediatek/mtk_hdmi.c index a33a1918463d..3c69c73fbd47 100644 --- a/drivers/gpu/drm/mediatek/mtk_hdmi.c +++ b/drivers/gpu/drm/mediatek/mtk_hdmi.c @@ -1508,6 +1508,7 @@ static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, of_node_put(remote); hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); + of_node_put(i2c_np); if (!hdmi->ddc_adpt) { dev_err(dev, "Failed to get ddc i2c adapter by node\n"); return -EINVAL; -- 2.19.1