From patchwork Thu May 12 11:59:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaoqian Lin X-Patchwork-Id: 12847621 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 7D1B9C433FE for ; Thu, 12 May 2022 11:59:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353482AbiELL7Y (ORCPT ); Thu, 12 May 2022 07:59:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40318 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344488AbiELL7Y (ORCPT ); Thu, 12 May 2022 07:59:24 -0400 Received: from mail-pl1-x632.google.com (mail-pl1-x632.google.com [IPv6:2607:f8b0:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5004D219C03; Thu, 12 May 2022 04:59:23 -0700 (PDT) Received: by mail-pl1-x632.google.com with SMTP id m12so4653211plb.4; Thu, 12 May 2022 04:59:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=a/Jq44xoX1PX4n3n8Vf2G0RTQLdM4u3R8vUUYgDiB04=; b=mlMqYveSz/+4qyhU7Gn2t3oWFvyH+LSNhqreDHRhYlwIHWqahZCFudIHWm6Ja6shfJ l6FeEnF5N+f7cfpHAwyX2D2A6Im2Xst2Vt0KatDULbUJMvR/gjU0p6whZWNLymtnRqdg XpenVROQ7O74LbOF/JN8z421V3oYlvmaPamURNP0qMVllMgrdgR7WQx0k1yzliiAGDc/ cu1N8Oiya9M7Ouij7ORwpMcmR5valH7ZFw2ufqvt0khJMMvqGuQBiA299NVzlEwNymzT Fmu3DKnijVF6aP7k4Dbi0eWKnD7hm4SYQVcNLVueHvuwGkD28M55+CTWIy3+s1oDCUFV sAVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=a/Jq44xoX1PX4n3n8Vf2G0RTQLdM4u3R8vUUYgDiB04=; b=QnMJ/W3QTQfW+6vqQYOVc/11LauENffY3wfmXCnClxvZ447ojY+kO+Ts8DqvKjOAqN w5Z9J6POpse/wEGYyCnvLoSjRDu6ofdG7fbZ6QWR6t3CQ1QhX90fPLuIOLtG9fucFRmq fG0iVNWsvPCPOZZkSKzR7cSE3A3leFkwFDPY6cg49cGulcjwFvGehEziwSXO2FUDQliE kFir4DB5AiNLaf6GEQV7Oc5QM5nf96LZwtU/ZOSx7crVxx1Lz8lJJbhAfUEQQTNF+gdI UJJFz1IENqlPd3TZ/0MYbF3Nomv626dOJwtj1BMrAikLgYNA+nHnKq3C6WM7MC75+F/8 2SKg== X-Gm-Message-State: AOAM533IFhe8YGy9VAdQMIg5d32mgvWEh+hpbD8sNzpTNPrrRcUJQVbB dQGLqEaFyGq3hVnmrLeS8qo= X-Google-Smtp-Source: ABdhPJxUkdcERAaY6EHXM+YWGl5OJizIGEsi9bYKgIcAV4R0PZrxLengDsUUSp2cSZor8m+omxbfVQ== X-Received: by 2002:a17:902:7445:b0:15f:2eb6:2c3d with SMTP id e5-20020a170902744500b0015f2eb62c3dmr9432973plt.132.1652356762826; Thu, 12 May 2022 04:59:22 -0700 (PDT) Received: from localhost.localdomain ([202.120.234.246]) by smtp.googlemail.com with ESMTPSA id k34-20020a635a62000000b003c14af5063esm1653594pgm.86.2022.05.12.04.59.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 May 2022 04:59:22 -0700 (PDT) From: Miaoqian Lin To: Russell King , Helge Deller , Miaoqian Lin , Pawel Moll , Tomi Valkeinen , linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH] video: fbdev: Fix refcount leak in clcdfb_of_vram_setup Date: Thu, 12 May 2022 15:59:08 +0400 Message-Id: <20220512115913.48685-1-linmq006@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-fbdev@vger.kernel.org of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak. Fixes: d10715be03bd ("video: ARM CLCD: Add DT support") Signed-off-by: Miaoqian Lin --- drivers/video/fbdev/amba-clcd.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c index 9ec969e136bf..8080116aea84 100644 --- a/drivers/video/fbdev/amba-clcd.c +++ b/drivers/video/fbdev/amba-clcd.c @@ -758,12 +758,15 @@ static int clcdfb_of_vram_setup(struct clcd_fb *fb) return -ENODEV; fb->fb.screen_base = of_iomap(memory, 0); - if (!fb->fb.screen_base) + if (!fb->fb.screen_base) { + of_node_put(memory); return -ENOMEM; + } fb->fb.fix.smem_start = of_translate_address(memory, of_get_address(memory, 0, &size, NULL)); fb->fb.fix.smem_len = size; + of_node_put(memory); return 0; }