From patchwork Thu May 12 09:21:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaoqian Lin X-Patchwork-Id: 12847417 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 00A1FC433F5 for ; Thu, 12 May 2022 09:22:34 +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: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:In-Reply-To:References: List-Owner; bh=CHqz2it67Nnl1LOLnpITBE4RL77nPnLMiqRjpClwzoc=; b=x0hbc/8TeA5nnz o9uS1Xt6jEf5Gyec/jdShczTh50mk7mAujXuQsHGyLw4e2bbgwijmfW4auCu0nk/8rTheJf5zI7xx WKeR4EZsuotsbOx8ZWOC19h+d4ltTu47BNwrwQ/YutcSNkPRCzpcKIS0Pnb7eCqofOoD3d5Pe0iRT q7nD1Wm/5fxxOz80Q1gxNLB0E+MVZFUMpNDYZVGeVBLB9dQ3PsVuIJGwATUSJnDSdLjzyi7PV4zvy 9H4FO74VTcwD1jHs64KMmRtaECweWaXszExyHLreOq4PWZujq5hgKXsQJQ6/Kn/yuey9RiBV/pZ9k RfaVvi+zNgsGEtDssPdQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1np50k-00B8hJ-Nt; Thu, 12 May 2022 09:21:30 +0000 Received: from mail-pl1-x629.google.com ([2607:f8b0:4864:20::629]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1np50g-00B8fb-Pk; Thu, 12 May 2022 09:21:28 +0000 Received: by mail-pl1-x629.google.com with SMTP id i1so4316274plg.7; Thu, 12 May 2022 02:21:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=trstv+pRRGZWnVg0+iN5UCLh2DdH9t4IV2sdILAbWVo=; b=KDQhOyYHM/ghyxsyYX2XznPNtfLuxQL/rD+vsMnBO34aYxBsr9ceM9eDUWXAMLJM1g 9qJpLzk42GzZaBZbcgWUjy6LOebVHmF9bqI7MPkd/10lA1bpzvrEX45t8Y33GLQnbz1E 4xjhKznHXiYyv4C74c+8dkaHPGwnM2Xr5nFisIkCTmppBiVXORiPXCaEqfAxG9UA6jiV iL9Ahrh/AabO+F2dHjvO1YsOn69pZxSPvrDoiSdzFVMIhkAU5/Q6mldf5ISJuihXbdN9 8ApW3DsCjYYcUVvQ+vqQFrvDS6DEiNcNP1oYqHta/uiDkShGesbOpsU+nrVUkSoMHASh qtag== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=trstv+pRRGZWnVg0+iN5UCLh2DdH9t4IV2sdILAbWVo=; b=5gS+hMgjIxVmWaD2Ou2h5Llv0hPLh+AX/xvDh1oQqHtb7ewFy3ZDBCXWNHYwzPJbyR d7QYpZ2M47CjlQAghxVH5gUzGTlqlkGPH2bzs2A33roY6ZWW6wfaReshlHEYelErgbPf LRTKdkbd9vagg9IDd50CdfG++Q6lA8F4yWYleXLH4Sj8M5ji1TUuvs7gymeSfGBztIAq jDZ6Gvyof6g1E6IvGzhrxbwBysc55hlABk6bdfu3KPxUxgafZaTJeK06drEGcN4Ny7QM HIkvjY9Kvpt1MiQ6fejZZt5eA128ZalnEEBgOnF6Ia1jj0SXV+v6HnPOO8RXUalm0apy xeKQ== X-Gm-Message-State: AOAM530V6u4kgHg/hbCpV2rn6VW8m8UGmA3qiO2JrBW0/ZBjrZ5lZpnD LLZ9OknWROXB5VswnNnDMzVR/E9YcWSDG7XhliU= X-Google-Smtp-Source: ABdhPJzZwN6t9mhBq0vhDH0XiM6VYuy8GmDZ2wYMYQ05gapLnZQ2or//JNGRUEmvLf3VxVplWrAO8w== X-Received: by 2002:a17:90b:1d82:b0:1dc:ba02:52a0 with SMTP id pf2-20020a17090b1d8200b001dcba0252a0mr9773736pjb.246.1652347284037; Thu, 12 May 2022 02:21:24 -0700 (PDT) Received: from localhost.localdomain ([202.120.234.246]) by smtp.googlemail.com with ESMTPSA id gj9-20020a17090b108900b001cd4989fedfsm1336874pjb.43.2022.05.12.02.21.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 May 2022 02:21:23 -0700 (PDT) From: Miaoqian Lin To: Neil Armstrong , David Airlie , Daniel Vetter , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Sam Ravnborg , dri-devel@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: linmq006@gmail.com Subject: [PATCH] drm/meson: Fix refcount leak in meson_encoder_hdmi_init Date: Thu, 12 May 2022 13:21:13 +0400 Message-Id: <20220512092114.38426-1-linmq006@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220512_022126_892852_D6E3F321 X-CRM114-Status: GOOD ( 12.58 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org of_find_device_by_node() takes a reference to the embedded struct device, we should use put_device() to release it when not need anymore. Add missing put_device() in error path to avoid refcount leak. Fixes: 0af5e0b41110 ("drm/meson: encoder_hdmi: switch to bridge DRM_BRIDGE_ATTACH_NO_CONNECTOR") Signed-off-by: Miaoqian Lin --- drivers/gpu/drm/meson/meson_encoder_hdmi.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/meson/meson_encoder_hdmi.c b/drivers/gpu/drm/meson/meson_encoder_hdmi.c index 5e306de6f485..de87f02cd388 100644 --- a/drivers/gpu/drm/meson/meson_encoder_hdmi.c +++ b/drivers/gpu/drm/meson/meson_encoder_hdmi.c @@ -435,8 +435,10 @@ int meson_encoder_hdmi_init(struct meson_drm *priv) cec_fill_conn_info_from_drm(&conn_info, meson_encoder_hdmi->connector); notifier = cec_notifier_conn_register(&pdev->dev, NULL, &conn_info); - if (!notifier) + if (!notifier) { + put_device(&pdev->dev); return -ENOMEM; + } meson_encoder_hdmi->cec_notifier = notifier; }