From patchwork Fri Aug 30 07:15:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jinjie Ruan X-Patchwork-Id: 13784407 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 AFCF4CA0EE6 for ; Fri, 30 Aug 2024 07:10:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=dJ9z8/PbZAtycLMpPFsv07bIctggBu6cXl7L+wfTExg=; b=QsX8kP0tkIYGMG0QT7Df40rm+G VbmvoRANwUE1UUhz/4PQbEmfKKMNyy/jkfM0f5f7GheDkcu37ldr2TBlxwTXo0uFo+FLYCCgiubbv krydctLy5xoZYHvGujGcFGH63LXPSAJRESTzAaCQ4Y+Bhg9HJYbA6VsFaHxF9iyDBDPOeoR6C9E3E xqzp0EQ8tXwU0K2JRoenklT/5Ehm26goaU3kz+qiH2O92W8kOq5JU7TfhUvZGU6IZeV1okR8sBFI2 NpDafBmux2w8BKze5oWPxQgv5u0RY5Zp7cmfpFWFlZ3ZhHksWEPidICnzeukw0jPyw5am0CiZBLyd fiLa/G2w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sjvlw-000000053wS-2Qht; Fri, 30 Aug 2024 07:10:16 +0000 Received: from szxga03-in.huawei.com ([45.249.212.189]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sjvjc-000000053J5-0X7p; Fri, 30 Aug 2024 07:07:53 +0000 Received: from mail.maildlp.com (unknown [172.19.88.194]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4Ww8HF0LktzQrBy; Fri, 30 Aug 2024 15:02:49 +0800 (CST) Received: from kwepemh500013.china.huawei.com (unknown [7.202.181.146]) by mail.maildlp.com (Postfix) with ESMTPS id D86A8140202; Fri, 30 Aug 2024 15:07:40 +0800 (CST) Received: from huawei.com (10.90.53.73) by kwepemh500013.china.huawei.com (7.202.181.146) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 30 Aug 2024 15:07:40 +0800 From: Jinjie Ruan To: , , , , , , , , , , , , CC: Subject: [PATCH v2] drm/mediatek: Fix missing of_node_put() for mtk_drm_get_all_drm_priv() Date: Fri, 30 Aug 2024 15:15:42 +0800 Message-ID: <20240830071542.3534696-1-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.90.53.73] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemh500013.china.huawei.com (7.202.181.146) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240830_000752_435746_A883D2F7 X-CRM114-Status: UNSURE ( 9.96 ) X-CRM114-Notice: Please train this message. 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 In mtk_drm_get_all_drm_priv(), break in for_each_child_of_node() should call of_node_put() to avoid child node resource leak, fix it. Fixes: d761b9450e31 ("drm/mediatek: Add cnt checking for coverity issue") Signed-off-by: Jinjie Ruan --- v2: - Use of_node_put() to fix it. - Update the commit message. --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index 77b50c56c124..1b1d9930dcde 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -405,8 +405,10 @@ static bool mtk_drm_get_all_drm_priv(struct device *dev) if (temp_drm_priv->mtk_drm_bound) cnt++; - if (cnt == MAX_CRTC) + if (cnt == MAX_CRTC) { + of_node_put(node); break; + } } if (drm_priv->data->mmsys_dev_num == cnt) {