From patchwork Mon May 6 07:05:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wen Yang X-Patchwork-Id: 10930613 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6DFF01390 for ; Mon, 6 May 2019 07:05:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5A9D7285D9 for ; Mon, 6 May 2019 07:05:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4EBF42860A; Mon, 6 May 2019 07:05:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E9511285D9 for ; Mon, 6 May 2019 07:05:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=3IttdnReGjhHktrSFhvx14BEClZDvgZJ6FL8Ea3bv+E=; b=WlEYbN8yYM7ApJ8vK1F6clfaRV nENAt2Xl7B0TdXmexmtOvWETOMOin3uSu+1L8vhooVkQtib7kktv7RAI+pUn/gQ2eixqpCcaj+r0A o72FZpp0vhGjVj8CiTCxOl2VBmOoNV1/WQqBeAIssWcoxc14WpFn0Xs+K6yS4uDSSuQVG33L6OZFB BIHNk3loDWHu1rLVX+++DwN6Qk7wrKaMhJ8SgoUAJIf/nj2h3Q0T5jMVwYLQgLGndiWv701i7Vc4a pH+M5IHQJQViBdJJzVGYennmJgx1ZTqjRyiS8VZAqIWdvvSjSYg5SI6oPSGHWidrcQxYX3ftGz+yE 9Et1tw4w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hNXh6-0000wg-2A; Mon, 06 May 2019 07:05:48 +0000 Received: from mxhk.zte.com.cn ([63.217.80.70]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1hNXh2-000808-13; Mon, 06 May 2019 07:05:45 +0000 Received: from mse-fl1.zte.com.cn (unknown [10.30.14.238]) by Forcepoint Email with ESMTPS id DA82BDDDD39076BBC7BB; Mon, 6 May 2019 15:03:30 +0800 (CST) Received: from notes_smtp.zte.com.cn ([10.30.1.239]) by mse-fl1.zte.com.cn with ESMTP id x4673Q2e021653; Mon, 6 May 2019 15:03:26 +0800 (GMT-8) (envelope-from wen.yang99@zte.com.cn) Received: from fox-host8.localdomain ([10.74.120.8]) by szsmtp06.zte.com.cn (Lotus Domino Release 8.5.3FP6) with ESMTP id 2019050615033055-10027950 ; Mon, 6 May 2019 15:03:30 +0800 From: Wen Yang To: linux-kernel@vger.kernel.org Subject: [PATCH 3/4] media: mtk-vcodec: fix leaked of_node references Date: Mon, 6 May 2019 15:05:17 +0800 Message-Id: <1557126318-21487-4-git-send-email-wen.yang99@zte.com.cn> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1557126318-21487-1-git-send-email-wen.yang99@zte.com.cn> References: <1557126318-21487-1-git-send-email-wen.yang99@zte.com.cn> X-MIMETrack: Itemize by SMTP Server on SZSMTP06/server/zte_ltd(Release 8.5.3FP6|November 21, 2013) at 2019-05-06 15:03:30, Serialize by Router on notes_smtp/zte_ltd(Release 9.0.1FP7|August 17, 2016) at 2019-05-06 15:03:24, Serialize complete at 2019-05-06 15:03:24 X-MAIL: mse-fl1.zte.com.cn x4673Q2e021653 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190506_000544_219980_FCE38139 X-CRM114-Status: GOOD ( 12.82 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: wang.yi59@zte.com.cn, Andrew-CT Chen , Tiffany Lin , linux-mediatek@lists.infradead.org, Matthias Brugger , Mauro Carvalho Chehab , Wen Yang , 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-Virus-Scanned: ClamAV using ClamSMTP The call to of_find_device_by_node 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/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:60:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function. drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:63:2-8: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function. drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c:72:3-9: ERROR: missing of_node_put; acquired a node pointer with refcount incremented on line 38, but without a corresponding object release within this function. Signed-off-by: Wen Yang Cc: Tiffany Lin Cc: Andrew-CT Chen Cc: Mauro Carvalho Chehab Cc: Matthias Brugger Cc: linux-media@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c index 7884465..11c45c5 100644 --- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c +++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c @@ -42,8 +42,8 @@ int mtk_vcodec_init_dec_pm(struct mtk_vcodec_dev *mtkdev) } pdev = of_find_device_by_node(node); + of_node_put(node); if (WARN_ON(!pdev)) { - of_node_put(node); return -1; } pm->larbvdec = &pdev->dev;