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=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 8821DC4338F for ; Tue, 10 Aug 2021 14:17:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6DB70611C9 for ; Tue, 10 Aug 2021 14:17:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242945AbhHJOR3 (ORCPT ); Tue, 10 Aug 2021 10:17:29 -0400 Received: from mail.kernel.org ([198.145.29.99]:53330 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242473AbhHJOQD (ORCPT ); Tue, 10 Aug 2021 10:16:03 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 186866108C; Tue, 10 Aug 2021 14:15:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628604941; bh=iWvU1n7Xu0JlgJ0bdwl8Mf+K9kye/OKxXwSbIDFd6S0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MYwIqc9H5woyroUdrWo7xBlbIrs5BioSUG3G9ziodXGHY+Ro2rJ2knSDw6brIAxdz yRcFiza0cu4Xo95kmg/gSTBURCFThEKWIStfwsc0IYpDiOZczhjwtTHQUtmv8PFiqj ysdb/lUEjVNw3G0NfsvRJ+Y5dFjToZuGGKyLRkd63BYSRjw090OhoKgjGbVf7tw0ZN /awxG5kyQgB6ax+3HqUISoU4Ue4PQQ+IThFu+ThNmYNnVX5vEE7ignzuQT7nAYGkYt /akD66YwiHvsF933hqUAVNdUNnPo7DsohVkLluxY7u+hRpsE5ZIjFgPBCwrLxbVd+4 307DoAK/wfPwA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yu Kuai , Hulk Robot , Vinod Koul , Sasha Levin , dmaengine@vger.kernel.org Subject: [PATCH AUTOSEL 5.10 02/20] dmaengine: usb-dmac: Fix PM reference leak in usb_dmac_probe() Date: Tue, 10 Aug 2021 10:15:20 -0400 Message-Id: <20210810141538.3117707-2-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210810141538.3117707-1-sashal@kernel.org> References: <20210810141538.3117707-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yu Kuai [ Upstream commit 1da569fa7ec8cb0591c74aa3050d4ea1397778b4 ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. Fix it by moving the error_pm label above the pm_runtime_put() in the error path. Reported-by: Hulk Robot Signed-off-by: Yu Kuai Link: https://lore.kernel.org/r/20210706124521.1371901-1-yukuai3@huawei.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/sh/usb-dmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c index 8f7ceb698226..1cc06900153e 100644 --- a/drivers/dma/sh/usb-dmac.c +++ b/drivers/dma/sh/usb-dmac.c @@ -855,8 +855,8 @@ static int usb_dmac_probe(struct platform_device *pdev) error: of_dma_controller_free(pdev->dev.of_node); - pm_runtime_put(&pdev->dev); error_pm: + pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); return ret; } -- 2.30.2