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=-19.4 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 451B5C49361 for ; Mon, 28 Jun 2021 14:21:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F58661C7E for ; Mon, 28 Jun 2021 14:21:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232697AbhF1OXa (ORCPT ); Mon, 28 Jun 2021 10:23:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:54376 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232889AbhF1OVW (ORCPT ); Mon, 28 Jun 2021 10:21:22 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id B02FF61C7F; Mon, 28 Jun 2021 14:18:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1624889936; bh=ky/LzMqmuKZBKITCQNeQdJdeaFLX/RLjJ8oc2YMNYzU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lXY1BiUumUDVxSfkrFtaBNA29mOaSdPxLYyZRDxzZeVaJxNM6eWHMLhtghrGl2BJt 8vcuzrqQD18YS+xkgapI4sPrQGTe2lA2jjdYeeNUJZq17i0hpBDnEizKQU5FdEolx+ 8lfXfPBdhXZmkrVKNfszPQYcxCzAc5kdPB2mODdadLZas1lBRtKe96uLHlunHWE4qG TFtd2Qy3+j5DQSWKxgqYz1i7prRa27n+A3ixnMWRPH8SE9iiHsoBwK+xP6GvR5COqy qco5G7ijS/Taajyikw0DNhDVSXfCVFh/d9LoVL1d/71+Z9WGR117qR62GTCgbHHk1g wp30En0+zXp7w== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Zou Wei , Hulk Robot , Laurent Pinchart , Geert Uytterhoeven , Vinod Koul , Sasha Levin Subject: [PATCH 5.12 030/110] dmaengine: rcar-dmac: Fix PM reference leak in rcar_dmac_probe() Date: Mon, 28 Jun 2021 10:17:08 -0400 Message-Id: <20210628141828.31757-31-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210628141828.31757-1-sashal@kernel.org> References: <20210628141828.31757-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.12.14-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.12.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.12.14-rc1 X-KernelTest-Deadline: 2021-06-30T14:18+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Zou Wei [ Upstream commit dea8464ddf553803382efb753b6727dbf3931d06 ] 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 replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Reported-by: Hulk Robot Signed-off-by: Zou Wei Reviewed-by: Laurent Pinchart Reviewed-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/1622442963-54095-1-git-send-email-zou_wei@huawei.com Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/sh/rcar-dmac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index d530c1bf11d9..6885b3dcd7a9 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -1913,7 +1913,7 @@ static int rcar_dmac_probe(struct platform_device *pdev) /* Enable runtime PM and initialize the device. */ pm_runtime_enable(&pdev->dev); - ret = pm_runtime_get_sync(&pdev->dev); + ret = pm_runtime_resume_and_get(&pdev->dev); if (ret < 0) { dev_err(&pdev->dev, "runtime PM get sync failed (%d)\n", ret); return ret; -- 2.30.2