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=-20.4 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 A8B1DC07E9C for ; Tue, 6 Jul 2021 11:17:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88FE061CBE for ; Tue, 6 Jul 2021 11:17:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232039AbhGFLUK (ORCPT ); Tue, 6 Jul 2021 07:20:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:53640 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232390AbhGFLSN (ORCPT ); Tue, 6 Jul 2021 07:18:13 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 85D7A61C65; Tue, 6 Jul 2021 11:15:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1625570135; bh=3TknRs7jyrXAfj5flQ03eMn8DEVq11RAc6wlWlgdPjM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q7giBTTXq3840tPYKx7BIwOza9mFdl0B0gsPkWf6Re+q5JSedLM4h2yvblfiFUeb6 kht6yBc4NxqaxXyx+WdQ4OvUC7pJhUVmn1LVJEzektUXtnZ5OiwAwfrc3ilEe/jNCC eiDk8cLB3oRNiRAHXXkD0UDpsdP0pNOSCOpvUovhCqc1lo6sJCuntO1S23Z+ybOfp0 IUu71eM6WKZBRZPsZgnBa92J4Jj+n86PiPhvyGtBJfC+JXrPoyoI1SZaiexuoELzhM EwBHBe3OZFlrA0UREAFlcicbhOzc4vhowPdzkENalBeg6WPvg3AqIXGQmMR410n/+U XTN2JZEAzQGsQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yu Kuai , Hulk Robot , Robert Foss , Sasha Levin , dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.13 061/189] drm: bridge: cdns-mhdp8546: Fix PM reference leak in Date: Tue, 6 Jul 2021 07:12:01 -0400 Message-Id: <20210706111409.2058071-61-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706111409.2058071-1-sashal@kernel.org> References: <20210706111409.2058071-1-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 f674555ee5444c8987dfea0922f1cf6bf0c12847 ] 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: Yu Kuai Reviewed-by: Robert Foss Signed-off-by: Robert Foss Link: https://patchwork.freedesktop.org/patch/msgid/20210531135622.3348252-1-yukuai3@huawei.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c index 989a05bc8197..ddcd5b6ad37a 100644 --- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c +++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c @@ -2369,9 +2369,9 @@ static int cdns_mhdp_probe(struct platform_device *pdev) clk_prepare_enable(clk); pm_runtime_enable(dev); - ret = pm_runtime_get_sync(dev); + ret = pm_runtime_resume_and_get(dev); if (ret < 0) { - dev_err(dev, "pm_runtime_get_sync failed\n"); + dev_err(dev, "pm_runtime_resume_and_get failed\n"); pm_runtime_disable(dev); goto clk_disable; } -- 2.30.2