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=-13.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,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 4DEDCC4161F for ; Mon, 20 Jul 2020 21:39:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 24D5122D00 for ; Mon, 20 Jul 2020 21:39:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595281161; bh=iEtFf7QMN19S5dmrOUJonugb+EIs3TYktwEmUKejVvI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=UxjXUVEkPNVCraqcYau7ojtBidB+NncaiT2O2/1OZpW4TgdgxGDkeqzYpK0mT5fPD z0UrUmt6r3NrBHz/6KiZh/BprLnRJq6Sksz62aqqPnMM5MSxokDX3unHiehvlB257W Wr6QwHjoeR6I/p0ep2F6tRLgtgVtcl6CkeGTO1Ec= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728426AbgGTVjU (ORCPT ); Mon, 20 Jul 2020 17:39:20 -0400 Received: from mail.kernel.org ([198.145.29.99]:58738 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728242AbgGTVjT (ORCPT ); Mon, 20 Jul 2020 17:39:19 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 4605622D07; Mon, 20 Jul 2020 21:39:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595281159; bh=iEtFf7QMN19S5dmrOUJonugb+EIs3TYktwEmUKejVvI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VyCXWOadmWW1u6N3vcIAmG/GzMUpHUMWcU9D6sqL3lHOdrgpudS7gD0/laa5l9KuD ZgeYdOeKgj1REt5Wp9CDAorag/GLuPGG9ZxZ8xDzJda0KlLqVfKScpLlDbFdfuCnXm fu6XK4DTzwWG2FCLDezSQutEKnln4RTutYArhCqA= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dinghao Liu , Jon Hunter , Vinod Koul , Sasha Levin , dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 03/13] dmaengine: tegra210-adma: Fix runtime PM imbalance on error Date: Mon, 20 Jul 2020 17:39:04 -0400 Message-Id: <20200720213914.407919-3-sashal@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200720213914.407919-1-sashal@kernel.org> References: <20200720213914.407919-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org From: Dinghao Liu [ Upstream commit 5b78fac4b1ba731cf4177fdbc1e3a4661521bcd0 ] pm_runtime_get_sync() increments the runtime PM usage counter even when it returns an error code. Thus a pairing decrement is needed on the error handling path to keep the counter balanced. Signed-off-by: Dinghao Liu Reviewed-by: Jon Hunter Link: https://lore.kernel.org/r/20200624064626.19855-1-dinghao.liu@zju.edu.cn Signed-off-by: Vinod Koul Signed-off-by: Sasha Levin --- drivers/dma/tegra210-adma.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/dma/tegra210-adma.c b/drivers/dma/tegra210-adma.c index 045351f3549c1..86b45198fb962 100644 --- a/drivers/dma/tegra210-adma.c +++ b/drivers/dma/tegra210-adma.c @@ -583,6 +583,7 @@ static int tegra_adma_alloc_chan_resources(struct dma_chan *dc) ret = pm_runtime_get_sync(tdc2dev(tdc)); if (ret < 0) { + pm_runtime_put_noidle(tdc2dev(tdc)); free_irq(tdc->irq, tdc); return ret; } @@ -764,8 +765,10 @@ static int tegra_adma_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); ret = pm_runtime_get_sync(&pdev->dev); - if (ret < 0) + if (ret < 0) { + pm_runtime_put_noidle(&pdev->dev); goto rpm_disable; + } ret = tegra_adma_init(tdma); if (ret) -- 2.25.1