From patchwork Mon Dec 28 12:47:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 355121 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=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 EB176C433E0 for ; Mon, 28 Dec 2020 13:26:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C02C322B47 for ; Mon, 28 Dec 2020 13:26:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389084AbgL1N0V (ORCPT ); Mon, 28 Dec 2020 08:26:21 -0500 Received: from mail.kernel.org ([198.145.29.99]:54730 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389099AbgL1N0B (ORCPT ); Mon, 28 Dec 2020 08:26:01 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 782BF207CF; Mon, 28 Dec 2020 13:25:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1609161921; bh=rXPopBDqyD3dT3dsIt2Hw+Dd4hszfUpNkyQjeCgt8TA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Iq9dlBFT9hYfyiFJyH6loHFX7nvYVoEND2Gbbp4viZo0Coj264NfxyrlA/BITR8Xz hlqyxXN16J4KOUH1uvAIgIcU8qlbvConEIDYE6hKQ3flZ7o3VYOzYcuddSZThhlhGU kY1DzJIYThUKoCn7dIqOSMa6DhYVbj52qeRoNHGQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zhang Qilong , Mark Brown , Sasha Levin Subject: [PATCH 4.19 128/346] spi: tegra114: fix reference leak in tegra spi ops Date: Mon, 28 Dec 2020 13:47:27 +0100 Message-Id: <20201228124925.974382235@linuxfoundation.org> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201228124919.745526410@linuxfoundation.org> References: <20201228124919.745526410@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Zhang Qilong [ Upstream commit a042184c7fb99961ea083d4ec192614bec671969 ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to pm_runtime_put_noidle will result in reference leak in two callers(tegra_spi_setup and tegra_spi_resume), so we should fix it. Fixes: f333a331adfac ("spi/tegra114: add spi driver") Signed-off-by: Zhang Qilong Link: https://lore.kernel.org/r/20201103141306.5607-1-zhangqilong3@huawei.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-tegra114.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index 09cfae3abce2d..c510b53e5e3f5 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -827,6 +827,7 @@ static int tegra_spi_setup(struct spi_device *spi) ret = pm_runtime_get_sync(tspi->dev); if (ret < 0) { + pm_runtime_put_noidle(tspi->dev); dev_err(tspi->dev, "pm runtime failed, e = %d\n", ret); return ret; } @@ -1252,6 +1253,7 @@ static int tegra_spi_resume(struct device *dev) ret = pm_runtime_get_sync(dev); if (ret < 0) { + pm_runtime_put_noidle(dev); dev_err(dev, "pm runtime failed, e = %d\n", ret); return ret; }