From patchwork Tue Nov 3 14:13:23 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Qilong X-Patchwork-Id: 315471 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 CCC2CC5517A for ; Tue, 3 Nov 2020 14:05:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7CF8C22264 for ; Tue, 3 Nov 2020 14:05:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729242AbgKCODH (ORCPT ); Tue, 3 Nov 2020 09:03:07 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:6740 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729378AbgKCOCt (ORCPT ); Tue, 3 Nov 2020 09:02:49 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CQWh31Mrxzkdl7; Tue, 3 Nov 2020 22:02:43 +0800 (CST) Received: from huawei.com (10.90.53.225) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.487.0; Tue, 3 Nov 2020 22:02:42 +0800 From: Zhang Qilong To: CC: , , , Subject: [PATCH] spi: tegra20-sflash: fix reference leak in tegra_sflash_resume Date: Tue, 3 Nov 2020 22:13:23 +0800 Message-ID: <20201103141323.5841-1-zhangqilong3@huawei.com> X-Mailer: git-send-email 2.26.0.106.g9fadedd MIME-Version: 1.0 X-Originating-IP: [10.90.53.225] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to pm_runtime_put_noidle will result in reference leak in tegra_sflash_resume, so we should fix it. Fixes: 8528547bcc336 ("spi: tegra: add spi driver for sflash controller") Signed-off-by: Zhang Qilong --- drivers/spi/spi-tegra20-sflash.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c index b59015c7c8a8..cfb7de737937 100644 --- a/drivers/spi/spi-tegra20-sflash.c +++ b/drivers/spi/spi-tegra20-sflash.c @@ -552,6 +552,7 @@ static int tegra_sflash_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; }