From patchwork Thu Apr 8 07:18:36 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liu Shixin X-Patchwork-Id: 418323 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=-16.8 required=3.0 tests=BAYES_00, 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 E54EDC43462 for ; Thu, 8 Apr 2021 07:19:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B058061057 for ; Thu, 8 Apr 2021 07:19:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229506AbhDHHTa (ORCPT ); Thu, 8 Apr 2021 03:19:30 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:16039 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229877AbhDHHTa (ORCPT ); Thu, 8 Apr 2021 03:19:30 -0400 Received: from DGGEMS404-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FGCHM1pR6zPp7C; Thu, 8 Apr 2021 15:16:31 +0800 (CST) Received: from huawei.com (10.175.113.32) by DGGEMS404-HUB.china.huawei.com (10.3.19.204) with Microsoft SMTP Server id 14.3.498.0; Thu, 8 Apr 2021 15:19:09 +0800 From: Shixin Liu To: Herbert Xu , "David S. Miller" , Maxime Coquelin , "Alexandre Torgue" CC: , , , , Shixin Liu Subject: [PATCH -next 5/7] crypto: stm32/cryp - Fix PM reference leak on stm32-cryp.c Date: Thu, 8 Apr 2021 15:18:36 +0800 Message-ID: <20210408071836.836842-1-liushixin2@huawei.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 X-Originating-IP: [10.175.113.32] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org 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. Signed-off-by: Shixin Liu --- drivers/crypto/stm32/stm32-cryp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/stm32/stm32-cryp.c b/drivers/crypto/stm32/stm32-cryp.c index 2a4793176c71..7389a0536ff0 100644 --- a/drivers/crypto/stm32/stm32-cryp.c +++ b/drivers/crypto/stm32/stm32-cryp.c @@ -542,7 +542,7 @@ static int stm32_cryp_hw_init(struct stm32_cryp *cryp) int ret; u32 cfg, hw_mode; - pm_runtime_get_sync(cryp->dev); + pm_runtime_resume_and_get(cryp->dev); /* Disable interrupt */ stm32_cryp_write(cryp, CRYP_IMSCR, 0); @@ -2043,7 +2043,7 @@ static int stm32_cryp_remove(struct platform_device *pdev) if (!cryp) return -ENODEV; - ret = pm_runtime_get_sync(cryp->dev); + ret = pm_runtime_resume_and_get(cryp->dev); if (ret < 0) return ret;