From patchwork Thu Apr 8 07:18:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Liu Shixin X-Patchwork-Id: 417585 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, 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 317A8C433ED for ; Thu, 8 Apr 2021 07:19:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 083826115B for ; Thu, 8 Apr 2021 07:19:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229517AbhDHHTX (ORCPT ); Thu, 8 Apr 2021 03:19:23 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:16038 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229506AbhDHHTX (ORCPT ); Thu, 8 Apr 2021 03:19:23 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4FGCHC6DwfzPnwx; Thu, 8 Apr 2021 15:16:23 +0800 (CST) Received: from huawei.com (10.175.113.32) by DGGEMS411-HUB.china.huawei.com (10.3.19.211) with Microsoft SMTP Server id 14.3.498.0; Thu, 8 Apr 2021 15:19:04 +0800 From: Shixin Liu To: Corentin Labbe , Herbert Xu , "David S. Miller" , Maxime Ripard , Chen-Yu Tsai , "Jernej Skrabec" CC: , , , , Shixin Liu Subject: [PATCH -next 1/7] crypto: sun4i-ss - Fix PM reference leak when pm_runtime_get_sync() fails Date: Thu, 8 Apr 2021 15:18:31 +0800 Message-ID: <20210408071831.836638-1-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/allwinner/sun4i-ss/sun4i-ss-cipher.c | 2 +- drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c | 2 +- drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c | 2 +- drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c | 2 +- 4 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c index c2e6f5ed1d79..dec79fa3ebaf 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-cipher.c @@ -561,7 +561,7 @@ int sun4i_ss_cipher_init(struct crypto_tfm *tfm) sizeof(struct sun4i_cipher_req_ctx) + crypto_skcipher_reqsize(op->fallback_tfm)); - err = pm_runtime_get_sync(op->ss->dev); + err = pm_runtime_resume_and_get(op->ss->dev); if (err < 0) goto error_pm; diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c index ef224d5e4903..44b8fc4b786d 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-core.c @@ -454,7 +454,7 @@ static int sun4i_ss_probe(struct platform_device *pdev) * this info could be useful */ - err = pm_runtime_get_sync(ss->dev); + err = pm_runtime_resume_and_get(ss->dev); if (err < 0) goto error_pm; diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c index c1b4585e9bbc..d28292762b32 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-hash.c @@ -27,7 +27,7 @@ int sun4i_hash_crainit(struct crypto_tfm *tfm) algt = container_of(alg, struct sun4i_ss_alg_template, alg.hash); op->ss = algt->ss; - err = pm_runtime_get_sync(op->ss->dev); + err = pm_runtime_resume_and_get(op->ss->dev); if (err < 0) return err; diff --git a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c index 443160a114bb..491fcb7b81b4 100644 --- a/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c +++ b/drivers/crypto/allwinner/sun4i-ss/sun4i-ss-prng.c @@ -29,7 +29,7 @@ int sun4i_ss_prng_generate(struct crypto_rng *tfm, const u8 *src, algt = container_of(alg, struct sun4i_ss_alg_template, alg.rng); ss = algt->ss; - err = pm_runtime_get_sync(ss->dev); + err = pm_runtime_resume_and_get(ss->dev); if (err < 0) return err;