From patchwork Mon Jul 12 06:09:04 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 474539 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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 412B9C07E9C for ; Mon, 12 Jul 2021 06:22:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2894F61176 for ; Mon, 12 Jul 2021 06:22:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234586AbhGLGZE (ORCPT ); Mon, 12 Jul 2021 02:25:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:38964 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234927AbhGLGYS (ORCPT ); Mon, 12 Jul 2021 02:24:18 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 49FF86101E; Mon, 12 Jul 2021 06:20:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626070838; bh=4sFPbBuQ5IRBCCq/SxeCYLyFVNI3DnTMInot2pPyprw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2RGEMIf7Dm0/m6LSd0hagGCIv+9ghwLMtMqkx6VPYmX67MqwitwPMgmbynJIaiIeY M/jjfPiyBxaaRen9lEkY/k/GYXEVDosoxhdvByJ/9PkIc5INd94vCom4wGtSP9CciE eBAEW3OL0CqNSkr17egc08AXvOhWgo86AZA4o9VQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zhang Qilong , Herbert Xu , Sasha Levin Subject: [PATCH 5.4 160/348] crypto: omap-sham - Fix PM reference leak in omap sham ops Date: Mon, 12 Jul 2021 08:09:04 +0200 Message-Id: <20210712060722.214241935@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210712060659.886176320@linuxfoundation.org> References: <20210712060659.886176320@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 ca323b2c61ec321eb9f2179a405b9c34cdb4f553 ] pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. We fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 604c31039dae4 ("crypto: omap-sham - Check for return value from pm_runtime_get_sync") Signed-off-by: Zhang Qilong Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/omap-sham.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c index d7c0c982ba43..f80db1eb2994 100644 --- a/drivers/crypto/omap-sham.c +++ b/drivers/crypto/omap-sham.c @@ -364,7 +364,7 @@ static int omap_sham_hw_init(struct omap_sham_dev *dd) { int err; - err = pm_runtime_get_sync(dd->dev); + err = pm_runtime_resume_and_get(dd->dev); if (err < 0) { dev_err(dd->dev, "failed to get sync: %d\n", err); return err; @@ -2236,7 +2236,7 @@ static int omap_sham_suspend(struct device *dev) static int omap_sham_resume(struct device *dev) { - int err = pm_runtime_get_sync(dev); + int err = pm_runtime_resume_and_get(dev); if (err < 0) { dev_err(dev, "failed to get sync: %d\n", err); return err;