From patchwork Wed May 4 16:44:07 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 569746 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7D69C433F5 for ; Wed, 4 May 2022 17:07:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236340AbiEDRK7 (ORCPT ); Wed, 4 May 2022 13:10:59 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356760AbiEDRJl (ORCPT ); Wed, 4 May 2022 13:09:41 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E817E6354; Wed, 4 May 2022 09:55:31 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 8C352B82792; Wed, 4 May 2022 16:55:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2ACC3C385A4; Wed, 4 May 2022 16:55:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1651683330; bh=n9Q/W/occ0bb07vn7HK5qwDHGDLUQo+K6rMhV1GBuo8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=U0REyl/uWvNRLngLs59+DHV71bKP3fAiycDWJauSOh5Sx9VTUSoFdwakcuimuy3Eu Qgkl9iRTVKOwQyS76/8GGmIU1dBbNxXtSg6BF5fxzA1Uda/mNNWe2ULV5kXNvNXbOZ 3KbrV2b2wSOsd/EUp5UpzZ9EkHGT9ED04PG927BY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Zhang Qilong Subject: [PATCH 5.17 009/225] usb: xhci: tegra:Fix PM usage reference leak of tegra_xusb_unpowergate_partitions Date: Wed, 4 May 2022 18:44:07 +0200 Message-Id: <20220504153111.114797832@linuxfoundation.org> X-Mailer: git-send-email 2.36.0 In-Reply-To: <20220504153110.096069935@linuxfoundation.org> References: <20220504153110.096069935@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: zhangqilong commit 8771039482d965bdc8cefd972bcabac2b76944a8 upstream. 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: 41a7426d25fa ("usb: xhci: tegra: Unlink power domain devices") Cc: stable Signed-off-by: Zhang Qilong Link: https://lore.kernel.org/r/20220319023822.145641-1-zhangqilong3@huawei.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-tegra.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/usb/host/xhci-tegra.c +++ b/drivers/usb/host/xhci-tegra.c @@ -1034,13 +1034,13 @@ static int tegra_xusb_unpowergate_partit int rc; if (tegra->use_genpd) { - rc = pm_runtime_get_sync(tegra->genpd_dev_ss); + rc = pm_runtime_resume_and_get(tegra->genpd_dev_ss); if (rc < 0) { dev_err(dev, "failed to enable XUSB SS partition\n"); return rc; } - rc = pm_runtime_get_sync(tegra->genpd_dev_host); + rc = pm_runtime_resume_and_get(tegra->genpd_dev_host); if (rc < 0) { dev_err(dev, "failed to enable XUSB Host partition\n"); pm_runtime_put_sync(tegra->genpd_dev_ss);