From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=unavailable 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 8A3FDC2D0C0 for ; Mon, 16 Dec 2019 11:20:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6885F2467B for ; Mon, 16 Dec 2019 11:20:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727383AbfLPLUq (ORCPT ); Mon, 16 Dec 2019 06:20:46 -0500 Received: from foss.arm.com ([217.140.110.172]:50666 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727086AbfLPLUq (ORCPT ); Mon, 16 Dec 2019 06:20:46 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 9B9901FB; Mon, 16 Dec 2019 03:20:45 -0800 (PST) Received: from localhost (unknown [10.37.6.20]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 144D73F6CF; Mon, 16 Dec 2019 03:20:44 -0800 (PST) Date: Mon, 16 Dec 2019 11:20:43 +0000 From: Andrew Murray To: David Engraf Cc: thierry.reding@gmail.com, lorenzo.pieralisi@arm.com, bhelgaas@google.com, jonathanh@nvidia.com, linux-tegra@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] PCI: tegra: Fix return value check of pm_runtime_get_sync Message-ID: <20191216112043.GS24359@e119886-lin.cambridge.arm.com> References: <20191216102208.GO24359@e119886-lin.cambridge.arm.com> <20191216111825.28136-1-david.engraf@sysgo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191216111825.28136-1-david.engraf@sysgo.com> User-Agent: Mutt/1.10.1+81 (426a6c1) (2018-08-26) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 16, 2019 at 12:18:25PM +0100, David Engraf wrote: > pm_runtime_get_sync() returns the device's usage counter. This might > be >0 if the device is already powered up or CONFIG_PM is disabled. > > Abort probe function on real error only. > > Fixes: da76ba50963b ("PCI: tegra: Add power management support") > Signed-off-by: David Engraf Thanks for this - apologies my feedback wasn't as quick as your respin. Acked-by: Andrew Murray > --- > drivers/pci/controller/pci-tegra.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c > index 673a1725ef38..090b632965e2 100644 > --- a/drivers/pci/controller/pci-tegra.c > +++ b/drivers/pci/controller/pci-tegra.c > @@ -2798,7 +2798,7 @@ static int tegra_pcie_probe(struct platform_device *pdev) > > pm_runtime_enable(pcie->dev); > err = pm_runtime_get_sync(pcie->dev); > - if (err) { > + if (err < 0) { > dev_err(dev, "fail to enable pcie controller: %d\n", err); > goto teardown_msi; > } > -- > 2.17.1 >