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=-9.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 AFC89C65BAE for ; Thu, 13 Dec 2018 04:39:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6D07C20849 for ; Thu, 13 Dec 2018 04:39:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544675975; bh=Fbdm6Zplnk5m05qwSynJi1a8Kux/1urgBp/+uD0rqBM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Y8vwg11tJE7Sg1n5Rs0A29vz+FY/f/h4oQUVMkxR95LfofErABCvNsBCe58R5i8Vh pDBGGISY+4uCm8rqdMEPrnN2gR8bV8CxZG/9rwsG80NpJ88hnKb4AV1bMSV1XTR4lN 05upNdg9rnKymLS8xxd3TvYc1BZQW0cVfS8AoTLM= DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D07C20849 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729150AbeLMEck (ORCPT ); Wed, 12 Dec 2018 23:32:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:45528 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729124AbeLMEci (ORCPT ); Wed, 12 Dec 2018 23:32:38 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5E00520672; Thu, 13 Dec 2018 04:32:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1544675558; bh=Fbdm6Zplnk5m05qwSynJi1a8Kux/1urgBp/+uD0rqBM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wg939yaVW+SMsOZ1IUtWFKJ6UsgUUV0trJJq8zuTu9KCHa9nkVCsAJKj/jwN3k4H2 5wBLWOsgLaSxKnC9L23Boz5QJfpQKkq9vcl8/1AxzsRKr5dm5IQlUmeUvhus2+8zs3 I77iJ4rwMrrdCh8YZEPcN7w3+f8konNEKafNnrMo= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Yoshihiro Shimoda , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org Subject: [PATCH AUTOSEL 4.9 21/34] net: phy: Fix not to call phy_resume() if PHY is not attached Date: Wed, 12 Dec 2018 23:31:47 -0500 Message-Id: <20181213043200.76295-21-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181213043200.76295-1-sashal@kernel.org> References: <20181213043200.76295-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Yoshihiro Shimoda [ Upstream commit ef1b5bf506b1f0ee3edc98533e1f3ecb105eb46a ] This patch fixes an issue that mdio_bus_phy_resume() doesn't call phy_resume() if the PHY is not attached. Fixes: 803dd9c77ac3 ("net: phy: avoid suspending twice a PHY") Signed-off-by: Yoshihiro Shimoda Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/phy/phy_device.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index f04be9e8980f..b518fa12fb98 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -80,7 +80,7 @@ static LIST_HEAD(phy_fixup_list); static DEFINE_MUTEX(phy_fixup_lock); #ifdef CONFIG_PM -static bool mdio_bus_phy_may_suspend(struct phy_device *phydev) +static bool mdio_bus_phy_may_suspend(struct phy_device *phydev, bool suspend) { struct device_driver *drv = phydev->mdio.dev.driver; struct phy_driver *phydrv = to_phy_driver(drv); @@ -92,10 +92,11 @@ static bool mdio_bus_phy_may_suspend(struct phy_device *phydev) /* PHY not attached? May suspend if the PHY has not already been * suspended as part of a prior call to phy_disconnect() -> * phy_detach() -> phy_suspend() because the parent netdev might be the - * MDIO bus driver and clock gated at this point. + * MDIO bus driver and clock gated at this point. Also may resume if + * PHY is not attached. */ if (!netdev) - return !phydev->suspended; + return suspend ? !phydev->suspended : phydev->suspended; /* Don't suspend PHY if the attached netdev parent may wakeup. * The parent may point to a PCI device, as in tg3 driver. @@ -125,7 +126,7 @@ static int mdio_bus_phy_suspend(struct device *dev) if (phydev->attached_dev && phydev->adjust_link) phy_stop_machine(phydev); - if (!mdio_bus_phy_may_suspend(phydev)) + if (!mdio_bus_phy_may_suspend(phydev, true)) return 0; return phy_suspend(phydev); @@ -136,7 +137,7 @@ static int mdio_bus_phy_resume(struct device *dev) struct phy_device *phydev = to_phy_device(dev); int ret; - if (!mdio_bus_phy_may_suspend(phydev)) + if (!mdio_bus_phy_may_suspend(phydev, false)) goto no_resume; ret = phy_resume(phydev); -- 2.19.1