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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,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 F0D87C33CAF for ; Thu, 16 Jan 2020 17:17:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C652924679 for ; Thu, 16 Jan 2020 17:17:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579195079; bh=94usrpuvHkK+oqpe26a5HjtKs1zleocJ+1SOwzdpkao=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=erZzCk4fqMAQ6os/DtK94hy7rwDV9gYhsF6I0+De9OnStnO/rVAc9zOIWIc+DMfEC shBtm86Lyz9ELFsi92MsFYLGyCWkn6sKCf4BKsj0g/EloOdoBhNhHC9sleFCYid+/O 1jN1iuRNY7LBJC8r2q0MKenTZKSV9NnOhyEZZ1rc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390945AbgAPRR6 (ORCPT ); Thu, 16 Jan 2020 12:17:58 -0500 Received: from mail.kernel.org ([198.145.29.99]:43604 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391260AbgAPRRq (ORCPT ); Thu, 16 Jan 2020 12:17:46 -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 5545E2075B; Thu, 16 Jan 2020 17:17:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579195066; bh=94usrpuvHkK+oqpe26a5HjtKs1zleocJ+1SOwzdpkao=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=O/tv+NXqnsX7KUKdEip+w5UuayM0F3hVNalLfb31JqDwgWsoyVRGgaHJ7LoWg5pYV lmxGt7gKQ5u3tLsibYgGr7xDdIyQ5+XzrzHWp5aDFSnTqBw8S2eXM37EdeLYExMKFA HBJ52wULvpva5sB3qoMVYVwGPk/5zVCwSph2c7Uw= 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 4.14 020/371] net: phy: Fix not to call phy_resume() if PHY is not attached Date: Thu, 16 Jan 2020 12:11:28 -0500 Message-Id: <20200116171719.16965-20-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116171719.16965-1-sashal@kernel.org> References: <20200116171719.16965-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review 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 a98c227a4c2e..99dae55cd334 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -76,7 +76,7 @@ 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); @@ -88,10 +88,11 @@ 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. @@ -121,7 +122,7 @@ 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); @@ -132,7 +133,7 @@ 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); -- 2.20.1