Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752162AbdDNLM0 (ORCPT ); Fri, 14 Apr 2017 07:12:26 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:54789 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751626AbdDNLMY (ORCPT ); Fri, 14 Apr 2017 07:12:24 -0400 From: Jisheng Zhang To: , CC: , , , Jisheng Zhang Subject: [PATCH net-next] net: mvneta: fix failed to suspend if WOL is enabled Date: Fri, 14 Apr 2017 19:07:32 +0800 Message-ID: <20170414110732.3100-1-jszhang@marvell.com> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 Content-Type: text/plain X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-04-14_06:,, signatures=0 X-Proofpoint-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1702020001 definitions=main-1704140098 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2222 Lines: 66 Recently, suspend/resume and WOL support are added into mvneta driver. If we enable WOL, then we get some error as below on Marvell BG4CT platforms during suspend: [ 184.149723] dpm_run_callback(): mdio_bus_suspend+0x0/0x50 returns -16 [ 184.149727] PM: Device f7b62004.mdio-mi:00 failed to suspend: error -16 -16 means -EBUSY, phy_suspend() will return -EBUSY if it finds the device has WOL enabled. We fix this issue by properly setting the netdev's power.can_wakeup and power.wakeup, i.e 1. in mvneta_mdio_probe(), call device_set_wakeup_capable() to set power.can_wakeup if the phy support WOL. 2. in mvneta_ethtool_set_wol(), call device_set_wakeup_enable() to set power.wakeup if WOL has been successfully enabled in phy. Signed-off-by: Jisheng Zhang --- drivers/net/ethernet/marvell/mvneta.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 34a3686d2ce6..0992db47070f 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -3318,6 +3318,7 @@ static void mvneta_adjust_link(struct net_device *ndev) static int mvneta_mdio_probe(struct mvneta_port *pp) { struct phy_device *phy_dev; + struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; phy_dev = of_phy_connect(pp->dev, pp->phy_node, mvneta_adjust_link, 0, pp->phy_interface); @@ -3326,6 +3327,9 @@ static int mvneta_mdio_probe(struct mvneta_port *pp) return -ENODEV; } + phy_ethtool_get_wol(phy_dev, &wol); + device_set_wakeup_capable(&pp->dev->dev, !!wol.supported); + phy_dev->supported &= PHY_GBIT_FEATURES; phy_dev->advertising = phy_dev->supported; @@ -3942,10 +3946,16 @@ static void mvneta_ethtool_get_wol(struct net_device *dev, static int mvneta_ethtool_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol) { + int ret; + if (!dev->phydev) return -EOPNOTSUPP; - return phy_ethtool_set_wol(dev->phydev, wol); + ret = phy_ethtool_set_wol(dev->phydev, wol); + if (!ret) + device_set_wakeup_enable(&dev->dev, !!wol->wolopts); + + return ret; } static const struct net_device_ops mvneta_netdev_ops = { -- 2.11.0