linux-kernel - [PATCH net-next 3/3] net: ethernet: ave: Preserve wol state in suspend/resume sequence

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Message-Id: <1543478793-13719-4-git-send-email-hayashi.kunihiko@socionext.com>
Date:   Thu, 29 Nov 2018 17:06:33 +0900
From:   Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
Subject: [PATCH net-next 3/3] net: ethernet: ave: Preserve wol state in suspend/resume sequence

Since the wol state forces to be initialized after reset, the state should
be preserved in suspend/resume sequence.

Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>
---
 drivers/net/ethernet/socionext/sni_ave.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/net/ethernet/socionext/sni_ave.c b/drivers/net/ethernet/socionext/sni_ave.c
index ac96fb9..8c1e120 100644
--- a/drivers/net/ethernet/socionext/sni_ave.c
+++ b/drivers/net/ethernet/socionext/sni_ave.c
@@ -261,6 +261,7 @@ struct ave_private {
 	struct regmap		*regmap;
 	unsigned int		pinmode_mask;
 	unsigned int		pinmode_val;
+	u32			wolopts;
 
 	/* stats */
 	struct ave_stats	stats_rx;
@@ -1741,6 +1742,7 @@ static int ave_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM_SLEEP
 static int ave_suspend(struct device *dev)
 {
+	struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct ave_private *priv = netdev_priv(ndev);
 	int ret = 0;
@@ -1750,17 +1752,25 @@ static int ave_suspend(struct device *dev)
 		netif_device_detach(ndev);
 	}
 
+	ave_ethtool_get_wol(ndev, &wol);
+	priv->wolopts = wol.wolopts;
+
 	return ret;
 }
 
 static int ave_resume(struct device *dev)
 {
+	struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct ave_private *priv = netdev_priv(ndev);
 	int ret = 0;
 
 	ave_global_reset(ndev);
 
+	ave_ethtool_get_wol(ndev, &wol);
+	wol.wolopts = priv->wolopts;
+	ave_ethtool_set_wol(ndev, &wol);
+
 	if (ndev->phydev) {
 		ret = phy_resume(ndev->phydev);
 		if (ret)
-- 
2.7.4