netdev - [PATCH net-next 1/3] net: phy: make phy_suspend a no-op if PHY is suspended already

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Date:   Thu, 23 Apr 2020 21:34:33 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        David Miller <davem@...emloft.net>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: [PATCH net-next 1/3] net: phy: make phy_suspend a no-op if PHY is
 suspended already

Gently handle the case that phy_suspend() is called whilst PHY is in
power-down.

Signed-off-by: Heiner Kallweit <hkallweit1@...il.com>
---
 drivers/net/phy/phy_device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index ac2784192..206d98502 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1524,6 +1524,9 @@ int phy_suspend(struct phy_device *phydev)
 	struct phy_driver *phydrv = phydev->drv;
 	int ret;
 
+	if (phydev->suspended)
+		return 0;
+
 	/* If the device has WOL enabled, we cannot suspend the PHY */
 	phy_ethtool_get_wol(phydev, &wol);
 	if (wol.wolopts || (netdev && netdev->wol_enabled))
-- 
2.26.2