linux-kernel - [PATCH net v2 6/7] smsc75xx: Check for Wake-on-LAN modes

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Date:   Fri, 28 Sep 2018 16:18:55 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     netdev@...r.kernel.org
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Woojung Huh <woojung.huh@...rochip.com>,
        Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
        Steve Glendinning <steve.glendinning@...well.net>,
        Kees Cook <keescook@...omium.org>,
        Alexander Kurz <akurz@...la.de>,
        Hayes Wang <hayeswang@...ltek.com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Grant Grundler <grundler@...omium.org>,
        zhong jiang <zhongjiang@...wei.com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Ran Wang <ran.wang_1@....com>,
        Eric Dumazet <edumazet@...gle.com>,
        linux-usb@...r.kernel.org (open list:USB NETWORKING DRIVERS),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net v2 6/7] smsc75xx: Check for Wake-on-LAN modes

The driver does not check for Wake-on-LAN modes specified by an user,
but will conditionally set the device as wake-up enabled or not based on
that, which could be a very confusing user experience.

Fixes: 6c636503260d ("smsc75xx: add wol magic packet support")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/usb/smsc75xx.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c
index 05553d252446..e5a4cbb366dc 100644
--- a/drivers/net/usb/smsc75xx.c
+++ b/drivers/net/usb/smsc75xx.c
@@ -731,6 +731,9 @@ static int smsc75xx_ethtool_set_wol(struct net_device *net,
 	struct smsc75xx_priv *pdata = (struct smsc75xx_priv *)(dev->data[0]);
 	int ret;
 
+	if (wolinfo->wolopts & ~SUPPORTED_WAKE)
+		return -EINVAL;
+
 	pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;
 
 	ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
-- 
2.17.1