linux-kernel - [PATCH net 4/7] sr9800: Check for supported Wake-on-LAN modes

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Message-Id: <20180924205420.31309-5-f.fainelli@gmail.com>
Date:   Mon, 24 Sep 2018 13:54:17 -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 4/7] sr9800: Check for supported Wake-on-LAN modes

The driver currently silently accepts unsupported Wake-on-LAN modes
(other than WAKE_PHY or WAKE_MAGIC) without reporting that to the user,
which is confusing.

Fixes: 19a38d8e0aa3 ("USB2NET : SR9800 : One chip USB2.0 USB2NET SR9800 Device Driver Support")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/usb/sr9800.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
index 9277a0f228df..35f39f23d881 100644
--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -421,6 +421,9 @@ sr_set_wol(struct net_device *net, struct ethtool_wolinfo *wolinfo)
 	struct usbnet *dev = netdev_priv(net);
 	u8 opt = 0;
 
+	if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
+		return -EINVAL;
+
 	if (wolinfo->wolopts & WAKE_PHY)
 		opt |= SR_MONITOR_LINK;
 	if (wolinfo->wolopts & WAKE_MAGIC)
-- 
2.17.1