linux-kernel - [PATCH net 5/7] r8152: Check for supported Wake-on-LAN Modes

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Message-Id: <20180924205420.31309-6-f.fainelli@gmail.com>
Date:   Mon, 24 Sep 2018 13:54:18 -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 5/7] r8152: Check for supported 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: 21ff2e8976b1 ("r8152: support WOL")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
 drivers/net/usb/r8152.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index 2cd71bdb6484..f1b5201cc320 100644
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -4506,6 +4506,9 @@ static int rtl8152_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 	if (!rtl_can_wakeup(tp))
 		return -EOPNOTSUPP;
 
+	if (wol->wolopts & ~WAKE_ANY)
+		return -EINVAL;
+
 	ret = usb_autopm_get_interface(tp->intf);
 	if (ret < 0)
 		goto out_set_wol;
-- 
2.17.1