linux-kernel - [PATCH 4.9 020/171] asix: Check for supported Wake-on-LAN modes

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Message-Id: <20181108215128.712625017@linuxfoundation.org>
Date:   Thu,  8 Nov 2018 13:49:50 -0800
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.9 020/171] asix: Check for supported Wake-on-LAN modes

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

[ Upstream commit c4ce446e33d7a0e978256ac6fea4c80e59d9de5f ]

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: 2e55cc7210fe ("[PATCH] USB: usbnet (3/9) module for ASIX Ethernet adapters")
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/usb/asix_common.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
index 125cff57c759..3dbb0646b024 100644
--- a/drivers/net/usb/asix_common.c
+++ b/drivers/net/usb/asix_common.c
@@ -575,6 +575,9 @@ int asix_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 |= AX_MONITOR_LINK;
 	if (wolinfo->wolopts & WAKE_MAGIC)
-- 
2.17.1