[PATCH 4.9 022/171] lan78xx: Check for supported Wake-on-LAN modes

[Greg Kroah-Hartman]

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

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

[ Upstream commit eb9ad088f96653a26b340f7c447c44cf023d5cdc ]

The driver supports a fair amount of Wake-on-LAN modes, but is not
checking that the user specified one that is supported.

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Reviewed-by: Woojung Huh <Woojung.Huh@xxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/net/usb/lan78xx.c | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c
index c5e04d1ad73a..0cbcd3f77341 100644
--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -1311,19 +1311,10 @@ static int lan78xx_set_wol(struct net_device *netdev,
 	if (ret < 0)
 		return ret;
 
-	pdata->wol = 0;
-	if (wol->wolopts & WAKE_UCAST)
-		pdata->wol |= WAKE_UCAST;
-	if (wol->wolopts & WAKE_MCAST)
-		pdata->wol |= WAKE_MCAST;
-	if (wol->wolopts & WAKE_BCAST)
-		pdata->wol |= WAKE_BCAST;
-	if (wol->wolopts & WAKE_MAGIC)
-		pdata->wol |= WAKE_MAGIC;
-	if (wol->wolopts & WAKE_PHY)
-		pdata->wol |= WAKE_PHY;
-	if (wol->wolopts & WAKE_ARP)
-		pdata->wol |= WAKE_ARP;
+	if (wol->wolopts & ~WAKE_ALL)
+		return -EINVAL;
+
+	pdata->wol = wol->wolopts;
 
 	device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);
 
-- 
2.17.1