[PATCH 3.16 273/328] ax88179_178a: Check for supported Wake-on-LAN modes

[Ben Hutchings]

3.16.62-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Florian Fainelli <f.fainelli@xxxxxxxxx>

commit 5ba6b4aa9a410c5e2c6417df52b5e2118ea9b467 upstream.

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: e2ca90c276e1 ("ax88179_178a: ASIX AX88179_178A USB 3.0/2.0 to gigabit ethernet adapter driver")
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
 drivers/net/usb/ax88179_178a.c | 3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c
@@ -506,6 +506,9 @@ ax88179_set_wol(struct net_device *net,
 	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_MODE_RWLC;
 	if (wolinfo->wolopts & WAKE_MAGIC)