asix: Check for supported Wake-on-LAN modes

BugLink: https://bugs.launchpad.net/bugs/1836654
[ 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@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>

diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
index f4d7362eb325618254aebf2130757da0fb888472..930a8cbbb372a70ed3205dc1350c71df38d581d5 100644 (file)
--- a/drivers/net/usb/asix_common.c
+++ b/drivers/net/usb/asix_common.c
@@ -607,6 +607,9 @@ 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)