[PATCH 3.16 274/328] sr9800: Check for supported Wake-on-LAN modes

Ben Hutchings
2018-12-09T22:02:09Z

From: Florian Fainelli <f.fainelli@gmail.com>

commit c5cb93e994ffb43b7b3b1ff10b9f928f54574a36 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: 19a38d8e0aa3 ("USB2NET : SR9800 : One chip USB2.0 USB2NET SR9800 Device Driver Support")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/net/usb/sr9800.c | 3 +++
1 file changed, 3 insertions(+)

--- a/drivers/net/usb/sr9800.c
+++ b/drivers/net/usb/sr9800.c
@@ -421,6 +421,9 @@ sr_set_wol(struct net_device *net, struc
struct usbnet *dev = netdev_priv(net);
u8 opt = 0;

+ if (wolinfo->wolopts & ~(WAKE_PHY | WAKE_MAGIC))
+ return -EINVAL;
+
if (wolinfo->wolopts & WAKE_PHY)
opt |= SR_MONITOR_LINK;
if (wolinfo->wolopts & WAKE_MAGIC)