[PATCH 4.14 036/143] smsc95xx: Check for Wake-on-LAN modes

From: Greg Kroah-Hartman
Date: Fri Nov 02 2018 - 14:51:05 EST


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

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

[ Upstream commit c530c471ba37bdd9fe1c7185b01455c00ae606fb ]

The driver does not check for Wake-on-LAN modes specified by an user,
but will conditionally set the device as wake-up enabled or not based on
that, which could be a very confusing user experience.

Fixes: e0e474a83c18 ("smsc95xx: add wol magic packet support")
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/usb/smsc95xx.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 309b88acd3d0..99e684e39d35 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -774,6 +774,9 @@ static int smsc95xx_ethtool_set_wol(struct net_device *net,
struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
int ret;

+ if (wolinfo->wolopts & ~SUPPORTED_WAKE)
+ return -EINVAL;
+
pdata->wolopts = wolinfo->wolopts & SUPPORTED_WAKE;

ret = device_set_wakeup_enable(&dev->udev->dev, pdata->wolopts);
--
2.17.1