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    Subject[PATCH AUTOSEL 4.18 050/100] sr9800: Check for supported Wake-on-LAN modes
    Date
    From: Florian Fainelli <f.fainelli@gmail.com>

    [ Upstream commit c5cb93e994ffb43b7b3b1ff10b9f928f54574a36 ]

    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: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/usb/sr9800.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/usb/sr9800.c b/drivers/net/usb/sr9800.c
    index 9277a0f228df..35f39f23d881 100644
    --- a/drivers/net/usb/sr9800.c
    +++ b/drivers/net/usb/sr9800.c
    @@ -421,6 +421,9 @@ sr_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 |= SR_MONITOR_LINK;
    if (wolinfo->wolopts & WAKE_MAGIC)
    --
    2.17.1
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