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net: usb: lan78xx: Fix refcounting and autosuspend on invalid WoL configuration

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Validate Wake-on-LAN (WoL) options in `lan78xx_set_wol` before calling
`usb_autopm_get_interface`. This prevents USB autopm refcounting issues
and ensures the adapter can properly enter autosuspend when invalid WoL
options are provided.

Fixes: eb9ad088f9 ("lan78xx: Check for supported Wake-on-LAN modes")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://patch.msgid.link/20241118140351.2398166-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Oleksij Rempel 2024-11-18 15:03:51 +01:00 committed by Jakub Kicinski
parent 614f4d166e
commit e863ff806f
1 changed files with 3 additions and 3 deletions
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6
drivers/net/usb/lan78xx.c
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@ -1652,13 +1652,13 @@ static int lan78xx_set_wol(struct net_device *netdev,
struct lan78xx_priv *pdata = (struct lan78xx_priv *)(dev->data[0]);
int ret;
if (wol->wolopts & ~WAKE_ALL)
return -EINVAL;
ret = usb_autopm_get_interface(dev->intf);
if (ret < 0)
return ret;
if (wol->wolopts & ~WAKE_ALL)
return -EINVAL;
pdata->wol = wol->wolopts;
device_set_wakeup_enable(&dev->udev->dev, (bool)wol->wolopts);