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net: stmmac: Move device_can_wakeup() check earlier in set_wol

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If !device_can_wakeup(), there's no need to futher check. And return
-EOPNOTSUPP rather than -EINVAL if !device_can_wakeup().

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jisheng Zhang 2020-07-27 19:02:13 +08:00 committed by David S. Miller
parent 1057d685c6
commit 2f45f7a13e
1 changed files with 3 additions and 3 deletions
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6
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
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@ -615,15 +615,15 @@ static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
struct stmmac_priv *priv = netdev_priv(dev);
u32 support = WAKE_MAGIC | WAKE_UCAST;
if (!device_can_wakeup(priv->device))
return -EOPNOTSUPP;
/* By default almost all GMAC devices support the WoL via
* magic frame but we can disable it if the HW capability
* register shows no support for pmt_magic_frame. */
if ((priv->hw_cap_support) && (!priv->dma_cap.pmt_magic_frame))
wol->wolopts &= ~WAKE_MAGIC;
if (!device_can_wakeup(priv->device))
return -EINVAL;
if (wol->wolopts & ~support)
return -EINVAL;