netdev - [PATCH RFC net-next 3/7] net: stmmac: remove redundant WoL option validation

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Message-Id: <E1ugQ2o-006KD9-EB@rmk-PC.armlinux.org.uk>
Date: Mon, 28 Jul 2025 16:45:42 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH RFC net-next 3/7] net: stmmac: remove redundant WoL option
 validation

The core ethtool API validates the WoL options passed from userspace
against the support which the driver reports from its get_wol() method,
returning EINVAL if an unsupported mode is requested.

Therefore, there is no need for stmmac to implement its own validation.
Remove this unnecessary code.

See ethnl_set_wol() in net/ethtool/wol.c and ethtool_set_wol() in
net/ethtool/ioctl.c.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
index dda7ba1f524d..cd2fb92ac84c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
@@ -803,7 +803,6 @@ static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 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;
@@ -816,15 +815,6 @@ static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 		return ret;
 	}
 
-	/* 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 (wol->wolopts & ~support)
-		return -EINVAL;
-
 	if (wol->wolopts) {
 		pr_info("stmmac: wakeup enable\n");
 		device_set_wakeup_enable(priv->device, 1);
-- 
2.30.2