linux-kernel - [PATCH] net: dsa: Fix conditional handling of Wake-on-Lan configuration in dsa_user_set

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Message-ID: <20241004220206.7576-1-pvmohammedanees2003@gmail.com>
Date: Sat,  5 Oct 2024 03:32:06 +0530
From: Mohammed Anees <pvmohammedanees2003@...il.com>
To: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S . Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Russell King <linux@...linux.org.uk>,
	Mohammed Anees <pvmohammedanees2003@...il.com>
Subject: [PATCH] net: dsa: Fix conditional handling of Wake-on-Lan configuration in dsa_user_set_wol

The WOL configuration now checks if the DSA switch supports setting WOL
before attempting to apply settings via phylink. This prevents
unnecessary calls to phylink_ethtool_set_wol when WOL is not supported.

Signed-off-by: Mohammed Anees <pvmohammedanees2003@...il.com>
---
 net/dsa/user.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/dsa/user.c b/net/dsa/user.c
index 74eda9b30608..c685ccea9ddf 100644
--- a/net/dsa/user.c
+++ b/net/dsa/user.c
@@ -1217,10 +1217,12 @@ static int dsa_user_set_wol(struct net_device *dev, struct ethtool_wolinfo *w)
 	struct dsa_switch *ds = dp->ds;
 	int ret = -EOPNOTSUPP;
 
-	phylink_ethtool_set_wol(dp->pl, w);
-
-	if (ds->ops->set_wol)
+	if (ds->ops->set_wol) {
 		ret = ds->ops->set_wol(ds, dp->index, w);
+		if (ret)
+			return ret;
+		phylink_ethtool_set_wol(dp->pl, w);
+	}
 
 	return ret;
 }
-- 
2.46.0