netdev - [PATCH net-next 10/10] net: dsa: bcm_sf2: drop priv->master_mii

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Message-Id: <20240104140037.374166-11-vladimir.oltean@nxp.com>
Date: Thu,  4 Jan 2024 16:00:37 +0200
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Andrew Lunn <andrew@...n.ch>,
	Florian Fainelli <f.fainelli@...il.com>,
	Luiz Angelo Daros de Luca <luizluca@...il.com>,
	Alvin Šipraga <alsi@...g-olufsen.dk>,
	Linus Walleij <linus.walleij@...aro.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Hauke Mehrtens <hauke@...ke-m.de>,
	Christian Marangi <ansuelsmth@...il.com>,
	Arınç ÜNAL <arinc.unal@...nc9.com>
Subject: [PATCH net-next 10/10] net: dsa: bcm_sf2: drop priv->master_mii_dn

There used to be a of_node_put(priv->master_mii_dn) call in
bcm_sf2_mdio_unregister(), which was accidentally deleted in commit
6ca80638b90c ("net: dsa: Use conduit and user terms").

But it's not needed - we don't need to hold a reference on the
"brcm,unimac-mdio" OF node for that long, since we don't do anything
with it. We can release it as soon as we finish bcm_sf2_mdio_register().

Also reduce "if (err && dn)" to just "if (err)". We know "dn", aka the
former priv->master_mii_dn, is non-NULL. Otherwise, of_mdio_find_bus(dn)
would not have been able to find the bus behind "brcm,unimac-mdio".

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/dsa/bcm_sf2.c | 6 +++---
 drivers/net/dsa/bcm_sf2.h | 1 -
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 19b325fa5a27..4a52ccbe393f 100644
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -621,8 +621,6 @@ static int bcm_sf2_mdio_register(struct dsa_switch *ds)
 		goto err_of_node_put;
 	}
 
-	priv->master_mii_dn = dn;
-
 	priv->user_mii_bus = mdiobus_alloc();
 	if (!priv->user_mii_bus) {
 		err = -ENOMEM;
@@ -682,9 +680,11 @@ static int bcm_sf2_mdio_register(struct dsa_switch *ds)
 	}
 
 	err = mdiobus_register(priv->user_mii_bus);
-	if (err && dn)
+	if (err)
 		goto err_free_user_mii_bus;
 
+	of_node_put(dn);
+
 	return 0;
 
 err_free_user_mii_bus:
diff --git a/drivers/net/dsa/bcm_sf2.h b/drivers/net/dsa/bcm_sf2.h
index 424f896b5a6f..f95f4880b69e 100644
--- a/drivers/net/dsa/bcm_sf2.h
+++ b/drivers/net/dsa/bcm_sf2.h
@@ -107,7 +107,6 @@ struct bcm_sf2_priv {
 
 	/* Master and slave MDIO bus controller */
 	unsigned int			indir_phy_mask;
-	struct device_node		*master_mii_dn;
 	struct mii_bus			*user_mii_bus;
 	struct mii_bus			*master_mii_bus;
 
-- 
2.34.1