linux-kernel - [PATCH net-next] net: phy: qca807x: move interface mode check to .config_init

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Date: Mon, 12 Feb 2024 12:49:34 +0100
From: Robert Marko <robimarko@...il.com>
To: andersson@...nel.org,
	konrad.dybcio@...aro.org,
	andrew@...n.ch,
	hkallweit1@...il.com,
	linux@...linux.org.uk,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	ansuelsmth@...il.com,
	linux-arm-msm@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Robert Marko <robimarko@...il.com>
Subject: [PATCH net-next] net: phy: qca807x: move interface mode check to .config_init_once

Currently, we are checking whether the PHY package mode matches the
individual PHY interface modes at PHY package probe time, but at that time
we only know the PHY package mode and not the individual PHY interface
modes as of_get_phy_mode() that populates it will only get called once the
netdev to which PHY-s are attached to is being probed and thus this check
will always fail and return -EINVAL.

So, lets move this check to .config_init_once as at that point individual
PHY interface modes should be populated.

Fixes: d1cb613efbd3 ("net: phy: qcom: add support for QCA807x PHY Family")
Signed-off-by: Robert Marko <robimarko@...il.com>
---
 drivers/net/phy/qcom/qca807x.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/qcom/qca807x.c b/drivers/net/phy/qcom/qca807x.c
index 01815f947060..780c28e2e4aa 100644
--- a/drivers/net/phy/qcom/qca807x.c
+++ b/drivers/net/phy/qcom/qca807x.c
@@ -562,6 +562,11 @@ static int qca807x_phy_package_config_init_once(struct phy_device *phydev)
 	struct qca807x_shared_priv *priv = shared->priv;
 	int val, ret;
 
+	/* Make sure PHY follow PHY package mode if enforced */
+	if (priv->package_mode != PHY_INTERFACE_MODE_NA &&
+	    phydev->interface != priv->package_mode)
+		return -EINVAL;
+
 	phy_lock_mdio_bus(phydev);
 
 	/* Set correct PHY package mode */
@@ -718,11 +723,6 @@ static int qca807x_probe(struct phy_device *phydev)
 	shared = phydev->shared;
 	shared_priv = shared->priv;
 
-	/* Make sure PHY follow PHY package mode if enforced */
-	if (shared_priv->package_mode != PHY_INTERFACE_MODE_NA &&
-	    phydev->interface != shared_priv->package_mode)
-		return -EINVAL;
-
 	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
-- 
2.43.0