openwrt/target/linux/generic/backport-6.6/717-v6.9-net-phy-qca807x-move-interface-mode-check-to-.config.patch

From 3be0d950b62852a693182cb678948f481de02825 Mon Sep 17 00:00:00 2001
From: Robert Marko <[email protected]>
Date: Mon, 12 Feb 2024 12:49:34 +0100
Subject: [PATCH] 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 <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Paolo Abeni <[email protected]>
---
 drivers/net/phy/qcom/qca807x.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

--- a/drivers/net/phy/qcom/qca807x.c
+++ b/drivers/net/phy/qcom/qca807x.c
@@ -562,6 +562,11 @@ static int qca807x_phy_package_config_in
 	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_devi
 	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;