netdev - [PATCH net-next] net: phylink: handle NA interface mode in phylink_fwnode_phy

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Message-Id: <E1mo6kA-008ZGa-Ut@rmk-PC.armlinux.org.uk>
Date:   Fri, 19 Nov 2021 16:28:06 +0000
From:   "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org
Subject: [PATCH net-next] net: phylink: handle NA interface mode in
 phylink_fwnode_phy_connect()

Commit 4904b6ea1f9db ("net: phy: phylink: Use PHY device interface if
N/A") introduced handling for the phy interface mode where this is not
known at phylink creation time. This was never added to the OF/fwnode
paths, but is necessary when the phy is present in DT, but the phy-mode
is not specified.

Add this handling.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
Hi Florian,

It owuld be useful to have your ACK for this since you were the original
author for the above referenced commit. Thanks!

 drivers/net/phy/phylink.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index da17b874a5e7..f34550c8e90d 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1325,7 +1325,8 @@ static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy,
 	mutex_unlock(&phy->lock);
 
 	phylink_dbg(pl,
-		    "phy: setting supported %*pb advertising %*pb\n",
+		    "phy: %s setting supported %*pb advertising %*pb\n",
+		    phy_modes(interface),
 		    __ETHTOOL_LINK_MODE_MASK_NBITS, pl->supported,
 		    __ETHTOOL_LINK_MODE_MASK_NBITS, phy->advertising);
 
@@ -1443,6 +1444,12 @@ int phylink_fwnode_phy_connect(struct phylink *pl,
 	if (!phy_dev)
 		return -ENODEV;
 
+	/* Use PHY device/driver interface */
+	if (pl->link_interface == PHY_INTERFACE_MODE_NA) {
+		pl->link_interface = phy_dev->interface;
+		pl->link_config.interface = pl->link_interface;
+	}
+
 	ret = phy_attach_direct(pl->netdev, phy_dev, flags,
 				pl->link_interface);
 	if (ret) {
-- 
2.30.2