linux-kernel - [PATCH 2/2] net: stmmac: Populate netdev of

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Message-Id: <20250717090037.4097520-3-primoz.fiser@norik.com>
Date: Thu, 17 Jul 2025 11:00:37 +0200
From: Primoz Fiser <primoz.fiser@...ik.com>
To: Wei Fang <wei.fang@....com>,
	Shenwei Wang <shenwei.wang@....com>,
	Clark Wang <xiaoning.wang@....com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	davem@...emloft.net,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>
Cc: imx@...ts.linux.dev,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-stm32@...md-mailman.stormreply.com,
	linux-arm-kernel@...ts.infradead.org,
	upstream@...ts.phytec.de
Subject: [PATCH 2/2] net: stmmac: Populate netdev of_node

Populate netdev of_node with device of_node so that the network device
inherits the device tree node information in case of platform device.
On the other hand, when stmmac_dvr_probe() is called from pci device,
of_node will be NULL preserving current behavior.

With this in place, when initiated from platform device, udev will be
able to export OF_* properties (OF_NAME, OF_FULLNAME, OF_COMPATIBLE,
OF_ALIAS, etc) for the network interface. These properties are commonly
used by udev rules and other userspace tools for device identification
and configuration.

Signed-off-by: Primoz Fiser <primoz.fiser@...ik.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index f350a6662880..dfd503a87f22 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7487,6 +7487,7 @@ int stmmac_dvr_probe(struct device *device,
 		return -ENOMEM;
 
 	SET_NETDEV_DEV(ndev, device);
+	ndev->dev.of_node = device->of_node;
 
 	priv = netdev_priv(ndev);
 	priv->device = device;
-- 
2.34.1