netdev - [PATCH net-next 4/9] net: stmmac: intel: convert to suspend()/resume() methods

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Message-Id: <E1ulXbm-008gqs-P9@rmk-PC.armlinux.org.uk>
Date: Mon, 11 Aug 2025 19:50:58 +0100
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Matthias Brugger <matthias.bgg@...il.com>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 4/9] net: stmmac: intel: convert to
 suspend()/resume() methods

Convert intel to use the new suspend() and resume() methods rather
than implementing these in custom wrappers around the main driver's
suspend/resume methods. This allows this driver to use the stmmac
simple PM ops structure.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 .../net/ethernet/stmicro/stmmac/dwmac-intel.c | 74 +++++++++----------
 1 file changed, 35 insertions(+), 39 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
index ea33ae39be6b..3fac3945cbfa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
@@ -1231,6 +1231,37 @@ static int stmmac_config_multi_msi(struct pci_dev *pdev,
 	return 0;
 }
 
+static int intel_eth_pci_suspend(struct device *dev, void *bsp_priv)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int ret;
+
+	ret = pci_save_state(pdev);
+	if (ret)
+		return ret;
+
+	pci_wake_from_d3(pdev, true);
+	pci_set_power_state(pdev, PCI_D3hot);
+	return 0;
+}
+
+static int intel_eth_pci_resume(struct device *dev, void *bsp_priv)
+{
+	struct pci_dev *pdev = to_pci_dev(dev);
+	int ret;
+
+	pci_restore_state(pdev);
+	pci_set_power_state(pdev, PCI_D0);
+
+	ret = pcim_enable_device(pdev);
+	if (ret)
+		return ret;
+
+	pci_set_master(pdev);
+
+	return 0;
+}
+
 /**
  * intel_eth_pci_probe
  *
@@ -1292,6 +1323,9 @@ static int intel_eth_pci_probe(struct pci_dev *pdev,
 	pci_set_master(pdev);
 
 	plat->bsp_priv = intel_priv;
+	plat->suspend = intel_eth_pci_suspend;
+	plat->resume = intel_eth_pci_resume;
+
 	intel_priv->mdio_adhoc_addr = INTEL_MGBE_ADHOC_ADDR;
 	intel_priv->crossts_adj = 1;
 
@@ -1355,44 +1389,6 @@ static void intel_eth_pci_remove(struct pci_dev *pdev)
 	clk_unregister_fixed_rate(priv->plat->stmmac_clk);
 }
 
-static int __maybe_unused intel_eth_pci_suspend(struct device *dev)
-{
-	struct pci_dev *pdev = to_pci_dev(dev);
-	int ret;
-
-	ret = stmmac_suspend(dev);
-	if (ret)
-		return ret;
-
-	ret = pci_save_state(pdev);
-	if (ret)
-		return ret;
-
-	pci_wake_from_d3(pdev, true);
-	pci_set_power_state(pdev, PCI_D3hot);
-	return 0;
-}
-
-static int __maybe_unused intel_eth_pci_resume(struct device *dev)
-{
-	struct pci_dev *pdev = to_pci_dev(dev);
-	int ret;
-
-	pci_restore_state(pdev);
-	pci_set_power_state(pdev, PCI_D0);
-
-	ret = pcim_enable_device(pdev);
-	if (ret)
-		return ret;
-
-	pci_set_master(pdev);
-
-	return stmmac_resume(dev);
-}
-
-static SIMPLE_DEV_PM_OPS(intel_eth_pm_ops, intel_eth_pci_suspend,
-			 intel_eth_pci_resume);
-
 #define PCI_DEVICE_ID_INTEL_QUARK		0x0937
 #define PCI_DEVICE_ID_INTEL_EHL_RGMII1G		0x4b30
 #define PCI_DEVICE_ID_INTEL_EHL_SGMII1G		0x4b31
@@ -1442,7 +1438,7 @@ static struct pci_driver intel_eth_pci_driver = {
 	.probe = intel_eth_pci_probe,
 	.remove = intel_eth_pci_remove,
 	.driver         = {
-		.pm     = &intel_eth_pm_ops,
+		.pm     = &stmmac_simple_pm_ops,
 	},
 };
 
-- 
2.30.2