netdev - Re: [PATCH net-next 0/5] net: stmmac: socfpga: fix init ordering and cleanups

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Message-ID: <Z_9oVrAOnInrhb6z@shell.armlinux.org.uk>
Date: Wed, 16 Apr 2025 09:20:38 +0100
From: "Russell King (Oracle)" <linux@...linux.org.uk>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
	Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>, netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: Re: [PATCH net-next 0/5] net: stmmac: socfpga: fix init ordering and
 cleanups

On Wed, Apr 16, 2025 at 09:53:43AM +0200, Maxime Chevallier wrote:
> I've given this a try and unfortunately :

Great, someone with hardware, and who responds to patches! :)

> This is only to get the phymode, maybe we should do like dwmac_imx
> and store a pointer to plat_dat into struct dwmac_socfpga, so that we
> can get it back in dwmac_init ? I've tried with the patch below and it
> does solve the issue, but maybe you have a better approach.

Yes, but I don't think we need such a big patch:

 drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 8e6d780669b9..59f90b123c5b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -50,6 +50,7 @@ struct socfpga_dwmac {
 	u32	reg_offset;
 	u32	reg_shift;
 	struct	device *dev;
+	struct plat_stmmacenet_data *plat_dat;
 	struct regmap *sys_mgr_base_addr;
 	struct reset_control *stmmac_rst;
 	struct reset_control *stmmac_ocp_rst;
@@ -233,10 +234,7 @@ static int socfpga_dwmac_parse_data(struct socfpga_dwmac *dwmac, struct device *
 
 static int socfpga_get_plat_phymode(struct socfpga_dwmac *dwmac)
 {
-	struct net_device *ndev = dev_get_drvdata(dwmac->dev);
-	struct stmmac_priv *priv = netdev_priv(ndev);
-
-	return priv->plat->mac_interface;
+	return dwmac->plat_dat->mac_interface;
 }
 
 static void socfpga_sgmii_config(struct socfpga_dwmac *dwmac, bool enable)
@@ -490,6 +488,7 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	 */
 	dwmac->stmmac_rst = plat_dat->stmmac_rst;
 	dwmac->ops = ops;
+	dwmac->plat_dat = plat_dat;
 
 	plat_dat->bsp_priv = dwmac;
 	plat_dat->fix_mac_speed = socfpga_dwmac_fix_mac_speed;

-- 
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