[net-next,v3,1/5] net: stmmac: socfpga: init dwmac->stmmac_rst before registration

Commit Message

Russell King (Oracle) April 17, 2025, 5:13 p.m. UTC

Initialisation/setup after registration is a bug. This is the first of
two patches fixing this in socfpga.

dwmac->stmmac_rst is initialised from the stmmac plat_dat's stmmac_rst
member, which is itself initialised by devm_stmmac_probe_config_dt().
Therefore, this can be initialised before we call stmmac_dvr_probe().
Move it there.

dwmac->stmmac_rst is used by the set_phy_mode() method.

Signed-off-by: Russell King (Oracle) <[e-mail]>
---
 .../net/ethernet/stmicro/stmmac/dwmac-socfpga.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index 116855658559..bcdb25ee2a33 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -442,8 +442,6 @@  static int socfpga_dwmac_probe(struct platform_device *pdev)
 	struct device		*dev = &pdev->dev;
 	int			ret;
 	struct socfpga_dwmac	*dwmac;
-	struct net_device	*ndev;
-	struct stmmac_priv	*stpriv;
 	const struct socfpga_dwmac_ops *ops;
 
 	ops = device_get_match_data(&pdev->dev);
@@ -479,7 +477,13 @@  static int socfpga_dwmac_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	/* The socfpga driver needs to control the stmmac reset to set the phy
+	 * mode. Create a copy of the core reset handle so it can be used by
+	 * the driver later.
+	 */
+	dwmac->stmmac_rst = plat_dat->stmmac_rst;
 	dwmac->ops = ops;
+
 	plat_dat->bsp_priv = dwmac;
 	plat_dat->fix_mac_speed = socfpga_dwmac_fix_mac_speed;
 	plat_dat->pcs_init = socfpga_dwmac_pcs_init;
@@ -493,15 +497,6 @@  static int socfpga_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ndev = platform_get_drvdata(pdev);
-	stpriv = netdev_priv(ndev);
-
-	/* The socfpga driver needs to control the stmmac reset to set the phy
-	 * mode. Create a copy of the core reset handle so it can be used by
-	 * the driver later.
-	 */
-	dwmac->stmmac_rst = stpriv->plat->stmmac_rst;
-
 	ret = ops->set_phy_mode(dwmac);
 	if (ret)
 		goto err_dvr_remove;