Merge branch 'followup-fixes-for-the-dwmac-and-altera-lynx-conversion'

Maxime Chevallier says:

====================
Followup fixes for the dwmac and altera lynx conversion

Here's yet another version of the cleanup series for the TSE PCS replacement
by PCS Lynx. It includes Kconfig fixups, some missing initialisations
and a slight rework suggested by Russell for the dwmac cleanup sequence,
along with more explicit zeroing of local structures as per MAciej's
review.
====================

Link: https://lore.kernel.org/r/20230607135941.407054-1-maxime.chevallier@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Author: kuba-moo

drivers/net/ethernet/altera/Kconfig

@@ -4,7 +4,7 @@ config ALTERA_TSE
 	depends on HAS_DMA
 	select PHYLIB
 	select PHYLINK
-	select PCS_ALTERA_TSE
+	select PCS_LYNX
 	select MDIO_REGMAP
 	select REGMAP_MMIO
 	help

drivers/net/ethernet/altera/altera_tse_main.c

@@ -1255,6 +1255,8 @@ static int altera_tse_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_free_netdev;
 
+	memset(&pcs_regmap_cfg, 0, sizeof(pcs_regmap_cfg));
+	memset(&mrc, 0, sizeof(mrc));
 	/* SGMII PCS address space. The location can vary depending on how the
 	 * IP is integrated. We can have a resource dedicated to it at a specific
 	 * address space, but if it's not the case, we fallback to the mdiophy0
@@ -1286,6 +1288,7 @@ static int altera_tse_probe(struct platform_device *pdev)
 	mrc.regmap = pcs_regmap;
 	mrc.parent = &pdev->dev;
 	mrc.valid_addr = 0x0;
+	mrc.autoscan = false;
 
 	/* Rx IRQ */
 	priv->rx_irq = platform_get_irq_byname(pdev, "rx_irq");

drivers/net/ethernet/stmicro/stmmac/common.h

@@ -16,7 +16,6 @@
 #include <linux/stmmac.h>
 #include <linux/phy.h>
 #include <linux/pcs/pcs-xpcs.h>
-#include <linux/pcs-lynx.h>
 #include <linux/module.h>
 #if IS_ENABLED(CONFIG_VLAN_8021Q)
 #define STMMAC_VLAN_TAG_USED

drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c

@@ -11,6 +11,7 @@
 #include <linux/phy.h>
 #include <linux/regmap.h>
 #include <linux/mdio/mdio-regmap.h>
+#include <linux/pcs-lynx.h>
 #include <linux/reset.h>
 #include <linux/stmmac.h>
 
@@ -388,7 +389,6 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	struct net_device	*ndev;
 	struct stmmac_priv	*stpriv;
 	const struct socfpga_dwmac_ops *ops;
-	struct regmap_config pcs_regmap_cfg;
 
 	ops = device_get_match_data(&pdev->dev);
 	if (!ops) {
@@ -446,19 +446,22 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_dvr_remove;
 
-	memset(&pcs_regmap_cfg, 0, sizeof(pcs_regmap_cfg));
-	pcs_regmap_cfg.reg_bits = 16;
-	pcs_regmap_cfg.val_bits = 16;
-	pcs_regmap_cfg.reg_shift = REGMAP_UPSHIFT(1);
-
 	/* Create a regmap for the PCS so that it can be used by the PCS driver,
 	 * if we have such a PCS
 	 */
 	if (dwmac->tse_pcs_base) {
+		struct regmap_config pcs_regmap_cfg;
 		struct mdio_regmap_config mrc;
 		struct regmap *pcs_regmap;
 		struct mii_bus *pcs_bus;
 
+		memset(&pcs_regmap_cfg, 0, sizeof(pcs_regmap_cfg));
+		memset(&mrc, 0, sizeof(mrc));
+
+		pcs_regmap_cfg.reg_bits = 16;
+		pcs_regmap_cfg.val_bits = 16;
+		pcs_regmap_cfg.reg_shift = REGMAP_UPSHIFT(1);
+
 		pcs_regmap = devm_regmap_init_mmio(&pdev->dev, dwmac->tse_pcs_base,
 						   &pcs_regmap_cfg);
 		if (IS_ERR(pcs_regmap)) {
@@ -469,6 +472,7 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 		mrc.regmap = pcs_regmap;
 		mrc.parent = &pdev->dev;
 		mrc.valid_addr = 0x0;
+		mrc.autoscan = false;
 
 		snprintf(mrc.name, MII_BUS_ID_SIZE, "%s-pcs-mii", ndev->name);
 		pcs_bus = devm_mdio_regmap_register(&pdev->dev, &mrc);
@@ -494,6 +498,17 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static void socfpga_dwmac_remove(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	struct phylink_pcs *pcs = priv->hw->lynx_pcs;
+
+	stmmac_pltfr_remove(pdev);
+
+	lynx_pcs_destroy(pcs);
+}
+
 #ifdef CONFIG_PM_SLEEP
 static int socfpga_dwmac_resume(struct device *dev)
 {
@@ -565,7 +580,7 @@ MODULE_DEVICE_TABLE(of, socfpga_dwmac_match);
 
 static struct platform_driver socfpga_dwmac_driver = {
 	.probe  = socfpga_dwmac_probe,
-	.remove_new = stmmac_pltfr_remove,
+	.remove_new = socfpga_dwmac_remove,
 	.driver = {
 		.name           = "socfpga-dwmac",
 		.pm		= &socfpga_dwmac_pm_ops,

drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c

@@ -665,9 +665,6 @@ int stmmac_mdio_unregister(struct net_device *ndev)
 	if (priv->hw->xpcs)
 		xpcs_destroy(priv->hw->xpcs);
 
-	if (priv->hw->lynx_pcs)
-		lynx_pcs_destroy(priv->hw->lynx_pcs);
-
 	mdiobus_unregister(priv->mii);
 	priv->mii->priv = NULL;
 	mdiobus_free(priv->mii);