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2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
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@@ -189,9 +189,10 @@
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 static int ipq806x_gmac_of_parse(struct ipq806x_gmac *gmac)
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 {
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 	struct device *dev = &gmac->pdev->dev;
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+	int ret;
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-	gmac->phy_mode = of_get_phy_mode(dev->of_node);
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-	if ((int)gmac->phy_mode < 0) {
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+	ret = of_get_phy_mode(dev->of_node, &gmac->phy_mode);
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+	if (ret) {
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 		dev_err(dev, "missing phy mode property\n");
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 		return -EINVAL;
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 	}
..
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@@ -288,10 +289,7 @@
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 		val &= ~NSS_COMMON_GMAC_CTL_PHY_IFACE_SEL;
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 		break;
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 	default:
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-		dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",
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-			phy_modes(gmac->phy_mode));
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-		err = -EINVAL;
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-		goto err_remove_config_dt;
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+		goto err_unsupported_phy;
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 	}
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 	regmap_write(gmac->nss_common, NSS_COMMON_GMAC_CTL(gmac->id), val);
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..
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@@ -308,10 +306,7 @@
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 			NSS_COMMON_CLK_SRC_CTRL_OFFSET(gmac->id);
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 		break;
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 	default:
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-		dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",
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-			phy_modes(gmac->phy_mode));
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-		err = -EINVAL;
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-		goto err_remove_config_dt;
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+		goto err_unsupported_phy;
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 	}
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 	regmap_write(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, val);
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..
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@@ -328,8 +323,7 @@
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 				NSS_COMMON_CLK_GATE_GMII_TX_EN(gmac->id);
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 		break;
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 	default:
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-		/* We don't get here; the switch above will have errored out */
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-		unreachable();
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+		goto err_unsupported_phy;
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 	}
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 	regmap_write(gmac->nss_common, NSS_COMMON_CLK_GATE, val);
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329
 
..
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@@ -351,6 +345,8 @@
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 	plat_dat->bsp_priv = gmac;
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 	plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;
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 	plat_dat->multicast_filter_bins = 0;
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+	plat_dat->tx_fifo_size = 8192;
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+	plat_dat->rx_fifo_size = 8192;
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 	err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
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 	if (err)
..
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@@ -358,6 +354,11 @@
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354
 
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 	return 0;
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+err_unsupported_phy:
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+	dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",
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+		phy_modes(gmac->phy_mode));
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+	err = -EINVAL;
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+
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 err_remove_config_dt:
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 	stmmac_remove_config_dt(pdev, plat_dat);
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