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Commit d2ed0a77 authored by Johan Hovold's avatar Johan Hovold Committed by David S. Miller
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net: ethernet: stmmac: fix of-node and fixed-link-phydev leaks 



Make sure to deregister and free any fixed-link phy registered during
probe on probe errors and on driver unbind by adding a new glue helper
function.

Drop the of-node reference taken in the same path also on late probe
errors (and not just on driver unbind) by moving the put from
stmmac_dvr_remove() to the new helper.

Fixes: 27732381 ("stmmac: add fixed-link device-tree support")
Fixes: 4613b279 ("ethernet: stmicro: stmmac: add missing of_node_put
after calling of_parse_phandle")
Signed-off-by: default avatarJohan Hovold <johan@kernel.org>
Acked-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 661f049b

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

+4 −1
Original line number Diff line number Diff line
@@ -50,7 +50,7 @@ static int dwmac_generic_probe(struct platform_device *pdev) 
	if (plat_dat->init) {

		ret = plat_dat->init(pdev, plat_dat->bsp_priv);

		if (ret)

			return ret;

			goto err_remove_config_dt;

	}



	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
@@ -62,6 +62,9 @@ static int dwmac_generic_probe(struct platform_device *pdev) 
err_exit:

	if (plat_dat->exit)

		plat_dat->exit(pdev, plat_dat->bsp_priv);

err_remove_config_dt:

	if (pdev->dev.of_node)

		stmmac_remove_config_dt(pdev, plat_dat);



	return ret;

}

drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c

+19 −6
Original line number Diff line number Diff line
@@ -271,15 +271,17 @@ static int ipq806x_gmac_probe(struct platform_device *pdev) 
		return PTR_ERR(plat_dat);



	gmac = devm_kzalloc(dev, sizeof(*gmac), GFP_KERNEL);

	if (!gmac)

		return -ENOMEM;

	if (!gmac) {

		err = -ENOMEM;

		goto err_remove_config_dt;

	}



	gmac->pdev = pdev;



	err = ipq806x_gmac_of_parse(gmac);

	if (err) {

		dev_err(dev, "device tree parsing error\n");

		return err;

		goto err_remove_config_dt;

	}



	regmap_write(gmac->qsgmii_csr, QSGMII_PCS_CAL_LCKDT_CTL,
@@ -300,7 +302,8 @@ static int ipq806x_gmac_probe(struct platform_device *pdev) 
	default:

		dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",

			phy_modes(gmac->phy_mode));

		return -EINVAL;

		err = -EINVAL;

		goto err_remove_config_dt;

	}

	regmap_write(gmac->nss_common, NSS_COMMON_GMAC_CTL(gmac->id), val);
@@ -319,7 +322,8 @@ static int ipq806x_gmac_probe(struct platform_device *pdev) 
	default:

		dev_err(&pdev->dev, "Unsupported PHY mode: \"%s\"\n",

			phy_modes(gmac->phy_mode));

		return -EINVAL;

		err = -EINVAL;

		goto err_remove_config_dt;

	}

	regmap_write(gmac->nss_common, NSS_COMMON_CLK_SRC_CTRL, val);
@@ -346,7 +350,16 @@ static int ipq806x_gmac_probe(struct platform_device *pdev) 
	plat_dat->bsp_priv = gmac;

	plat_dat->fix_mac_speed = ipq806x_gmac_fix_mac_speed;



	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);

	err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);

	if (err)

		goto err_remove_config_dt;



	return 0;



err_remove_config_dt:

	stmmac_remove_config_dt(pdev, plat_dat);



	return err;

}



static const struct of_device_id ipq806x_gmac_dwmac_match[] = {

drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c

+14 −3
Original line number Diff line number Diff line
@@ -46,7 +46,8 @@ static int lpc18xx_dwmac_probe(struct platform_device *pdev) 
	reg = syscon_regmap_lookup_by_compatible("nxp,lpc1850-creg");

	if (IS_ERR(reg)) {

		dev_err(&pdev->dev, "syscon lookup failed\n");

		return PTR_ERR(reg);

		ret = PTR_ERR(reg);

		goto err_remove_config_dt;

	}



	if (plat_dat->interface == PHY_INTERFACE_MODE_MII) {
@@ -55,13 +56,23 @@ static int lpc18xx_dwmac_probe(struct platform_device *pdev) 
		ethmode = LPC18XX_CREG_CREG6_ETHMODE_RMII;

	} else {

		dev_err(&pdev->dev, "Only MII and RMII mode supported\n");

		return -EINVAL;

		ret = -EINVAL;

		goto err_remove_config_dt;

	}



	regmap_update_bits(reg, LPC18XX_CREG_CREG6,

			   LPC18XX_CREG_CREG6_ETHMODE_MASK, ethmode);



	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);

	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);

	if (ret)

		goto err_remove_config_dt;



	return 0;



err_remove_config_dt:

	stmmac_remove_config_dt(pdev, plat_dat);



	return ret;

}



static const struct of_device_id lpc18xx_dwmac_match[] = {

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

+18 −5
Original line number Diff line number Diff line
@@ -64,18 +64,31 @@ static int meson6_dwmac_probe(struct platform_device *pdev) 
		return PTR_ERR(plat_dat);



	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);

	if (!dwmac)

		return -ENOMEM;

	if (!dwmac) {

		ret = -ENOMEM;

		goto err_remove_config_dt;

	}



	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);

	dwmac->reg = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(dwmac->reg))

		return PTR_ERR(dwmac->reg);

	if (IS_ERR(dwmac->reg)) {

		ret = PTR_ERR(dwmac->reg);

		goto err_remove_config_dt;

	}



	plat_dat->bsp_priv = dwmac;

	plat_dat->fix_mac_speed = meson6_dwmac_fix_mac_speed;



	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);

	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);

	if (ret)

		goto err_remove_config_dt;



	return 0;



err_remove_config_dt:

	stmmac_remove_config_dt(pdev, plat_dat);



	return ret;

}



static const struct of_device_id meson6_dwmac_match[] = {

drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c

+14 −7
Original line number Diff line number Diff line
@@ -264,28 +264,33 @@ static int meson8b_dwmac_probe(struct platform_device *pdev) 
		return PTR_ERR(plat_dat);



	dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL);

	if (!dwmac)

		return -ENOMEM;

	if (!dwmac) {

		ret = -ENOMEM;

		goto err_remove_config_dt;

	}



	res = platform_get_resource(pdev, IORESOURCE_MEM, 1);

	dwmac->regs = devm_ioremap_resource(&pdev->dev, res);

	if (IS_ERR(dwmac->regs))

		return PTR_ERR(dwmac->regs);

	if (IS_ERR(dwmac->regs)) {

		ret = PTR_ERR(dwmac->regs);

		goto err_remove_config_dt;

	}



	dwmac->pdev = pdev;

	dwmac->phy_mode = of_get_phy_mode(pdev->dev.of_node);

	if (dwmac->phy_mode < 0) {

		dev_err(&pdev->dev, "missing phy-mode property\n");

		return -EINVAL;

		ret = -EINVAL;

		goto err_remove_config_dt;

	}



	ret = meson8b_init_clk(dwmac);

	if (ret)

		return ret;

		goto err_remove_config_dt;



	ret = meson8b_init_prg_eth(dwmac);

	if (ret)

		return ret;

		goto err_remove_config_dt;



	plat_dat->bsp_priv = dwmac;
@@ -297,6 +302,8 @@ static int meson8b_dwmac_probe(struct platform_device *pdev) 


err_clk_disable:

	clk_disable_unprepare(dwmac->m25_div_clk);

err_remove_config_dt:

	stmmac_remove_config_dt(pdev, plat_dat);



	return ret;

}