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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: 277323814e ("stmmac: add fixed-link device-tree support")
Fixes: 4613b279be ("ethernet: stmicro: stmmac: add missing of_node_put
after calling of_parse_phandle")
Signed-off-by: Johan Hovold <johan@kernel.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Johan Hovold 2016-11-30 15:29:55 +01:00 committed by David S. Miller
parent 661f049be1
commit d2ed0a7755
13 changed files with 156 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/stmicro/stmmac/dwmac-generic.c
View File

@ -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;
}

25
drivers/net/ethernet/stmicro/stmmac/dwmac-ipq806x.c
View File

@ -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[] = {

17
drivers/net/ethernet/stmicro/stmmac/dwmac-lpc18xx.c
View File

@ -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[] = {

23
drivers/net/ethernet/stmicro/stmmac/dwmac-meson.c
View File

@ -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[] = {

21
drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
View File

@ -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;
}

10
drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
View File

@ -981,12 +981,14 @@ static int rk_gmac_probe(struct platform_device *pdev)
plat_dat->resume = rk_gmac_resume;
plat_dat->bsp_priv = rk_gmac_setup(pdev, data);
if (IS_ERR(plat_dat->bsp_priv))
return PTR_ERR(plat_dat->bsp_priv);
if (IS_ERR(plat_dat->bsp_priv)) {
ret = PTR_ERR(plat_dat->bsp_priv);
goto err_remove_config_dt;
}
ret = rk_gmac_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);
if (ret)
@ -996,6 +998,8 @@ static int rk_gmac_probe(struct platform_device *pdev)
err_gmac_exit:
rk_gmac_exit(pdev, plat_dat->bsp_priv);
err_remove_config_dt:
stmmac_remove_config_dt(pdev, plat_dat);
return ret;
}

12
drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
View File

@ -316,13 +316,15 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
return PTR_ERR(plat_dat);
dwmac = devm_kzalloc(dev, sizeof(*dwmac), GFP_KERNEL);
if (!dwmac)
return -ENOMEM;
if (!dwmac) {
ret = -ENOMEM;
goto err_remove_config_dt;
}
ret = socfpga_dwmac_parse_data(dwmac, dev);
if (ret) {
dev_err(dev, "Unable to parse OF data\n");
return ret;
goto err_remove_config_dt;
}
plat_dat->bsp_priv = dwmac;
@ -330,7 +332,7 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
if (ret)
return ret;
goto err_remove_config_dt;
ndev = platform_get_drvdata(pdev);
stpriv = netdev_priv(ndev);
@ -349,6 +351,8 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
err_dvr_remove:
stmmac_dvr_remove(&pdev->dev);
err_remove_config_dt:
stmmac_remove_config_dt(pdev, plat_dat);
return ret;
}

12
drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c
View File

@ -345,13 +345,15 @@ static int sti_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;
}
ret = sti_dwmac_parse_data(dwmac, pdev);
if (ret) {
dev_err(&pdev->dev, "Unable to parse OF data\n");
return ret;
goto err_remove_config_dt;
}
dwmac->fix_retime_src = data->fix_retime_src;
@ -363,7 +365,7 @@ static int sti_dwmac_probe(struct platform_device *pdev)
ret = sti_dwmac_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);
if (ret)
@ -373,6 +375,8 @@ static int sti_dwmac_probe(struct platform_device *pdev)
err_dwmac_exit:
sti_dwmac_exit(pdev, plat_dat->bsp_priv);
err_remove_config_dt:
stmmac_remove_config_dt(pdev, plat_dat);
return ret;
}

19
drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.c
View File

@ -107,24 +107,33 @@ static int stm32_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;
}
ret = stm32_dwmac_parse_data(dwmac, &pdev->dev);
if (ret) {
dev_err(&pdev->dev, "Unable to parse OF data\n");
return ret;
goto err_remove_config_dt;
}
plat_dat->bsp_priv = dwmac;
ret = stm32_dwmac_init(plat_dat);
if (ret)
return ret;
goto err_remove_config_dt;
ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
if (ret)
stm32_dwmac_clk_disable(dwmac);
goto err_clk_disable;
return 0;
err_clk_disable:
stm32_dwmac_clk_disable(dwmac);
err_remove_config_dt:
stmmac_remove_config_dt(pdev, plat_dat);
return ret;
}

26
drivers/net/ethernet/stmicro/stmmac/dwmac-sunxi.c
View File

@ -120,22 +120,27 @@ static int sun7i_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) {
ret = -ENOMEM;
goto err_remove_config_dt;
}
gmac->interface = of_get_phy_mode(dev->of_node);
gmac->tx_clk = devm_clk_get(dev, "allwinner_gmac_tx");
if (IS_ERR(gmac->tx_clk)) {
dev_err(dev, "could not get tx clock\n");
return PTR_ERR(gmac->tx_clk);
ret = PTR_ERR(gmac->tx_clk);
goto err_remove_config_dt;
}
/* Optional regulator for PHY */
gmac->regulator = devm_regulator_get_optional(dev, "phy");
if (IS_ERR(gmac->regulator)) {
if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER)
return -EPROBE_DEFER;
if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER) {
ret = -EPROBE_DEFER;
goto err_remove_config_dt;
}
dev_info(dev, "no regulator found\n");
gmac->regulator = NULL;
}
@ -151,11 +156,18 @@ static int sun7i_gmac_probe(struct platform_device *pdev)
ret = sun7i_gmac_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);
if (ret)
sun7i_gmac_exit(pdev, plat_dat->bsp_priv);
goto err_gmac_exit;
return 0;
err_gmac_exit:
sun7i_gmac_exit(pdev, plat_dat->bsp_priv);
err_remove_config_dt:
stmmac_remove_config_dt(pdev, plat_dat);
return ret;
}

1
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View File

@ -3416,7 +3416,6 @@ int stmmac_dvr_remove(struct device *dev)
stmmac_set_mac(priv->ioaddr, false);
netif_carrier_off(ndev);
unregister_netdev(ndev);
of_node_put(priv->plat->phy_node);
if (priv->stmmac_rst)
reset_control_assert(priv->stmmac_rst);
clk_disable_unprepare(priv->pclk);

32
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
View File

@ -305,7 +305,7 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
dma_cfg = devm_kzalloc(&pdev->dev, sizeof(*dma_cfg),
GFP_KERNEL);
if (!dma_cfg) {
of_node_put(plat->phy_node);
stmmac_remove_config_dt(pdev, plat);
return ERR_PTR(-ENOMEM);
}
plat->dma_cfg = dma_cfg;
@ -328,14 +328,37 @@ stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
return plat;
}
/**
* stmmac_remove_config_dt - undo the effects of stmmac_probe_config_dt()
* @pdev: platform_device structure
* @plat: driver data platform structure
*
* Release resources claimed by stmmac_probe_config_dt().
*/
void stmmac_remove_config_dt(struct platform_device *pdev,
struct plat_stmmacenet_data *plat)
{
struct device_node *np = pdev->dev.of_node;
if (of_phy_is_fixed_link(np))
of_phy_deregister_fixed_link(np);
of_node_put(plat->phy_node);
}
#else
struct plat_stmmacenet_data *
stmmac_probe_config_dt(struct platform_device *pdev, const char **mac)
{
return ERR_PTR(-ENOSYS);
}
void stmmac_remove_config_dt(struct platform_device *pdev,
struct plat_stmmacenet_data *plat)
{
}
#endif /* CONFIG_OF */
EXPORT_SYMBOL_GPL(stmmac_probe_config_dt);
EXPORT_SYMBOL_GPL(stmmac_remove_config_dt);
int stmmac_get_platform_resources(struct platform_device *pdev,
struct stmmac_resources *stmmac_res)
@ -391,10 +414,13 @@ int stmmac_pltfr_remove(struct platform_device *pdev)
{
struct net_device *ndev = platform_get_drvdata(pdev);
struct stmmac_priv *priv = netdev_priv(ndev);
struct plat_stmmacenet_data *plat = priv->plat;
int ret = stmmac_dvr_remove(&pdev->dev);
if (priv->plat->exit)
priv->plat->exit(pdev, priv->plat->bsp_priv);
if (plat->exit)
plat->exit(pdev, plat->bsp_priv);
stmmac_remove_config_dt(pdev, plat);
return ret;
}

2
drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
View File

@ -23,6 +23,8 @@
struct plat_stmmacenet_data *
stmmac_probe_config_dt(struct platform_device *pdev, const char **mac);
void stmmac_remove_config_dt(struct platform_device *pdev,
struct plat_stmmacenet_data *plat);
int stmmac_get_platform_resources(struct platform_device *pdev,
struct stmmac_resources *stmmac_res);