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authorDan Carpenter <error27@gmail.com>2010-08-24 06:53:33 +0000
committerDavid S. Miller <davem@davemloft.net>2010-08-24 14:50:26 -0700
commit945c7c73e2e81d68e3e2970afd95254e8f153fc9 (patch)
treecfbeb347dbc281bc786b591396d180f8ef051778 /drivers
parent4169591fd7c260b2b0b4e8f4d51f63f5b15ad78a (diff)
downloadlinux-945c7c73e2e81d68e3e2970afd95254e8f153fc9.tar.bz2
pxa168_eth: fix error handling in prope
A couple issues here: * Some resources weren't released. * If alloc_etherdev() failed it would have caused a NULL dereference because "pep" would be null when we checked "if (pep->clk)". * Also it's better to propagate the error codes from mdiobus_register() instead of just returning -ENOMEM. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/pxa168_eth.c44
1 files changed, 22 insertions, 22 deletions
diff --git a/drivers/net/pxa168_eth.c b/drivers/net/pxa168_eth.c
index 857a68115a5c..302fb480374b 100644
--- a/drivers/net/pxa168_eth.c
+++ b/drivers/net/pxa168_eth.c
@@ -1497,7 +1497,7 @@ static int pxa168_eth_probe(struct platform_device *pdev)
dev = alloc_etherdev(sizeof(struct pxa168_eth_private));
if (!dev) {
err = -ENOMEM;
- goto out;
+ goto err_clk;
}
platform_set_drvdata(pdev, dev);
@@ -1507,12 +1507,12 @@ static int pxa168_eth_probe(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (res == NULL) {
err = -ENODEV;
- goto out;
+ goto err_netdev;
}
pep->base = ioremap(res->start, res->end - res->start + 1);
if (pep->base == NULL) {
err = -ENOMEM;
- goto out;
+ goto err_netdev;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
BUG_ON(!res);
@@ -1549,7 +1549,7 @@ static int pxa168_eth_probe(struct platform_device *pdev)
pep->smi_bus = mdiobus_alloc();
if (pep->smi_bus == NULL) {
err = -ENOMEM;
- goto out;
+ goto err_base;
}
pep->smi_bus->priv = pep;
pep->smi_bus->name = "pxa168_eth smi";
@@ -1558,31 +1558,31 @@ static int pxa168_eth_probe(struct platform_device *pdev)
snprintf(pep->smi_bus->id, MII_BUS_ID_SIZE, "%d", pdev->id);
pep->smi_bus->parent = &pdev->dev;
pep->smi_bus->phy_mask = 0xffffffff;
- if (mdiobus_register(pep->smi_bus) < 0) {
- err = -ENOMEM;
- goto out;
- }
+ err = mdiobus_register(pep->smi_bus);
+ if (err)
+ goto err_free_mdio;
+
pxa168_init_hw(pep);
err = ethernet_phy_setup(dev);
if (err)
- goto out;
+ goto err_mdiobus;
SET_NETDEV_DEV(dev, &pdev->dev);
err = register_netdev(dev);
if (err)
- goto out;
+ goto err_mdiobus;
return 0;
-out:
- if (pep->clk) {
- clk_disable(pep->clk);
- clk_put(pep->clk);
- pep->clk = NULL;
- }
- if (pep->base) {
- iounmap(pep->base);
- pep->base = NULL;
- }
- if (dev)
- free_netdev(dev);
+
+err_mdiobus:
+ mdiobus_unregister(pep->smi_bus);
+err_free_mdio:
+ mdiobus_free(pep->smi_bus);
+err_base:
+ iounmap(pep->base);
+err_netdev:
+ free_netdev(dev);
+err_clk:
+ clk_disable(clk);
+ clk_put(clk);
return err;
}