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authorKulikov Vasiliy <segooon@gmail.com>2010-07-08 23:44:26 -0700
committerDavid S. Miller <davem@davemloft.net>2010-07-08 23:44:26 -0700
commitfabc51a640b35a771b6c75d2186193fdaf25cf56 (patch)
tree7437ca89bfb52f27a3dd25b93469b3c065de116d /drivers/net
parentll_temac: fix memory leak (diff)
downloadlinux-dev-fabc51a640b35a771b6c75d2186193fdaf25cf56.tar.xz
linux-dev-fabc51a640b35a771b6c75d2186193fdaf25cf56.zip
fec_mpc52xx: fix error path
Error path in mpc52xx_fec_probe() is broken. We must free everything that we've allocated. Signed-off-by: Kulikov Vasiliy <segooon@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/fec_mpc52xx.c38
1 files changed, 17 insertions, 21 deletions
diff --git a/drivers/net/fec_mpc52xx.c b/drivers/net/fec_mpc52xx.c
index 25e6cc6840b1..5f8346369b80 100644
--- a/drivers/net/fec_mpc52xx.c
+++ b/drivers/net/fec_mpc52xx.c
@@ -875,17 +875,21 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
if (rv) {
printk(KERN_ERR DRIVER_NAME ": "
"Error while parsing device node resource\n" );
- return rv;
+ goto err_netdev;
}
if ((mem.end - mem.start + 1) < sizeof(struct mpc52xx_fec)) {
printk(KERN_ERR DRIVER_NAME
" - invalid resource size (%lx < %x), check mpc52xx_devices.c\n",
(unsigned long)(mem.end - mem.start + 1), sizeof(struct mpc52xx_fec));
- return -EINVAL;
+ rv = -EINVAL;
+ goto err_netdev;
}
- if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec), DRIVER_NAME))
- return -EBUSY;
+ if (!request_mem_region(mem.start, sizeof(struct mpc52xx_fec),
+ DRIVER_NAME)) {
+ rv = -EBUSY;
+ goto err_netdev;
+ }
/* Init ether ndev with what we have */
ndev->netdev_ops = &mpc52xx_fec_netdev_ops;
@@ -901,7 +905,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
if (!priv->fec) {
rv = -ENOMEM;
- goto probe_error;
+ goto err_mem_region;
}
/* Bestcomm init */
@@ -914,7 +918,7 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
if (!priv->rx_dmatsk || !priv->tx_dmatsk) {
printk(KERN_ERR DRIVER_NAME ": Can not init SDMA tasks\n" );
rv = -ENOMEM;
- goto probe_error;
+ goto err_rx_tx_dmatsk;
}
/* Get the IRQ we need one by one */
@@ -966,33 +970,25 @@ mpc52xx_fec_probe(struct of_device *op, const struct of_device_id *match)
rv = register_netdev(ndev);
if (rv < 0)
- goto probe_error;
+ goto err_node;
/* We're done ! */
dev_set_drvdata(&op->dev, ndev);
return 0;
-
- /* Error handling - free everything that might be allocated */
-probe_error:
-
- if (priv->phy_node)
- of_node_put(priv->phy_node);
- priv->phy_node = NULL;
-
+err_node:
+ of_node_put(priv->phy_node);
irq_dispose_mapping(ndev->irq);
-
+err_rx_tx_dmatsk:
if (priv->rx_dmatsk)
bcom_fec_rx_release(priv->rx_dmatsk);
if (priv->tx_dmatsk)
bcom_fec_tx_release(priv->tx_dmatsk);
-
- if (priv->fec)
- iounmap(priv->fec);
-
+ iounmap(priv->fec);
+err_mem_region:
release_mem_region(mem.start, sizeof(struct mpc52xx_fec));
-
+err_netdev:
free_netdev(ndev);
return rv;