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net: dsa: felix: check return code of mdio_alloc and mdio_register 

These functions can return errors, it's best to catch them and trigger
the driver unwind code path.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
This commit is contained in:
Vladimir Oltean 2021-09-27 14:22:02 +03:00 committed by Ramon Fried
parent 81386ed405
commit c9131fc72b
1 changed files with 9 additions and 1 deletions
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10
drivers/net/mscc_eswitch/felix_switch.c
View File

@ -275,6 +275,7 @@ static void felix_init(struct udevice *dev)
static int felix_probe(struct udevice *dev)
{
struct felix_priv *priv = dev_get_priv(dev);
int err;
if (ofnode_valid(dev_ofnode(dev)) &&
!ofnode_is_available(dev_ofnode(dev))) {
@ -299,11 +300,18 @@ static int felix_probe(struct udevice *dev)
struct mii_dev *mii_bus;
mii_bus = mdio_alloc();
if (!mii_bus)
return -ENOMEM;
mii_bus->read = felix_mdio_read;
mii_bus->write = felix_mdio_write;
mii_bus->priv = priv->imdio_base + FELIX_PM_IMDIO_BASE;
strlcpy(mii_bus->name, dev->name, MDIO_NAME_LEN);
mdio_register(mii_bus);
err = mdio_register(mii_bus);
if (err) {
mdio_free(mii_bus);
return err;
}
}
dm_pci_clrset_config16(dev, PCI_COMMAND, 0, PCI_COMMAND_MEMORY);