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ieee802154: fix error handling in ieee802154fake_probe()

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[ Upstream commit 8c2dd54485 ]

In case of any failure ieee802154fake_probe() just calls unregister_netdev().
But it does not look safe to unregister netdevice before it was registered.

The patch implements straightforward resource deallocation in case of
failure in ieee802154fake_probe().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
This commit is contained in:
Alexey Khoroshilov
2014-11-15 02:11:59 +03:00
committed by Jiri Slaby
parent 8cdc2cb0cf
commit 0d55bc1cf5
1 changed files with 8 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
drivers/net/ieee802154/fakehard.c
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@@ -376,17 +376,20 @@ static int ieee802154fake_probe(struct platform_device *pdev)
err = wpan_phy_register(phy);
if (err)
goto out;
goto err_phy_reg;
err = register_netdev(dev);
if (err < 0)
goto out;
if (err)
goto err_netdev_reg;
dev_info(&pdev->dev, "Added ieee802154 HardMAC hardware\n");
return 0;
out:
unregister_netdev(dev);
err_netdev_reg:
wpan_phy_unregister(phy);
err_phy_reg:
free_netdev(dev);
wpan_phy_free(phy);
return err;
}