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drivers/net/ethernet/sis/sis900.c: fix error return code

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The function sis900_probe() return 0 for success and negative value
for most of its internal tests failures. There is one exception
that is error case going to err_out_cleardev:. Fore this error case,
the function abort its success execution path, but returns non negative
value, making it difficult for a caller function to notice the error.

This patch fixes the error case that do not return negative value.

This was found by Coccinelle, but the code change was made by hand.
This patch is not robot generated.

A simplified version of the semantic match that finds this problem is
as follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Peter Senna Tschudin 2012-10-05 10:41:07 +00:00 committed by David S. Miller
parent 52428d9169
commit 0968a9d1c8
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/sis/sis900.c
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@ -478,8 +478,10 @@ static int __devinit sis900_probe(struct pci_dev *pci_dev,
/* IO region. */
ioaddr = pci_iomap(pci_dev, 0, 0);
if (!ioaddr)
if (!ioaddr) {
ret = -ENOMEM;
goto err_out_cleardev;
}
sis_priv = netdev_priv(net_dev);
sis_priv->ioaddr = ioaddr;