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drivers/atm: introduce missing kfree

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Error handling code following a kmalloc should free the allocated data.

The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,l;
position p1,p2;
expression *ptr != NULL;
@@

(
if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S
|
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
)
<... when != x
     when != if (...) { <+...x...+> }
x->f = E
...>
(
 return \(0\|<+...x...+>\|ptr\);
|
 return@p2 ...;
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julia Lawall 2009-02-08 17:00:02 -08:00 committed by David S. Miller
parent 0b492fce3d
commit bc111d570b
1 changed files with 1 additions and 0 deletions
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1
drivers/atm/solos-pci.c
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@ -685,6 +685,7 @@ static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
out_release_regions: out_release_regions:
pci_release_regions(dev); pci_release_regions(dev);
out: out:
kfree(card);
return err; return err;
} }