diff options
| author | Julia Lawall <julia@diku.dk> | 2011-12-23 18:39:27 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-01-04 14:30:46 -0500 |
| commit | 841f1d92fb8ca6aa70b56003d1da8874c593e820 (patch) | |
| tree | c161f16d86525f4256253045c01307c329d3e4da /net | |
| parent | 016c2177918301c9a2557c675c12ab88667a27bb (diff) | |
| download | lwn-841f1d92fb8ca6aa70b56003d1da8874c593e820.tar.gz lwn-841f1d92fb8ca6aa70b56003d1da8874c593e820.zip | |
net/rfkill/rfkill-gpio.c: introduce missing kfree
Error handling code following a kmalloc should free the allocated data.
The label fail_alloc already does this for rfkill.
A simplified version of the semantic match that finds the problem is as
follows: (http://coccinelle.lip6.fr)
// <smpl>
@r exists@
local idexpression x;
statement S;
identifier f1;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
x->f1
...>
(
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: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/rfkill/rfkill-gpio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c index ca355e7e58b4..865adb61685a 100644 --- a/net/rfkill/rfkill-gpio.c +++ b/net/rfkill/rfkill-gpio.c @@ -105,7 +105,7 @@ static int rfkill_gpio_probe(struct platform_device *pdev) ret = pdata->gpio_runtime_setup(pdev); if (ret) { pr_warn("%s: can't set up gpio\n", __func__); - return ret; + goto fail_alloc; } } |