diff options
| author | Julia Lawall <julia@diku.dk> | 2011-12-23 18:39:30 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2012-01-04 15:52:42 -0800 |
| commit | 30a0dee7806d099c709603e65aa08be0363ea49d (patch) | |
| tree | 4e69890a6d5b7df034efecd773cf212aa078f679 /drivers/usb | |
| parent | 3c8c9316710b83e906e425024153bf0929887b59 (diff) | |
| download | linux-30a0dee7806d099c709603e65aa08be0363ea49d.tar.bz2 | |
drivers/usb/host/isp1760-if.c: introduce missing kfree
drvdata needds to be freed before leaving the function in an error case.
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: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/host/isp1760-if.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c index b605224fb9e3..61de62cdb1dd 100644 --- a/drivers/usb/host/isp1760-if.c +++ b/drivers/usb/host/isp1760-if.c @@ -56,14 +56,18 @@ static int of_isp1760_probe(struct platform_device *dev) return -ENOMEM; ret = of_address_to_resource(dp, 0, &memory); - if (ret) - return -ENXIO; + if (ret) { + ret = -ENXIO; + goto free_data; + } res_len = resource_size(&memory); res = request_mem_region(memory.start, res_len, dev_name(&dev->dev)); - if (!res) - return -EBUSY; + if (!res) { + ret = -EBUSY; + goto free_data; + } if (of_irq_map_one(dp, 0, &oirq)) { ret = -ENODEV; @@ -125,6 +129,7 @@ free_gpio: gpio_free(drvdata->rst_gpio); release_reg: release_mem_region(memory.start, res_len); +free_data: kfree(drvdata); return ret; } |