diff options
author | Julia Lawall <julia@diku.dk> | 2009-09-11 18:22:27 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-15 12:02:34 -0700 |
commit | 2bb6a12a88aeac9bab4ed0cf0da1edc03f5eb686 (patch) | |
tree | 7d81f9c9d2208af2df80c7fe2d5241c757d40a3f /drivers/staging/dream/camera/msm_v4l2.c | |
parent | a2279ae5b58edb7cbe2196d08572fcf59f292354 (diff) |
Staging: dream: introduce missing kfree
Error handling code following a kmalloc or kzalloc 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,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,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>
Diffstat (limited to 'drivers/staging/dream/camera/msm_v4l2.c')
-rw-r--r-- | drivers/staging/dream/camera/msm_v4l2.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/staging/dream/camera/msm_v4l2.c b/drivers/staging/dream/camera/msm_v4l2.c index 46a6eb1cf53..6a7d46cf11e 100644 --- a/drivers/staging/dream/camera/msm_v4l2.c +++ b/drivers/staging/dream/camera/msm_v4l2.c @@ -521,13 +521,17 @@ static int msm_v4l2_s_fmt_cap(struct file *f, ctrlcmd->value = pfmt; ctrlcmd->timeout_ms = 10000; - if (pfmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) + if (pfmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) { + kfree(ctrlcmd); return -1; + } #if 0 /* FIXEME */ - if (pfmt->fmt.pix.pixelformat != V4L2_PIX_FMT_YVU420) + if (pfmt->fmt.pix.pixelformat != V4L2_PIX_FMT_YVU420) { + kfree(ctrlcmd); return -EINVAL; + } #endif /* Ok, but check other params, too. */ |