diff options
| author | Peter Senna Tschudin <peter.senna@gmail.com> | 2012-10-30 11:09:41 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-12-21 17:43:22 -0200 |
| commit | 37e310edf3f6090eb118b7fcafd00221c290ac6b (patch) | |
| tree | a2901516ae5c37bdd130b42690b55166b9c3072a /drivers/media/pci/saa7134 | |
| parent | 832fbb5aec6ec877ed9273a0b20520e3dc0b23b3 (diff) | |
[media] drivers/media/pci/saa7134/saa7134-dvb.c: Test if videobuf_dvb_get_frontend return NULL
Based on commit: e66131cee501ee720b7b58a4b87073b8fbaaaba6
Not testing videobuf_dvb_get_frontend output may cause OOPS if it return
NULL. This patch fixes this issue.
The semantic patch that found this issue is(http://coccinelle.lip6.fr/):
// <smpl>
@@
identifier i,a,b;
statement S, S2;
@@
i = videobuf_dvb_get_frontend(...);
... when != if (!i) S
* if (i->a.b)
S2
// </smpl>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/pci/saa7134')
| -rw-r--r-- | drivers/media/pci/saa7134/saa7134-dvb.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/pci/saa7134/saa7134-dvb.c b/drivers/media/pci/saa7134/saa7134-dvb.c index b209de40a4f8..27915e501db9 100644 --- a/drivers/media/pci/saa7134/saa7134-dvb.c +++ b/drivers/media/pci/saa7134/saa7134-dvb.c @@ -607,6 +607,9 @@ static int configure_tda827x_fe(struct saa7134_dev *dev, /* Get the first frontend */ fe0 = videobuf_dvb_get_frontend(&dev->frontends, 1); + if (!fe0) + return -EINVAL; + fe0->dvb.frontend = dvb_attach(tda10046_attach, cdec_conf, &dev->i2c_adap); if (fe0->dvb.frontend) { if (cdec_conf->i2c_gate) |