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| author | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-28 16:02:07 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-30 19:33:06 +0300 |
| commit | 5a4faee2d01b615011ceb65c656250e4e6a274ee (patch) | |
| tree | bba63236f40fe0ec67f8996c119bfc47d36e2b06 /drivers/media/pci/ngene | |
| parent | f8781a08200c07f5e571b2db0929af615fe28f67 (diff) | |
| download | linux-5a4faee2d01b615011ceb65c656250e4e6a274ee.tar.xz | |
[media] ngene: preventing dereferencing a NULL pointer
As reported by smatch:
drivers/media/pci/ngene/ngene-core.c:1529 init_channel() error: we previously assumed 'chan->fe' could be null (see line 1521)
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/pci/ngene')
| -rw-r--r-- | drivers/media/pci/ngene/ngene-core.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/media/pci/ngene/ngene-core.c b/drivers/media/pci/ngene/ngene-core.c index e29bc3af4baf..1b92d836a564 100644 --- a/drivers/media/pci/ngene/ngene-core.c +++ b/drivers/media/pci/ngene/ngene-core.c @@ -1526,10 +1526,12 @@ static int init_channel(struct ngene_channel *chan) if (chan->fe2) { if (dvb_register_frontend(adapter, chan->fe2) < 0) goto err; - chan->fe2->tuner_priv = chan->fe->tuner_priv; - memcpy(&chan->fe2->ops.tuner_ops, - &chan->fe->ops.tuner_ops, - sizeof(struct dvb_tuner_ops)); + if (chan->fe) { + chan->fe2->tuner_priv = chan->fe->tuner_priv; + memcpy(&chan->fe2->ops.tuner_ops, + &chan->fe->ops.tuner_ops, + sizeof(struct dvb_tuner_ops)); + } } if (chan->has_demux) { |