diff options
| author | Michael Krufky <mkrufky@linuxtv.org> | 2007-11-22 14:40:25 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-25 19:02:17 -0200 |
| commit | 255c1887ccca6cde4a2eac231623b925bf621540 (patch) | |
| tree | 09cf5dbf4431a85347b0e28a872b989c362b47be | |
| parent | 3b0c453aa78be253b4414cd337c9975f91e2c894 (diff) | |
V4L/DVB (6622): tda827x: prevent possible NULL pointer dereference in tda827xa_lna_gain
If tda827x_config hasn't been defined, exit the function.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
| -rw-r--r-- | drivers/media/dvb/frontends/tda827x.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/tda827x.c b/drivers/media/dvb/frontends/tda827x.c index 50adfb5395e..229b11987a5 100644 --- a/drivers/media/dvb/frontends/tda827x.c +++ b/drivers/media/dvb/frontends/tda827x.c @@ -556,6 +556,11 @@ static void tda827xa_lna_gain(struct dvb_frontend *fe, int high, struct i2c_msg msg = { .addr = priv->i2c_addr, .flags = 0, .buf = buf, .len = sizeof(buf) }; + if (NULL == priv->cfg) { + dprintk("tda827x_config not defined, cannot set LNA gain!\n"); + return; + } + if (priv->cfg->config) { if (high) dprintk("setting LNA to high gain\n"); |