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| author | Michael Krufky <mkrufky@linuxtv.org> | 2007-11-22 12:40:25 -0500 |
|---|---|---|
| committer | Michael Krufky <mkrufky@linuxtv.org> | 2007-11-22 12:40:25 -0500 |
| commit | 3cc68cf094c1c59eb7191345b490d17ef76c9a5a (patch) | |
| tree | dcff6a64602bad66e1f26d7308567a004c668db4 | |
| parent | 1dc42bce5c6a929a75e3205bacc1da3dfebb4429 (diff) | |
| download | mediapointer-dvb-s2-3cc68cf094c1c59eb7191345b490d17ef76c9a5a.tar.gz mediapointer-dvb-s2-3cc68cf094c1c59eb7191345b490d17ef76c9a5a.tar.bz2 | |
tda827x: prevent possible NULL pointer dereference in tda827xa_lna_gain
From: Michael Krufky <mkrufky@linuxtv.org>
If tda827x_config hasn't been defined, exit the function.
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
| -rw-r--r-- | linux/drivers/media/dvb/frontends/tda827x.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/linux/drivers/media/dvb/frontends/tda827x.c b/linux/drivers/media/dvb/frontends/tda827x.c index 8ec49718b..ed1502252 100644 --- a/linux/drivers/media/dvb/frontends/tda827x.c +++ b/linux/drivers/media/dvb/frontends/tda827x.c @@ -557,6 +557,11 @@ 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"); |