From 3cc68cf094c1c59eb7191345b490d17ef76c9a5a Mon Sep 17 00:00:00 2001 From: Michael Krufky Date: Thu, 22 Nov 2007 12:40:25 -0500 Subject: tda827x: prevent possible NULL pointer dereference in tda827xa_lna_gain From: Michael Krufky If tda827x_config hasn't been defined, exit the function. Signed-off-by: Michael Krufky --- linux/drivers/media/dvb/frontends/tda827x.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'linux') 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"); -- cgit v1.2.3