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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>
This commit is contained in:
Michael Krufky 2007-11-22 14:40:25 -03:00 committed by Mauro Carvalho Chehab
parent 3b0c453aa7
commit 255c1887cc
1 changed files with 5 additions and 0 deletions
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5
drivers/media/dvb/frontends/tda827x.c
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@ -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");