Commit 255c1887 authored by Michael Krufky's avatar Michael Krufky Committed by Mauro Carvalho Chehab
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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: default avatarMichael Krufky <mkrufky@linuxtv.org>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 3b0c453a

drivers/media/dvb/frontends/tda827x.c

+5 −0
Original line number Diff line number Diff line
@@ -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");