V4L/DVB (13977): [STV090x] Test for valid frequency before starting to tune
Signed-off-by: Andreas Regel <andreas.regel@gmx.de>
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/frontends/stv090x.c b/drivers/media/dvb/frontends/stv090x.c
index e903334..3bdbce2 100644
--- a/drivers/media/dvb/frontends/stv090x.c
+++ b/drivers/media/dvb/frontends/stv090x.c
@@ -3393,6 +3393,9 @@
struct stv090x_state *state = fe->demodulator_priv;
struct dtv_frontend_properties *props = &fe->dtv_property_cache;
+ if (p->frequency == 0)
+ return DVBFE_ALGO_SEARCH_INVALID;
+
state->delsys = props->delivery_system;
state->frequency = p->frequency;
state->srate = p->u.qpsk.symbol_rate;