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authorAntti Palosaari <crope@iki.fi>2012-01-15 18:30:36 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-01-16 12:55:47 -0200
commit3b6a567afa3250abf280ef535000dc0dc3ed9d52 (patch)
tree05869bf6676761d97f0d6f698b0695dab0a4ac00 /drivers/media
parent1f64972937d84f48a8b4d16e7e0b4a5ee7904c96 (diff)
[media] cxd2820r: do not allow get_frontend() when demod is not initialized
This fixes bug introduced by multi-frontend to single-frontend change. Finally HAS_LOCK is got back! We are not allowed to access hardware in sleep mode... Chip did not like when .get_frontend() reads some registers while chip was sleeping and due to that HAS_LOCK bit was never gained. TODO: We should add logic for dvb-core to drop out illegal calls like that. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/dvb/frontends/cxd2820r_core.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/media/dvb/frontends/cxd2820r_core.c b/drivers/media/dvb/frontends/cxd2820r_core.c
index 372a4e70025..caae7f79c83 100644
--- a/drivers/media/dvb/frontends/cxd2820r_core.c
+++ b/drivers/media/dvb/frontends/cxd2820r_core.c
@@ -309,9 +309,14 @@ static int cxd2820r_read_status(struct dvb_frontend *fe, fe_status_t *status)
static int cxd2820r_get_frontend(struct dvb_frontend *fe)
{
+ struct cxd2820r_priv *priv = fe->demodulator_priv;
int ret;
dbg("%s: delsys=%d", __func__, fe->dtv_property_cache.delivery_system);
+
+ if (priv->delivery_system == SYS_UNDEFINED)
+ return 0;
+
switch (fe->dtv_property_cache.delivery_system) {
case SYS_DVBT:
ret = cxd2820r_get_frontend_t(fe);