[media] cx24120: do not allow an invalid delivery system types

cx24120_set_frontend currently allows invalid delivery system types
other than SYS_DVBS2 and SYS_DVBS.  Fix this by returning -EINVAL
for invalid values.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jemma Denson <jdenson@gmail.com>

diff --git a/drivers/media/dvb-frontends/cx24120.c b/drivers/media/dvb-frontends/cx24120.c
index 066ee38..3112a32 100644 (file)
--- a/drivers/media/dvb-frontends/cx24120.c
+++ b/drivers/media/dvb-frontends/cx24120.c
@@ -1154,8 +1154,7 @@ static int cx24120_set_frontend(struct dvb_frontend *fe)
                dev_dbg(&state->i2c->dev,
                        "delivery system(%d) not supported\n",
                        c->delivery_system);
-               ret = -EINVAL;
-               break;
+               return -EINVAL;
        }
 
        state->dnxt.delsys = c->delivery_system;