diff options
Diffstat (limited to 'linux/drivers')
| -rw-r--r-- | linux/drivers/media/video/tuner-simple.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/linux/drivers/media/video/tuner-simple.c b/linux/drivers/media/video/tuner-simple.c index 5c82e73c6..3a1c951b7 100644 --- a/linux/drivers/media/video/tuner-simple.c +++ b/linux/drivers/media/video/tuner-simple.c @@ -163,7 +163,12 @@ static inline int tuner_mode(const int status) static int simple_get_status(struct dvb_frontend *fe, u32 *status) { struct tuner_simple_priv *priv = fe->tuner_priv; - int tuner_status = tuner_read_status(fe); + int tuner_status; + + if (priv->i2c_props.adap == NULL) + return -EINVAL; + + tuner_status = tuner_read_status(fe); *status = 0; @@ -180,7 +185,12 @@ static int simple_get_status(struct dvb_frontend *fe, u32 *status) static int simple_get_rf_strength(struct dvb_frontend *fe, u16 *strength) { struct tuner_simple_priv *priv = fe->tuner_priv; - int signal = tuner_signal(tuner_read_status(fe)); + int signal; + + if (priv->i2c_props.adap == NULL) + return -EINVAL; + + signal = tuner_signal(tuner_read_status(fe)); *strength = signal; @@ -712,6 +722,9 @@ static int simple_set_params(struct dvb_frontend *fe, struct tuner_simple_priv *priv = fe->tuner_priv; int ret = -EINVAL; + if (priv->i2c_props.adap == NULL) + return -EINVAL; + switch (params->mode) { case V4L2_TUNER_RADIO: ret = simple_set_radio_freq(fe, params); |