diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/rtl28xxu.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c index 0d37d0c06d79..1f29307b9d72 100644 --- a/drivers/media/usb/dvb-usb-v2/rtl28xxu.c +++ b/drivers/media/usb/dvb-usb-v2/rtl28xxu.c @@ -740,8 +740,23 @@ static int rtl2832u_tuner_callback(struct dvb_usb_device *d, int cmd, int arg) static int rtl2832u_frontend_callback(void *adapter_priv, int component, int cmd, int arg) { - struct i2c_adapter *adap = adapter_priv; - struct dvb_usb_device *d = i2c_get_adapdata(adap); + struct i2c_adapter *adapter = adapter_priv; + struct device *parent = adapter->dev.parent; + struct i2c_adapter *parent_adapter; + struct dvb_usb_device *d; + + /* + * All tuners are connected to demod muxed I2C adapter. We have to + * resolve its parent adapter in order to get handle for this driver + * private data. That is a bit hackish solution, GPIO or direct driver + * callback would be better... + */ + if (parent != NULL && parent->type == &i2c_adapter_type) + parent_adapter = to_i2c_adapter(parent); + else + return -EINVAL; + + d = i2c_get_adapdata(parent_adapter); dev_dbg(&d->udev->dev, "%s: component=%d cmd=%d arg=%d\n", __func__, component, cmd, arg); |
