V4L/DVB (13105): dvb-usb: add fe_ioctl_override callback to dvb_usb_adapter_properties

Allow dvb-usb adapter drivers to specify a fe_ioctl_override callback
to enable device-specific handling of DVB frontend operations.
Signed-off-by: NMichael Krufky <mkrufky@kernellabs.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/dvb-usb/dvb-usb-dvb.c

@@ -88,6 +88,7 @@ int dvb_usb_adapter_dvb_init(struct dvb_usb_adapter *adap, short *adapter_nums)
 		goto err;
 	}
 	adap->dvb_adap.priv = adap;
+	adap->dvb_adap.fe_ioctl_override = adap->props.fe_ioctl_override;
 
 	if (adap->dev->props.read_mac_address) {
 		if (adap->dev->props.read_mac_address(adap->dev,adap->dvb_adap.proposed_mac) == 0)

drivers/media/dvb/dvb-usb/dvb-usb.h

@@ -162,6 +162,9 @@ struct dvb_usb_adapter_properties {
 	struct usb_data_stream_properties stream;
 
 	int size_of_priv;
+
+	int (*fe_ioctl_override) (struct dvb_frontend *,
+				  unsigned int, void *, unsigned int);
 };
 
 /**