--- zzzz-none-000/linux-3.10.107/drivers/media/dvb-frontends/af9013.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/media/dvb-frontends/af9013.h 2021-02-04 17:41:59.000000000 +0000 @@ -103,7 +103,7 @@ u8 gpio[4]; }; -#if IS_ENABLED(CONFIG_DVB_AF9013) +#if IS_REACHABLE(CONFIG_DVB_AF9013) extern struct dvb_frontend *af9013_attach(const struct af9013_config *config, struct i2c_adapter *i2c); #else