--- zzzz-none-000/linux-3.10.107/drivers/media/dvb-frontends/stb6000.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/media/dvb-frontends/stb6000.h 2021-02-04 17:41:59.000000000 +0000 @@ -35,7 +35,7 @@ * @param i2c i2c adapter to use. * @return FE pointer on success, NULL on failure. */ -#if IS_ENABLED(CONFIG_DVB_STB6000) +#if IS_REACHABLE(CONFIG_DVB_STB6000) extern struct dvb_frontend *stb6000_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c); #else