--- zzzz-none-000/linux-3.10.107/drivers/media/dvb-frontends/or51211.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/media/dvb-frontends/or51211.h 2021-02-04 17:41:59.000000000 +0000 @@ -37,7 +37,7 @@ void (*sleep)(struct dvb_frontend * fe); }; -#if IS_ENABLED(CONFIG_DVB_OR51211) +#if IS_REACHABLE(CONFIG_DVB_OR51211) extern struct dvb_frontend* or51211_attach(const struct or51211_config* config, struct i2c_adapter* i2c); #else