--- zzzz-none-000/linux-3.10.107/drivers/media/dvb-frontends/zl10036.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/media/dvb-frontends/zl10036.h 2021-02-04 17:41:59.000000000 +0000 @@ -38,7 +38,7 @@ int rf_loop_enable; }; -#if IS_ENABLED(CONFIG_DVB_ZL10036) +#if IS_REACHABLE(CONFIG_DVB_ZL10036) extern struct dvb_frontend *zl10036_attach(struct dvb_frontend *fe, const struct zl10036_config *config, struct i2c_adapter *i2c); #else