--- zzzz-none-000/linux-3.10.107/drivers/media/dvb-frontends/zl10353.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/media/dvb-frontends/zl10353.h 2021-02-04 17:41:59.000000000 +0000 @@ -47,7 +47,7 @@ u8 pll_0; /* default: 0x15 */ }; -#if IS_ENABLED(CONFIG_DVB_ZL10353) +#if IS_REACHABLE(CONFIG_DVB_ZL10353) extern struct dvb_frontend* zl10353_attach(const struct zl10353_config *config, struct i2c_adapter *i2c); #else