int (*request_firmware)(struct dvb_frontend* fe, const struct firmware **fw, char* name);
};
-#if IS_ENABLED(CONFIG_DVB_SP887X)
+#if IS_REACHABLE(CONFIG_DVB_SP887X)
extern struct dvb_frontend* sp887x_attach(const struct sp887x_config* config,
struct i2c_adapter* i2c);
#else