1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/cx24123.h b/drivers/media/dvb/frontends/cx24123.h
index 9606f825935c..57a1dae1dc40 100644
--- a/drivers/media/dvb/frontends/cx24123.h
+++ b/drivers/media/dvb/frontends/cx24123.h
@@ -30,9 +30,21 @@ struct cx24123_config
 
         /* Need to set device param for start_dma */
         int (*set_ts_params)(struct dvb_frontend* fe, int is_punctured);
+
+        /* 0 = LNB voltage normal, 1 = LNB voltage inverted */
+        int lnb_polarity;
 };
 
+#if defined(CONFIG_DVB_CX24123) || defined(CONFIG_DVB_CX24123_MODULE)
 extern struct dvb_frontend* cx24123_attach(const struct cx24123_config* config,
                                            struct i2c_adapter* i2c);
+#else
+static inline struct dvb_frontend* cx24123_attach(const struct cx24123_config* config,
+                                                  struct i2c_adapter* i2c)
+{
+        printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+        return NULL;
+}
+#endif // CONFIG_DVB_CX24123
 
 #endif /* CX24123_H */