--- v4l-dvb.orig/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
+++ v4l-dvb/linux/drivers/media/dvb/dvb-core/dvb_frontend.c
@@ -584,6 +584,7 @@ restart:
 
 				if (fepriv->state & FESTATE_RETUNE) {
 					dprintk("%s: Retune requested, FESTATE_RETUNE\n", __func__);
+					params = &fepriv->parameters;
 					fepriv->state = FESTATE_TUNED;
 				}