 return 0; 
static int av7110_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone){	struct av7110* av7110 = (struct av7110*) fe->dvb->priv;	switch (tone) {	case SEC_TONE_ON:		Set22K(av7110, 1);		break;	case SEC_TONE_OFF:		Set22K(av7110, 0);		break;	default:		return -EINVAL;	}	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/ce18a223607b0e8cc9a8375abc64281a13ac423c/av7110.c/clean/drivers/media/dvb/ttpci/av7110.c