static int dst_set_tone(struct dvb_frontend* fe, fe_sec_tone_mode_t tone){	u8 *val;	struct dst_state* state = (struct dst_state*) fe->demodulator_priv;	state->tone = tone;	if (state->dst_type == DST_TYPE_IS_TERR)		return 0;	val = &state->tx_tuna[0];	val[8] &= ~0x1;	switch (tone) {	case SEC_TONE_OFF:		break;	case SEC_TONE_ON:		val[8] |= 1;		break;	default:		return -EINVAL;	}	dst_tone_power_cmd(state);	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/50b215a05878ce9636dace6cd21f7e91ff005058/dst.c/clean/drivers/media/dvb/bt8xx/dst.c