return -1; 
goto error; 
int dst_command(struct dst_state *state, u8 *data, u8 len){	u8 reply;	if ((dst_comm_init(state)) < 0) {		dprintk(verbose, DST_NOTICE, 1, "DST Communication Initialization Failed.");		return -1;	}	if (write_dst(state, data, len)) {		dprintk(verbose, DST_INFO, 1, "Tring to recover.. ");		if ((dst_error_recovery(state)) < 0) {			dprintk(verbose, DST_ERROR, 1, "Recovery Failed.");			return -1;		}		return -1;	}	if ((dst_pio_disable(state)) < 0) {		dprintk(verbose, DST_ERROR, 1, "PIO Disable Failed.");		return -1;	}	if (state->type_flags & DST_TYPE_HAS_FW_1)		udelay(3000);	if (read_dst(state, &reply, GET_ACK)) {		dprintk(verbose, DST_DEBUG, 1, "Trying to recover.. ");		if ((dst_error_recovery(state)) < 0) {			dprintk(verbose, DST_INFO, 1, "Recovery Failed.");			return -1;		}		return -1;	}	if (reply != ACK) {		dprintk(verbose, DST_INFO, 1, "write not acknowledged 0x%02x ", reply);		return -1;	}	if (len >= 2 && data[0] == 0 && (data[1] == 1 || data[1] == 3))		return 0;	if (state->type_flags & DST_TYPE_HAS_FW_1)		udelay(3000);	else		udelay(2000);	if (!dst_wait_dst_ready(state, NO_DELAY))		return -1;	if (read_dst(state, state->rxbuffer, FIXED_COMM)) {		dprintk(verbose, DST_DEBUG, 1, "Trying to recover.. ");		if ((dst_error_recovery(state)) < 0) {			dprintk(verbose, DST_INFO, 1, "Recovery failed.");			return -1;		}		return -1;	}	if (state->rxbuffer[7] != dst_check_sum(state->rxbuffer, 7)) {		dprintk(verbose, DST_INFO, 1, "checksum failure");		return -1;	}	return 0;}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/d28d57629ffcd30e11a6085e15ee1327fea60b60/dst.c/clean/drivers/media/dvb/bt8xx/dst.c