if (tmp) tmp = 255 - tmp; 
tmp = 255 - tmp; 
static int tda1004x_read_snr(struct dvb_frontend* fe, u16 * snr){	struct tda1004x_state* state = fe->demodulator_priv;	int tmp;	dprintk("%s\n", __FUNCTION__);	// read it	tmp = tda1004x_read_byte(state, TDA1004X_SNR);	if (tmp < 0)		return -EIO;	if (tmp)		tmp = 255 - tmp;	*snr = ((tmp << 8) | tmp);	dprintk("%s: snr=0x%x\n", __FUNCTION__, *snr);	return 0;}
10457	/local/tlutelli/issta_data/temp/c/2005_temp/2005/10457/c2026b3af0c8ad33ef253a950c271f2d0da111b6/tda1004x.c/buggy/drivers/media/dvb/frontends/tda1004x.c